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ibw Calculator

Ideal Body Weight Calculator

This free ideal body weight calculator aids in calculating an individual’s ideal weight depending upon age, gender, and height.


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What’s my ideal weight is a pretty common question for most men and women. Ideal weight calculator is a highly accurate tool that helps to calculate an optimal weight for men and women taking into consideration age, gender, and height. The ideal body weight calculator calculates an ideal weight for height and age, and gender according to the formulas developed by authors: Broca, Lorentz, Hamwi, Devine, Robinson, Miller, Lemmens, Lorentz, Peterson. Also, this IBW calculator calculates IBW by using the BMI method, Intuitive method, and Baseline method.


Ideal Body Weight Calculator Tells About Ideal Weight for Men and Ideal Weight for Women in Just Seconds without Any Ideal Weight Chart

People are concerned about what is my ideal weight and do it fall in a suitable range! Ideal weight for men varies from ideal weight for women. Let us find out more about IBW.

What is Ideal Body Weight?

It is a weight value that is dependent on different factors. The basic function of ideal body weight is to determine that either the individual is healthy or not. The main factors that affect the ideal body weight are age, gender, and height. The formula for the IBW calculation is different for both males and females.

Different Formula’s For Calculating Ideal Body Weight:

IBW formulas were specifically developed to facilitate drug dosage calculations. The given formulas vary in the values used depends on the research of the scientists involved in their development and their findings. The Devine formula is well-known for finding IBW. Our ideal body weight calculator is also using the given formula to calculate ideal body weight for men and women.

J. D. Robinson Formula (1983):

For Men:

IBW = 52 + (1.9 x (Ht – 60))

For Women:

IBW = 49 + (1.7 x (Ht – 60))


IBW = Ideal Body Weight in Kilograms (Kg).

Ht = height in Inches (in.).

D. R. Miller Formula (1983):

For Men:

IBW (For Men) = 56.2 + (1.41 x (Ht – 60))

For Women:

IBW (For Women)= 53.1 + (1.36 x (Ht – 60))


IBW = Ideal Body Weight in Kilograms (Kg).

Ht = height in Inches (in.).

B. J. Devine Formula (1974):

For Men:

IBW (For Men)= 50 + (2.3 x (Ht – 60))

For Women:

IBW (For Women)= 45.5 + (2.3 x (Ht – 60))


IBW = Ideal Body Weight in Kilograms (Kg).

Ht = height in Inches (in.).

G. J. Hamwi Formula (1964):

For Men:

IBW (For Men)= 48 + (2.7 x (Ht – 60))

For Women:

IBW (For Women)= 45.5 + (2.2 x (Ht – 60))


IBW = Ideal Body Weight in Kilograms (Kg).

Ht = height in Inches (in.).

Dr. P.P. Broca (The Broca Index) (1871):

For Men:

IBW (kilograms) = [Height (cm) – 100] – ([Height (cm) – 100] x 10%)

For Women:

IBW (kilograms) = [Height (cm) – 100] + ([Height (cm) – 100] x 15%)

The simple version of Broca Index is:

For Men:

For the first 5 feet allow 110 lbs and 5 lbs for each additional inch

For Women:

For the first 5 feet allow 100 lbs and 5lbs for each additional inch

The Lemmens Equation:

Women, Men: IBW [kg] = 22 × height[m] 2

Lorentz Formula:

For Men

W = (height [cm]− 100) − ((height − 150)/4)

For Women:

W= (height − 100) − ((height − 150)/2)

Peterson C.M Equation:

For US:

Wt (lb) = 5 × BMI + (BMI ÷ 5) × (Ht − 60 in)

For Metric:

Wt (kg) = 2.2 × BMI + 3.5 × BMI × (Ht − 1.5 m)

Body Mass Index Formula:

IBW (Minimum) = (18.5 ÷ 703) x Ht2

IBW (Maximum) = (24.9 ÷ 703) x Ht2


IBW = Ideal Body Weight in Kilograms (Kg)

Ht = height in Inches (in.)


What is the Ideal Body Weight Calculator?

The online ideal body weight is a facility for medical personnel to immediately calculate IBW (ideal body weight). Medical personnel has to deal with a plethora of patients each day. The manual calculation is time-consuming and hectic. However, it is made significantly simple and amazing through the facility of the ideal weight calculator. It saves time and provides fabulous results quite instantly. This calculation lets healthcare professionals have a general idea about the patient.

How to Use Ideal Body Weight Calculator:

Our ideal weight calculator is fully loaded with user-friendly interface; you just have to follow the given steps to get your ideal weight:


  • First of all, you ought to add you age in years into the designated box
  • Very next, you just have to select your gender from the drop-down menu
  • Then, you ought to enter your height into the designated box, it can be either be in ft/in or cm
  • Right after, you ought to enter your current body weight into the designated box, it can be either in lbs or kg
  • Finally, you have to select the ideal body weight formula by which you want to calculate your ideal weight


Once you entered the above parameters, then hit the calculate button, this healthy weight calculator shows:

  • Your Ideal Body Weight
  • Adjusted Body Weight (ABW)
  • Percent over/under IBW (Ideal Body Weight)
  • (DuBois) Body Surface Area
  • Your BMI or Body Mass Index
  • Your Lean Body Weight (LBW)

Which Factors Affect The Ideal Weight?

Well, there are several factors that can affect the ideal weight; the most well-known factors are mentioned-below. Many other factors include health conditions, fat distribution, progeny, etc.

  • Age
  • Gender
  • Height
  • Body Frame Size

Why Body Frame Size is Important?

The body frame size does matter; this term refers to the mass of your skeletal structure. People with more bone mass will weigh more than those with less bone mass who are with similar height. However, remember that this is not factoring for bone density.

If you want to find your frame size, then you ought to use a measuring tape and the height chart below:

For Women:

Height under 5’2″

  • Small = wrist size less than 5.5″
  • Medium = wrist size 5.5″ to 5.75″
  • Large = wrist size over 5.75″

Height 5’2″ to 5′ 5″

  • Small = wrist size less than 6″
  • Medium = wrist size 6″ to 6.25″
  • Large = wrist size over 6.25″

Height over 5′ 5″

  • Small = wrist size less than 6.25″
  • Medium = wrist size 6.25″ to 6.5″
  • Large = wrist size over 6.5″

For Men:

Height over 5′ 5″

  • Small = wrist size 5.5″ to 6.5″
  • Medium = wrist size 6.5″ to 7.5″
  • Large = wrist size over 7.5″

If you don’t have a measuring tape, then quit worrying, you can use this simple but less accurate method:
You just have to grip your wrist using your thumb and longest finger.

  • If your finger and thumb don’t touch, then it means you are a LARGE frame
  • If your finger and thumb just touch, then it means you are a MEDIUM frame
  • If your finger and thumb overlap, then means you are a SMALL frame

Your Ideal Body Weight:

Understanding your optimal weight is immensely important as it can assist you with the given aspects of dieting:

  • It allows you to set realistic weight loss goals
  • It prevents the thinking that weight loss is necessary when it isn’t in actual
  • It gives you a baseline to use for building muscle
  • It assists with maintaining a healthy weight for your height
  • If you are underweight, it shows you a goal to strive

How much should I weigh for my height and age chart?

The given chart shows the weights in the different BMI ranges for adults at different heights.

Height Weight
Normal Overweight Obesity Severe 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.
BMI 19 to 24 25 to 29 30 to 39 40 to 54

Remember that a chart isn’t always said to be as the best way to find out your ideal weight, it cannot more than be a good guideline.

If your weight and height distributions aren’t found here, then immediately consult with our simple ideal body weight calculator. Keep in mind, Body Mass Index (BMI) is not accurate for individuals who are outside of the chart above. In simple words, shorter and taller people will have a BMI that may not be representational of their health.

How To Calculate Ideal Body Weight?

Read on!

Body Mass Index (BMI):

The National Institutes of Health (NIH) reveals that you can calculate your ideal weight if your weight is within ideal range by just measuring your Body Mass Index. Basically, this calculation is helps to measures your weight in relation to your height to compute your overall mass. Also, it’s one of the most well-known tools that used to check if a individual has the appropriate weight.

To calculate, get the weight (kg) and then divide it by the height in m² (meters squared).

BMI = kg / m²

According to The National Institutes of Health, adults 20 years old and above under this scale:

  • Underweight = BMI below 18.5
  • Normal = BMI between 18.5 – 24.9 (considered ideal)
  • Overweight = BMI between 25 and 29.9
  • Obesity = BMI of 30 or more

Note: This method only taken into account for an individual’s height in relation to weight. Your BMI overlooks equally important factors that are:

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

Apart from BMI, there are several other factors that help to determine your ideal body weight!

Waist-to-Hip Ratio (WHR):

This measurement helps you to figure out how much fat is stored around your hips, waist, and buttocks. Basically, it compares your hip circumference with your actual waist size.

Quit worrying, you can be able to determine your waist-to-hip ratio with the assistance of professional, or you can DIY with a measuring tape, just follow the given steps:

  • To calculate hip circumference – you have to take the measuring tape and put it around the widest part of your hips and buttocks
  • To calculate waist circumference – you have to take the measuring tape and breathe normally. Once you breathe out, then you ought to wrap the tape around the smallest part above your belly button, this is your natural waist line
  • To get WHR, there is a need to divide your waist circumference (WC) by your hip circumference (HC)


Remember that a healthy hip-to-waist ratio is varying for men and women. The World Health Organization published a study; a good WHR is 0.9 or less for men, and 0.85 or less for women.

Studies reveal that having a WHR more than 1.0 can increase the chances of getting heart problem and even conditions that associated to being overweight for both men and women.

Risk to Health Men Women
Low 0.95 or less 0.80 or less
Moderate 0.96 – 1.0 0.81 – 0.85
High 1.0 or above 0.86 or above

Note: WHR measurement is well-known for checking obesity in older adults. The National Health Services (NHS) published a report that determining WHR can be more accurate than BMI to figure out the risk for heart disease and premature death.

Determining your WHR can be inaccurate as you need to take to measurements, and even it is quite difficult to attain a precise measurement of your hips.

Body Fat Percentage:

To measure your body fat percentage, you should have to divide the weight of your body fat (WBD) by your total weight (TW).


The most accurate and well-known way to calculate your body fat percentage is to submerge your body in a tank of water. No doubt, this method needs medical assistance and can be expensive.

If you want to do it yourself, then remember that the outcomes may not be very precise. You should have to measure the following:

  • Height
  • Weight
  • Waist and hip circumferences
  • Wrist and forearm circumferences

Also, you can get tools like calipers that measure the amount of fat around your waist. You can get special censors and scales to estimate your body fat.

The American Council of Exercise (ACE) reported, it is a healthy approach to have 2% to 4% of essential body fat composition for men, for women 10% to 13%.

Keep in mind, the total fat percentage still based on an individual body type and activity level. The ACE recommends the given scale:


Activity level Male body type Female body type
Athletes 6–13% 14–20%
Fit non-athletes 14–17% 21–24%
Acceptable 18–25% 25–31%
Overweight 26–37% 32–41%
Obesity 38% or more 42% or more

Now, let’s swipe down to get more about IBW.

What is Ideal Body Weight for Kids and Teens?

No doubt, it is not simple to determine IBW for children and teens (up to age 20). Also, the equations for Body mass index or BMI are varying from those of adults. The standard formula to find out a child’s Body Mass Index is: weight/(height x height) x 703. You can do this calculation with a calculator on our site. After that, the result is compared to a percentile chart depends on age. BMI between the 5th percentile and the 85th percentile is considered as a normal weight.

What’s the ideal weight for males and females?

Well, remember that the ideal weight for female and male are different for each other. That’s all because females typically have more body fat than males.

Also, fat is distributed differently on the body, as females tend to store more fat in the thighs, hips, and buttocks. For females, it’s normally said to healthy to have between 21 and 24 percent body fat. For males, generally 14 to 17 percent is considered the healthy range.

Experts really don’t have an idea exactly why females store more fat than males. Some studies found that it has to do with a mix of hormones, different enzyme concentrations, and hormone receptors.

How should I manage my weight?

However, there is no such magic pill, special workout plan, and even secret diet that will assist you to maintain your weight. Instead, you just have to maintain healthy habits; it plays a key role in staying at a healthy weight.

If you want to shed weight, then immediately consult your health care provider to create a plan for weight loss.

You can also try the following things to manage your weight:

Eat A Diet of Healthy, Whole Foods:

You have to consume fresh fruits and vegetables, lean protein, whole grains, low-fat dairy, and nuts. You will get these foods from the nearby grocery store.

Get Regular Exercise:

You have to get 150 minutes of a moderate physical activity per week like walking, or you can stick on 75 minutes of more vigorous activity like running.

Keep a Food Diary to Track Calories:

Keep in mind; burning more calories than you take in is a key factor to weight loss. You may ever notice that you intake mindlessly while watching TV or consume large portions while out at restaurants. A diary works as assistance to notice these patterns.

Get Support From Friends And Family:

Overeaters Anonymous is a support group for individuals with consuming disorders that is anorexia, compulsive overeating, bulimia, food addiction, and more.

What Do Different Heights and Weights Look Like?

Being at the ideal weight for height doesn’t ensure you that you will look the same as another person of the same height and weight. However, there are several other factors that affect how different people look at the same height and weight.


Individual who have more lean body mass, muscles instead of fat will have a different look from someone of the same weight and less muscular.


Remember that every individual has different proportions. You can see some individuals are longer in the legs and shorter in the torso, and vice versa.

Body Shapes:

In 2004, the SizeUSA study found these variations – about 46% were rectangular with the waist less than 9 inches smaller than the hips or bust. Only 20% had a pear-shaped figure in which the hips larger than the bust. 14% were inverted triangles in which the bust bigger than the hips. And, only 8% had an hourglass figure with equal bust and hip measurements and a narrow waist. However, generally, the fashion industry is designed for an hourglass shape. Basically, male body shapes have been categorized as an endomorph, ectomorph, and mesomorph.

Where You Store Fat:

As mentioned earlier that fat is something that is stored throughout your body, but many people tend to put on extra fat in different places. However, there are some people who store fat on their stomach and torso, and giving them an apple shape. Others store it on their buttocks, hips, and upper thighs, giving them a pear shape.


Studies found that body composition changes as you age. However, there are large differences upon the onset of puberty as female and male hormones change the body shape. Then, as females enter menopause, their balance of hormones change and they may notice a change in where they store fat. Entering old age, both women and men should have to work harder to maintain their muscle mass.

Height Weight Calculator:

The height weight chart aids a lot in determining the outcomes. If I want to determine my ideal weight, then I should first determine my height and weight. Then, it is required to fill the details of height and weight in given slots. After feeding the data, you would come to know the results which you can compare form the ranges to determine in which category you fall.

Limitation of IBW Calculator:

When it comes to the IBW calculator, then there exist benefits associated with it, such as accessibility, accuracy and rapid results. But there exist some limitations in the IBW calculator which is that it considers merely the weight and height factor for effective and efficient IBW results. But, it does not account for the handicap. It does not determine the activity levels of people. likewise, it is unable to determine body composition as well as muscle mass to body fat ratio. Hence, IBW calculated is taken for general consideration.


How do you calculate ideal body weight in pounds?

To calculate body weight in pounds, you have to multiply the desired by 5 and then add BMI/5 lb for each inch >5 ft in height.

What is adjusted body weight?

Adjusted Body Weight (ABW) is taken into account by some dietitians for obese patients while calculating energy requirements. Adipose tissue is not as metabolically active as lean tissue, so remember that using actual body weight in equations to predict Basal Energy Expenditure (BEE) for obese individuals may result in an overestimation. The actual equation depends on the assumption that 25 percent of the excess weight in an obese individual is metabolically active tissue.

What is IBW range?

Estimate Ideal body weight in (kg):

  • Males: IBW = 50 kg + 2.3 kg for each inch over 5 feet
  • Females: IBW = 45.5 kg + 2.3 kg for each inch over 5 feet.

What is the perfect weight for 6 feet male in KG?

Experts reveal that weight for a 6 feet male shall be in the range of 64 to 82 KG.

What percentage is ideal weight?

The value that indicate the percentage excess or deficit in the IBW or Ideal Body Weight (assuming 100% is the ideal). The “xs/def” value indicates the actual lb (kg) excess or deficit of the Ideal Body Weight (IBW).

What is my ideal weight for height and age?

There are several formulas that most widely used for measurements of IBW:

  • J. D. Robinson Formula (1983)
    D. R. Miller Formula (1983)
    B. J. Devine Formula (1974)
    G. J. Hamwi Formula (1964)
    Dr. P.P. Broca (The Broca Index) (1871)
    Body Mass Index Formula

These all formulas are discussed-above!

What is considered a healthy body weight?

A weight is considered to be a healthy weight with a Body Mass Index (BMI) of 24 or less and BMI of 25 to 29.9 is considered overweight.

What is total body weight?

Lean Body Mass (LBM), or Fat-free mass, is said to be a component of body composition. It is determined by subtracting fat weight from Total Body Weight (TBW). And, total body weight (TBW) is lean plus fat or TBW is the patient’s actual weight. In equations:

  • LBM = BW − BF
  • LBM + BF = BW


Remember that there is no such a perfect way to calculate your ideal body weight as it based on many factors. However, these factors not only include your age and sex, but also your body fat percentage & distributions. For instant calculations, you just have to enter values into the above accurate ideal weight calculator, hit calculate button!
Additionally, Pregnancy can make your muscles & bones heavier and denser to accommodate for the extra weight. In such cases, an ideal weight for you may be higher than you expect, so here you need to consult with Medical professional.
Eating well and adopt a healthy lifestyle, consider visiting your MEDICAL EXPERT for a Physical exam to make a plan to lose or gain weight.


The results that get by our ideal body weight calculator must be re-checked and should not be used alone to guide patient care. This calculator accounts for educational/informational purposes!


From Wikipedia, the free encyclopedia – Human Body Weight – Ideal Body Weight

By Breakingmuscle – Fitness Guide About Ideal Body Weight

Ian Yuan MEng, MD, Ashish C. Sinha MBBS, MD, PhD, DABA, in Anesthesia and Uncommon Diseases (Sixth Edition), 2012 – Obesity and Nutrition Disorders – View Chapter of Ideal Body Weight 


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