Ideal weight calculator

Ideal weight calculator DEFAULT

Ideal Weight Calculator

If you are really concerned about your health or your looks and want to know how much you should weigh, this ideal weight calculator is the tool for you. It will help you determine your ideal body weight based on your height and sex. Read on to learn the different formulas for calculating your IBW (ideal body weight) and how to interpret the results. We will also explain how to use the healthy weight chart, which is based on BMI.

How much should I weight?

There many many ways to estimate somebodies ideal weight. Truth be told, none of them is perfectly accurate, as there are a lot of factors influencing it. For example, for people with a lot of muscle mass (and high lean body mass), their ideal weight will tend to be more than indicated by the results they obtain.

Our ideal body weight calculator uses four different formulas to find your ideal weight, as well as giving you your BMI . While the four formulas listed below give you only one number that you should be aiming for, BMI gives you a certain weight range you should be in.

For men, the ideal weight calculator uses the following equations:

  • Robinson formula:
  • Miller formula:
  • Hamwi formula:
  • Devine formula:

For women, the ideal weight calculator uses the following equations:

  • Robinson formula:
  • Miller formula:
  • Hamwi formula:
  • Devine formula:
💡 Ideal weight is used to compute dosing of different medicines, e.g., immunoglobulins.

Height weight chart and BMI

The last indicator of an individuals ideal weight is BMI, short for Body Mass Index. It is calculated according to . The optimal, healthy range for BMI is between 18.5 and 24.9. Our ideal weight calculator converts this back into weight, presenting to you the range of appropriate weights for your height.

You can also take a look at a height-weight chart that shows the ranges of underweight, normal and overweight for various heights:

height weight chart

Limitations of our IBW calculator

Remember that the values found with our ideal body weight calculator are not one hundred percent valid for all. As long as you are in the BMI normal weight range, you are fine - don't go on a strict diet just to reach that specific number!

Also, our IBW calculator is valid for adults only. Don't use it to find the proper weight range of kids - consult a specialist instead. Also, don't use it if you are pregnant. Use pregnancy weight gain calculator instead!


How to calculate ideal body weight in pounds?

To calculate your ideal body weight in pounds, you can use a modified Devine formula.

For men: 110.23 lb + 5.1 lb per every inch over 5 feet For women: 100.3 lb + 5.1 lb per every inch over 5 feet

Which ideal body weight formula is the best?

The most validated, primarily by medicine, ideal body weight formula is the Devine formula. Physicians use this formula to calculate the doses of certain drugs, such as levothyroxine or immunoglobulins. Other formulas don’t differ that much from the Devine formula, and they were mainly designed trying to improve the original formula.

What is the ideal weight for a female?

To determine the ideal body weight for a female, you can use the Devine formula.

In kilograms: 45.5 kg + 2.3 kg per every inch over 5 feet

In pounds: 100.3 lb + 5.1 lb per every inch over 5 feet

For example, for a 5 ft 4-inch female, the ideal weight is 55 kg (121.25 lb).

Remember - that this is only an estimation. There is no one universal weight for every woman your height, and this formula is not to tell you if you should lose or gain weight. If you have concerns about your current body weight, talk to your physician.

What is the ideal weight loss for a month?

If you want to lose weight, you would probably love to do it as quickly as possible. But think a minute - you didn’t gain those extra pounds overnight, and the same way, they won’t go away overnight.

Doctors say the safe weight loss pace is around 0.25-0.5 kg (0.55-1.1 lb) per week. That means ideally, you should lose no more than 1-2 kg (2.2-4.4 lb) per month.

It might sound discouraging. But a slow, steady weight loss pace is the best way to lose weight without stress - and lose it permanently. Because you wouldn’t like the pound to get back to you, would you?

How do you calculate your ideal body weight?

To calculate your ideal body weight, you can use the Devine formula.

Devine formula for man: 50.0 kg + 2.3 kg per every inch over 5 feet

Devine formula for women: 45.5 kg + 2.3 kg per every inch over 5 feet

The Devine formula only requires your height. There are more ideal body weight formulas, but the Devine one is the most popular and the most validated.


Adult BMI Calculator

Please check the accuracy of the information you entered:



For the information you entered:



Your BMI is  , indicating your weight is in the   category for adults of your height.

For your height, a healthy weight range would be from   to   pounds.

Talk with your healthcare provider to determine possible causes of underweight and if you need to gain weight.

For the information you entered:



Your BMI is  , indicating your weight is in the   category for adults of your height.

For your height, a healthy weight range would be from   to   pounds.

Maintaining a healthy weight may reduce the risk of chronic diseases associated with overweight and obesity.

For information about the importance of a healthy diet and physical activity in maintaining a healthy weight, visit Preventing Weight Gain.

For the information you entered:



Your BMI is  , indicating your weight is in the   category for adults of your height.

For your height, a healthy weight range would be from   to   pounds.

People who are overweight or obese are at higher risk for chronic conditions such as high blood pressure, diabetes, and high cholesterol.

For the information you entered:



Your BMI is  , indicating your weight is in the   category for adults of your height.

For your height, a healthy weight range would be from   to   pounds.

People who are overweight or obese are at higher risk for chronic conditions such as high blood pressure, diabetes, and high cholesterol.

Anyone who is overweight should try to avoid gaining additional weight. Additionally, if you are overweight with other risk factors (such as high LDL cholesterol, low HDL cholesterol, or high blood pressure), you should try to lose weight. Even modest weight loss may help lower the risk of disease. Talk with your healthcare provider to determine appropriate ways to lose weight.

For information about the importance of a healthy diet and physical activity in reaching a healthy weight, visit Healthy Weight.

BMIWeight Status
Below 18.5Underweight
30.0 and AboveObese
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How much should I weigh for my height and age?

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Many people want to know the answer to this question: How much should I weigh? However, there is not one ideal healthy weight for each person, because a number of different factors play a role.

These include age, muscle-fat ratio, height, sex, and body fat distribution, or body shape.

Having excess weight can affect a person’s risk of developing a number of health conditions, including obesity, type 2 diabetes, high blood pressure, and cardiovascular problems.

Not everyone who carries extra weight develops health problems. However, believe that while these extra pounds might not currently impact a person’ s health, a lack of management could lead to problems in the future.

Read on to find out about four ways of working out your ideal weight.

Method 1: Body mass index (BMI)

Body mass index (BMI) is a common tool for deciding whether a person has an appropriate body weight. It measures a person’s weight in relation to their height.

According to the :

  • A BMI of less than 18.5 means that a person is underweight.
  • A BMI of between 18.5 and 24.9 is ideal.
  • A BMI of between 25 and 29.9 is overweight.
  • A BMI over 30 indicates obesity.

Body mass index calculator

To calculate your BMI, you can use our BMI calculators or review our charts below.

Weight and height guide chart

The following weight and height chart uses BMI tables from the to determine how much a person’s weight should be for their height.

NormalOverweightObesitySevere obesity
4ft 10″
91 to 115 lbs.119 to 138 lbs.143 to 186 lbs.191 to 258 lbs.
4ft 11″
94 to 119 lbs.124 to 143 lbs.148 to 193 lbs.198 to 267 lbs.
97 to 123 lbs.128 to 148 lbs.153 to 199 lbs.204 to 276 lbs.
5ft 1″
100 to 127 lbs.132 to 153 lbs.158 to 206 lbs.211 to 285 lbs.
5ft 2″
104 to 131 lbs.136 to 158 lbs.164 to 213 lbs.218 to 295 lbs.
5ft 3″
107 to 135 lbs.141 to 163 lbs.169 to 220 lbs.225 to 304 lbs.
5ft 4″
110 to 140 lbs.145 to 169 lbs.174 to 227 lbs.232 to 314 lbs.
5ft 5″
114 to 144 lbs.150 to 174 lbs.180 to 234 lbs.240 to 324 lbs.
5ft 6″
118 to 148 lbs.155 to 179 lbs.186 to 241 lbs.247 to 334 lbs.
5ft 7″
121 to 153 lbs.159 to 185 lbs.191 to 249 lbs.255 to 344 lbs.
5ft 8″
125 to 158 lbs.164 to 190 lbs.197 to 256 lbs.262 to 354 lbs.
5ft 9″
128 to 162 lbs.169 to 196 lbs.203 to 263 lbs.270 to 365 lbs.
5ft 10″
132 to 167 lbs.174 to 202 lbs.209 to 271 lbs.278 to 376 lbs.
5ft 11″
136 to 172 lbs.179 to 208 lbs.215 to 279 lbs.286 to 386 lbs.
140 to 177 lbs.184 to 213 lbs.221 to 287 lbs.294 to 397 lbs.
6ft 1″
144 to 182 lbs.189 to 219 lbs.227 to 295 lbs.302 to 408 lbs.
6ft 2″
148 to 186 lbs.194 to 225 lbs.233 to 303 lbs.311 to 420 lbs.
6ft 3″
152 to 192 lbs.200 to 232 lbs.240 to 311 lbs.319 to 431 lbs.
6ft 4″
156 to 197 lbs.205 to 238 lbs.246 to 320 lbs.328 to 443 lbs.
BMI19 to 2425 to 2930 to 3940 to 54

What is the problem with BMI?

BMI is a very simple measurement. While it takes height into consideration, it does not account for factors such as:

  • waist or hip measurements
  • proportion or distribution of fat
  • proportion of muscle mass

These, too, can have an impact on health.

High-performance athletes, for example, tend to be very fit and have little body fat. They can have a high BMI because they have more muscle mass, but this does not mean they are overweight.

BMI can also offer a rough idea of whether or not a person’s weight is healthy, and it is useful for measuring trends in population studies.

However, it should not be the only measure for an individual to assess whether their weight is ideal or not.

Method 2: Waist-to-hip ratio (WHR)

A person’s waist-to-hip measurement compares their waist size with that of their hips.

Research has shown that people who have more body fat around their middle are more likely to develop cardiovascular disease (CVD) and diabetes.

The higher the waist measurement in proportion to the hips, the greater the risk.

For this reason, the waist-to-hip ratio (WHR) is a useful tool for calculating whether a person has a healthy weight and size.

Measure your waist-to-hip ratio

1. Measure around the waist in the narrowest part, usually just above the belly button.

2. Divide this measurement by the measurement around your hip at its widest part.

If a person’s waist is 28 inches and their hips are 36 inches, they will divide 28 by 36. This will give them 0.77.

What does it mean?

How WHR affects the risk of cardiovascular disease (CVD) is different for men and women, because they tend to have different body shapes.

Evidence suggests that WHR the risk of CVD as follows:

In males

  • Below 0.9: The risk of cardiovascular health problems is low.
  • From 0.9 to 0.99: The risk is moderate.
  • At 1.0 or over: The risk is high.

In females

  • Below 0.8: The risk is low.
  • From 0.8 to 0.89: The risk is moderate.
  • At 0.9 or above: The risk is high.

However, these figures , depending on the source and the population to which they apply.

WHR may be a better predictor of heart attacks and other health risks than BMI, which does not take fat distribution into consideration.

A study of health records for in 11 countries, published in 2013, showed that those with a higher WHR also have a greater risk of medical and surgical complications relating to colorectal surgery.

However, WHR does not accurately measure a person’s total body fat percentage, or their muscle-to-fat ratio.

Method 3: Waist-to-height ratio

Waist-to-height ratio (WtHR) is another tool that might predict the risk of heart disease, diabetes, and overall mortality more effectively than BMI.

A person whose waist measurement is less than half their height has a lower risk of a number of life-threatening health complications.

Measure your waist-to-height ratio

To calculate the WtHR, a person should divide their waist size by their height. If the answer is 0.5 or less, the chances are that they have a healthy weight.

  • A woman who is 5 feet and 4 inches tall (163 cm), should have a waist measurement below 32 inches (81 cm).
  • A man who is 6 feet or 183 centimeters (cm) tall, should have a waist measurement below 36 inches or 91 cm.

These measurements will give a WtHR of just under 0.5.

In a published in 2014 in Plos One, researchers concluded that WtHR was a better predictor of mortality than BMI.

The authors also cited findings from another study — involving statistics for around 300,000 people from different ethnic groups — which concluded that WHtR is better than BMI at predicting heart attacks, strokes, diabetes, and hypertension.

This suggests that the WHtR could be a useful screening tool.

Measurements that take waist size into account can be good indicators of a person’s health risks because fat that collects around the middle can be harmful for the heart, kidneys, and liver.

The note that a man with a waist size of 40 inches or above, or a woman with a waist size of 35 inches or above has a higher risk than other people of:

This does not, however, take a person’s height or hip size into consideration.

Method 4: Body fat percentage

Body fat percentage is the weight of a person’s fat divided by their total weight.

Total body fat includes essential and storage fat.

Essential fat: A person needs essential fat to survive. It plays a role in a wide range of bodily functions. For men, it is healthy to have 2 to 4 percent of their body composition as essential fat. For women, the figure is 10 to 13 percent, according to the American Council on Exercise (ACE).

Storage fat: Fatty tissue protects the internal organs in the chest and abdomen, and the body can use it if necessary for energy.

Apart from the approximate guidelines for men and women, the ideal total fat percentage can depend on a person’s body type or activity level.

ACE recommend the following percentages:

Activity levelMale body typeFemale body type
Fit non-athletes14–17%21–24%
Obesity38% or more42% or more

A high proportion of body fat can indicate a greater risk of:

  • diabetes
  • heart disease
  • high blood pressure
  • stroke

Calculating body fat percentage may be a good way to measure a person’s fitness level because it reflects the person’s body composition. BMI, in contrast, does not distinguish between fat and muscle mass.

How to measure body fat

The most common ways of measuring body fat percentage is to use a skinfold measurement, which uses special calipers to pinch the skin.

The health professional will measure tissue on the thigh, abdomen, chest (for men) or upper arm (for women). The techniques provide an accurate reading within around 3.5 percent, according to ACE.

Other techniques :

  • hydrostatic body fat measuring, or “underwater weighing”
  • air densitometry, which measures air displacement
  • dual energy X-ray absorptiometry (DXA)
  • bioelectrical impedance analysis

None of these can give a 100-percent accurate reading, but the estimates are close enough to give a reasonable assessment.

Many gyms and doctor’s offices have devices for measuring a person’s body fat percentage.


In this video by What Matters Nutrition, David Brewer, a registered dietician, takes a look at the question of ideal weight, discussing many of the points raised above.


Body mass index (BMI), waist-to-hip ratio (WHR), waist-to-height ratio (WtHR), and body-fat percentage are four ways of assessing a healthy weight.

Combining them may be the best way to get an accurate idea of whether you should consider taking action or not.

Anyone who is concerned about their weight, waist size, or body composition should speak to a doctor or nutritionist. They will be able to advise about suitable options.


Some of the items mentioned in this article are available for purchase online:


Calculate Ideal Body Weight


Knowing your ideal body weight is the first significant step you can take to be healthy. Overweight and obesity is responsible for most of the lifestyle diseases. The Ideal body weight calculator is a useful tool to check the appropriate weight for the given height of a person. The calculator is gender specific with men being heavier for a given height in comparison to women.

If you lead a sedentary lifestyle do keep track of your weight and bookmark this calculator on your browser (To bookmark please click here).

Interesting Facts

  • Growth in men occurs till the age of 25, after which the weight normally remains constant.
  • On an average 70kg or 150lb mass of an adult human body contains approximately 37.2 trillion cells.
  • Almost 99% of the body mass of the human body is made up of six elements namely oxygen, carbon, hydrogen, nitrogen, calcium and phosphorus.
  • There are 60 identifiable chemical elements present in the human body and of these only around 25 are required for life and good health.
  • The elements in the human body are distributed as water, carbohydrates, fats, protein, hydroxylapatite (in bones) along with minerals and DNA.
  • All of the trace elements such as iron, zinc, copper and selenium make up less than 10 grams of the human body.
  • Water is responsible for 60 to 65% of body weight among males and 50% among females. Females have more fat which also means they have higher proportion of carbon.
  • There are more bacteria that reside in normal human gastrointestinal tract than cells in the body.


Calculator ideal weight

BMI healthy weight calculator - Healthy weight

Use this calculator to check your body mass index (BMI) and find out if you're a healthy weight. Or you can use it to check your child's BMI.

Understanding your BMI result


Being underweight could be a sign you're not eating enough or you may be ill. If you're underweight, a GP can help.

Find out more in underweight adults

Healthy weight

Keep up the good work! For tips on maintaining a healthy weight, check out the food and diet and fitness sections.


The best way to lose weight if you're overweight is through a combination of diet and exercise.

The BMI calculator will give you a personal calorie allowance to help you achieve a healthy weight safely.


The best way to lose weight if you're obese is through a combination of diet and exercise, and, in some cases, medicines. See a GP for help and advice.

Black, Asian and other minority ethnic groups

Black, Asian and other minority ethnic groups have a higher risk of developing some long-term (chronic) conditions, such as type 2 diabetes.

These adults with a BMI of:

  • 23 or more are at increased risk
  • 27.5 or more are at high risk

Why waist size also matters

Measuring your waist is a good way to check you're not carrying too much fat around your stomach, which can raise your risk of heart disease, type 2 diabetes and stroke.

You can have a healthy BMI and still have excess tummy fat, meaning you're still at risk of developing these conditions.

To measure your waist:

  1. Find the bottom of your ribs and the top of your hips.
  2. Wrap a tape measure around your waist midway between these points.
  3. Breathe out naturally before taking the measurement.

Regardless of your height or BMI, you should try to lose weight if your waist is:

  • 94cm (37ins) or more for men
  • 80cm (31.5ins) or more for women

You're at very high risk and should contact a GP if your waist is:

  • 102cm (40ins) or more for men
  • 88cm (34ins) or more for women

Children's BMI

For children and young people aged 2 to 18, the BMI calculator takes into account age and gender as well as height and weight.

Overweight children are thought to be at increased risk of a variety of health conditions, and they're also more likely to be overweight as adults.

The BMI calculator works out if a child or young person is:

  • underweight – on the 2nd centile or below
  • healthy weight – between the 2nd and 91st centiles
  • overweight – 91st centile or above
  • very overweight – 98th centile or above

A child's BMI is expressed as a "centile" to show how their BMI compares with children who took part in national surveys.

For example, a girl on the 75th centile is heavier than 75 out of 100 other girls her age.

Measuring waist size is not routinely recommended for children because it does not take their height into account.

See a GP if you're concerned about your child's weight. They may be able to refer you to your local healthy lifestyle programme for children, young people and families.

Find out more in underweight children aged 6 to 12 and very overweight children.

Get tips on how to encourage your child to be more active and eat well

Limitations of the BMI

Your BMI can tell you if you're carrying too much weight, but it cannot tell if you're carrying too much fat.

The BMI cannot tell the difference between excess fat, muscle or bone.

The adult BMI does not take into account age, gender or muscle mass.

This means:

  • very muscular adults and athletes may be classed "overweight" or "obese" even though their body fat is low
  • adults who lose muscle as they get older may fall into the "healthy weight" range even though they may be carrying excess fat

Pregnancy will also affect a woman's BMI result. Your BMI will go up as your weight increases. You should use your pre-pregnancy weight when calculating your BMI.

Apart from these limitations, the BMI is a relatively straightforward and convenient way of assessing someone's weight.

Eating disorders

If you have an eating disorder, the BMI calculator results do not apply. Please get further advice from a GP.

Next steps

You can use your BMI result as a starting point for further discussion with a GP about your weight and general health.

Find out how your GP can help you lose weight and check out the Change4Life website for practical tips on staying healthy as a family.

A BMI above the healthy weight range or too much fat around your waist can increase your risk of serious health problems like:

Page last reviewed: 5 November 2018
Next review due: 5 November 2021

Ideal Weight Calculator

Ideal Weight by Height Calculator Chart

Adults can use the charts below to find the traditional ideal weight for their height and at a healthy body mass index (BMI). While older methods used different equations for men and women, a 2016 study proposed a universal equation based on body mass index. 

A BMI of 22 is in the middle of the normal weight range and is associated with the best health outcomes. These charts are not valid for children or teens.

Remember that ideal weight is not an absolute target for either appearance or health. The values in the charts are estimates and may not take into account factors like muscle mass or health conditions that affect weight.

How Ideal Weight Is Calculated

The traditional ideal weight calculation is essentially a rule of thumb rather than being based on health research or a comprehensive study of population averages.

  • For women: ideal body weight (in kilograms) = 49kg + 1.7kg for each inch over 5 feet
  • For men: ideal body weight (in kilograms) = 52kg + 1.9kg for each inch over 5 feet

These equations were developed for use by doctors to calculate drug dosages. They tend to overestimate ideal weight at shorter heights and underestimate it at taller heights.

However, a 2016 study found that the results correlate well with the body mass index of 21 for women and 22.5 for men, which is near the middle of the healthy BMI range. The authors of the study suggest a different equation using body mass index.

The healthy BMI range is the same for men and women, so the results apply to both. The healthy normal weight range is a BMI between 18.5 and 24.9; a body mass index of 22 is in the middle of that range.

Updated Equations for Ideal Weight

  • Weight in pounds = 5 x BMI + (BMI divided by 5) x (Height in inches minus 60)
  • Weight in kilograms = 2.2 x BMI + (3.5 x BMI) x (Height in meters minus 1.5)

The biggest differences between the older equations and the newer equation come in the taller height range. Also, the ideal for women is the same as for men when using BMI, and the new equation allows a few pounds more at each height for women than the older charts.

Why People Weigh More or Less

You can be healthy in a wide range of weights, but being underweight is associated with poor health outcomes and higher mortality for some conditions, as is being far above the healthy BMI range.

If your weight is above that of the ideal for your height on the charts, it is tempting to think that it is because you are lean but very muscular. This may be true in some cases, but most people usually weigh more because they have more body fat.

Your body mass index, calculated from your height and weight, is commonly used by health authorities to assess if you are overweight or obese.

Very muscular people may have a higher body mass index while still having low body fat. Meanwhile, people who have lost muscle mass and replaced it with fat may appear to have a normal BMI when they actually have too much body fat and not enough muscle for good health outcomes.

The Centers for Disease Control and Prevention (CDC) recommends using both the BMI and your waist circumference to determine whether you are at a healthy weight. A waist over 35 inches for non-pregnant women and over 40 inches for men indicates a higher risk of obesity-related conditions, according to the CDC.

Ideal Height Weight Chart for Adults

If you're wondering what your ideal weight is based on your height, this chart can help.

(in feet and inches)

(in pounds)

(in pounds)

BMI 22
(in pounds)













































































Metric Ideal Height Weight Chart for Adults

(in centimeters)

(in kilograms)

(in kilograms)

BMI 22 
​(in kilograms)













































































Other Measures of Ideal Weight

There are other ways to measure a healthy weight and whether you have increased body fat.

Body Mass Index Calculator

You can find your BMI with a simple calculator using your weight and height. It will then characterize your BMI as underweight, normal, overweight, or obese. 

Body Fat Percentage

Your body fat percentage is not the same as your BMI. This measurement is often used to assess whether you are gaining muscle or losing fat. The healthy ranges are different for men and women. There are a variety of ways to measure it, including using a body fat scale that uses bioelectrical impedance.

Measurements for Kids and Teens

It is not as simple to find the ideal weight for children and teens (up to age 20). The equations for body mass index are different from those of adults. The standard formula to calculate a child's BMI is weight / (height x height) x 703.

This can be done with a calculator on the CDC's website. Then the result is compared to a percentile chart based on age. Normal weight is a BMI between the 5th percentile and the 85th percentile. The CDC has a weight for stature table (in kilograms) based on age.

Why Appearances Vary

Being at the ideal weight for your height doesn't guarantee that you will look the same as another person of that same weight and height. There are multiple factors that affect how different people look at the same weight and height.

Muscle Mass

People who have more lean body mass—muscles rather than fat—will have a different appearance from someone of the same weight who is less muscular.


Each person has different proportions. Some people are longer in the legs and shorter in the torso, and vice versa. If you are a short-waisted woman, it's unlikely you'll have an hourglass figure with a nipped-in waist, no matter what your weight may be.

Body Shape

The SizeUSA study, published in 2004, described variations in body shape for women. Forty-six percent were rectangular, with waists less than 9 inches smaller than hips or bust. Twenty percent had a pear-shaped figure, with hips larger than bust, and 14% were inverted triangles, with bust bigger than hips.

Only 8% had a so-called "hourglass figure," with equal hip and bust measurements and a narrow waist. However, the fashion industry generally designs for an hourglass shape.

Male body shapes have generally been categorized as ectomorph, endomorph, and mesomorph.

Fat Storage

Fat is stored throughout the body, but different people tend to put on extra fat in different places. Some people store extra fat on their stomach and torso, giving them an apple shape. Others store it on their hips, buttocks, and upper thighs, giving them a pear shape.

Age Group

Body composition changes as you age. There are large differences upon the onset of puberty as male and female hormones change the body shape. Then, at menopause, the balance of hormones changes again, and where the body stores fat may change. As they enter older age, people have to work harder to maintain muscle mass.

That being said, it might be helpful to see what other people look like at your weight and height for goal setting. There are multiple online galleries where readers can post their pictures, such as

A Word From Verywell

You don't have to strive to meet a certain number in order to have a healthy body. If you find yourself focused too much on the scale and getting discouraged, take positive steps instead. It is more important that you are physically active and eat nutritious food to keep your body strong and in working order.

How to Measure Your BMI to Determine Weight Range

Thanks for your feedback!

Verywell Fit uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.

  1. Peterson CM, Thomas DM, Blackburn GL, Heymsfield SB. Universal equation for estimating ideal body weight and body weight at any BMI.Am J Clin Nutr. 2016;103(5):1197-203. doi:10.3945/ajcn.115.121178

  2. Klatsky AL, Zhang J, Udaltsova N, Li Y, Tran HN. Body mass index and mortality in a very large cohort: Is it really healthier to be overweight?. Perm J. 2017;21:16-142. doi:10.7812/TPP/16-142

  3. Centers for Disease Control and Prevention. Assessing your weight. Reviewed September 17, 2020.

  4. Thomas E, Gupta PP, Fonarow GC, Horwich TB. Bioelectrical impedance analysis of body composition and survival in patients with heart failure. Clin Cardiol. 2019;42(1):129-135. doi:10.1002/clc.23118

  5. National Heart Lung and Blood Institute. Body mass index, BMI calculator, healthy BMI.

  6. McCormack H. The shape of things to wear: Scientists identify how women's figures have changed in 50 years. The Independent. Published November 21, 2005.

Additional Reading
  • Centers for Disease Control and Prevention. Assessing your weight. Updated September 17, 2020. 

  • SizeUSA The National Sizing Survey Women Body Measurement and Data Analysis Reports on the U.S. Population, 2004.

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Ideal Weight Calculator

The Ideal Weight Calculator computes ideal body weight (IBW) ranges based on height, gender, and age. The idea of finding the IBW using a formula has been sought after by many experts for a long time. Currently, there persist several popular formulas, and our Ideal Weight Calculator provides their results for side-to-side comparisons.


The ideal weight based on popular formulas:

FormulaIdeal Weight
Robinson (1983)72.6 kgs
Miller (1983)71.5 kgs
Devine (1974)75.0 kgs
Hamwi (1964)77.3 kgs
Healthy BMI Range59.9 - 81.0 kgs

How Much Should I Weigh?

Most everyone has at some point tried to lose weight, or at least known somebody who has. This is largely due to the perception of an "ideal" body weight, which is often based on what we see promoted through various media such as social media, TV, movies, magazines, etc. Although ideal body weight (IBW) today is sometimes based on perceived visual appeal, IBW was actually introduced to estimate dosages for medical use, and the formulas that calculate it are not at all related to how a person looks at a given weight. It has since been determined that the metabolism of certain drugs is more based on IBW than it is total body weight. Today, IBW is also used widely throughout sports, since many sports classify people based on their body weight.

Note that IBW is not a perfect measurement. It does not consider the percentages of body fat and muscle in a person's body. This means that it is possible for highly fit, healthy athletes to be considered overweight based on their IBW. This is why IBW should be considered with the perspective that it is an imperfect measure and not necessarily indicative of health, or a weight that a person should necessarily strive toward; it is possible to be over or under your "IBW" and be perfectly healthy.

How much a person should weigh is not an exact science. It is highly dependent on each individual. Thus far, there is no measure, be it IBW, body mass index (BMI), or any other that can definitively state how much a person should weigh to be healthy. They are only references, and it's more important to adhere to making healthy life choices such as regular exercise, eating a variety of unprocessed foods, getting enough sleep, etc. than it is to chase a specific weight based on a generalized formula.

That being said, many factors can affect the ideal weight; the major factors are listed below. Other factors include health conditions, fat distribution, progeny, etc.


In theory, age shouldn't be a large determinant of an IBW past the ages of 14-15 for girls and 16-17 for boys, after which most people stop growing. It is actually expected that human males and females to lose 1.5 and 2 inches in height respectively by age 70. It is important to remember that as people age, lean muscle mass decreases and it is easier to accumulate excess body fat. This is a natural process, though it is possible to lessen the effects of aging by adopting various habits such as monitoring diet, exercise, stress, and sleep.


Generally, females weigh less than males even though they naturally have a higher percentage of body fat. This is because the male body generally has higher muscle mass, and muscle is heavier than fat. Not only that, but women generally have lower bone density. Last but not least, males tend to be taller than females.


The taller the person, the more muscle mass and body fat they have, which results in more weight. A male at a similar height to a female should weigh about 10-20% heavier.

Body Frame Size

Body frame size is another factor that can have a significant impact on the measurement of ideal weight. Body frame size is typically categorized as small, medium, or large boned. It is measured based on the circumference of a person's wrist in relation to their height, as shown below.

For women:

  • Height under 5'2"
    • Small boned = wrist size less than 5.5"
    • Medium boned = wrist size 5.5" to 5.75"
    • Large boned = wrist size over 5.75"
  • Height between 5'2" and 5' 5"
    • Small boned = wrist size less than 6"
    • Medium boned = wrist size 6" to 6.25"
    • Large boned = wrist size over 6.25"
  • Height over 5' 5"
    • Small boned = wrist size less than 6.25"
    • Medium boned = wrist size 6.25" to 6.5"
    • Large boned = wrist size over 6.5"

For men:

  • Height over 5' 5"
    • Small boned = wrist size 5.5" to 6.5"
    • Medium boned = wrist size 6.5" to 7.5"
    • Large boned = wrist size over 7.5"

A person who is large boned will naturally weigh more than someone who is small boned, even at the same height, making body frame size a factor that can affect measurements such as IBW and BMI.

Formulas for Finding the Ideal Weight

IBW formulas were developed mainly to facilitate drug dosage calculations. All of the formulas, have the same format of a base weight given a height of 5 feet, with a set weight increment added per inch over the height of 5 feet. For example, if you are a 5'10" male estimating your ideal weight with the Devine formula, you would add (2.3 × 10) kg to 50 kg to get 73 kg, or ~161 lbs.

The formulas differ in the values used based on the research of the scientists involved in their development, and their findings. The Devine formula is the most widely used formula for the measurement of IBW.

G. J. Hamwi Formula (1964)

Male:48.0 kg + 2.7 kg per inch over 5 feet
Female:45.5 kg + 2.2 kg per inch over 5 feet

Invented for medicinal dosage purposes.

B. J. Devine Formula (1974)

Male:50.0 kg + 2.3 kg per inch over 5 feet
Female:45.5 kg + 2.3 kg per inch over 5 feet

Similar to the Hamwi Formula, it was originally intended as a basis for medicinal dosages based on weight and height. Over time, the formula became a universal determinant of IBW.

J. D. Robinson Formula (1983)

Male:52 kg + 1.9 kg per inch over 5 feet
Female:49 kg + 1.7 kg per inch over 5 feet

Modification of the Devine Formula.

D. R. Miller Formula (1983)

Male:56.2 kg + 1.41 kg per inch over 5 feet
Female:53.1 kg + 1.36 kg per inch over 5 feet

Modification of the Devine Formula.

Healthy BMI Range

The World Health Organization's (WHO) recommended healthy BMI range is 18.5 - 25 for both males and females. Based on the BMI range, it is possible to find out a healthy weight for any given height.

BMI is a commonly used metric for determining IBW. It is widely used in the medical field as a quick indicator of possible health complications. Generally, the higher the BMI, the higher the chance a person will suffer from health problems such as obesity, diabetes, heart disease, and many more. It is an indicator used by doctors to advise their patients of potential health problems, especially if there is a noticeable progressive increase in their BMI, and is currently the official metric for classifying individuals according to different obesity levels.

Healthy BMI Range for Children

All the formulas above are for adults age 18 or older. For children and teens, please refer to the following BMI charts published by the Centers for Disease Control and Prevention (CDC). The CDC recommends that children maintain a BMI between the 5th and 85th percentile based on their age.

  1. CDC BMI chart for boys between ages 2 and 20
  2. CDC BMI chart for girls between ages 2 and 20

Limitations of our IBW calculator

There are limitations to all the formulas and methods. Because the formulas are designed to be as applicable to as wide a range of people as possible, they cannot be highly accurate for every single individual. The formulas factor only height and gender, and there are no considerations for physical handicaps, people on the extreme ends of the spectrum, activity levels, or muscle mass to body fat ratios, otherwise known as body composition. Our Ideal Weight Calculator is meant to be used as a general guideline based on popular formulas, and its results are not intended as strict values that a person must achieve to be considered an "ideal weight."


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