Ideal Body Weight Calculator

Filed under Nutrition & Fitness Calculators

Do you know what your ideal body weight is for a person of your height, frame size, and gender?

Use this accurate body weight calculator to figure out what your ideal weight is.


Frame Size

Estimate your frame size, or use the chart below (if you have a tape measure handy).


Your Ideal Weight Range


  • 140 page step-by-step guide.
  • Achieve fat loss without starvation.
  • Individually tailored to your body composition.
Learn More

Frame Size

To identify your frame size use a measuring tape and the height chart below.


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″


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 you can use this simple (less accurate method):

Grip your wrist using your thumb and longest finger.

  • If your finger and thumb don’t touch you are a LARGE frame.
  • If your finger and thumb just touch you are a MEDIUM frame.
  • If your finger and thumb overlap you are a SMALL frame.

Your Ideal Body Weight

Knowing your ideal body weight is a good first step to take before you start macro counting or flexible dieting. This helps you to have realistic expectations and to establish a healthy goal weight.

Understanding your optimal weight can help you with the following aspects of dieting:

  • Allows you to set realistic weight loss goals.
  • Prevents the thinking that weight loss is necessary when it isn’t.
  • Gives you a baseline to use for building muscle.
  • Helps with maintaining a healthy weight for your height.
  • Shows you a goal to strive for if you are underweight.

Why Frame Size is Important

Other ideal body weight calculators don’t factor for frame size and this is an important factor in determining an ideal body weight for a person of your height.

The term frame size refers to the mass of your skeletal structure. Those with more bone mass will weigh more than people with less bone mass who are of similar height. However, this isn’t factoring for bone density.


A 5’6″ woman who has a large frame size should weigh between 139-143 pounds, whereas a 5’6″ woman with a small frame should weigh 124-128.

This feature is why our ideal body weight calculator provides the most accurate results possible and paints a more realistic picture of what your ideal body weight should be.

How Optimal Body Weight is Calculated

Our calculator uses two well-respected formulas for determining ideal body weight. For women, the Robinson formula is used and for men, it uses the Devine formula. (see the references below)

While these formulas can’t account for all individual differences that may contribute to a person’s optimal weight, they do provide a good estimate of what’s ideal for a person of your height.

Taking This Further

Once you have determined a bodyweight that is in the ideal range for you personally, you can use that information to establish a body transformation goal that’s appropriate.

You can then use our TDEE and macro calculator to determine how much you need to eat in order to achieve that goal. This calculator uses the flexible dieting approach that doesn’t prohibit foods or certain ingredients but allows you to eat what you love as long as they fit your prescribed set of macros.


  • Robinson, J. D., Lupkiewicz, S. M., Palenik, L., Lopez, L. M., & Ariet, M. (1983). Determination of ideal body weight for drug dosage calculations. American Journal of Health-System Pharmacy, 40(6), 1016-1019. Link
  • McCarron, Margaret M., and Ben J. Devine. “Clinical Pharmacy: Case Studies: Case Number 25 Gentamicin Therapy.” Drug Intelligence & Clinical Pharmacy 8.11 (1974): 650-655. Study Link
  • Pai, M. P., & Paloucek, F. P. (2000). The origin of the “ideal” body weight equations. Annals of Pharmacotherapy, 34(9), 1066-1069. Study Link
Ted Kallmyer is an ISSA certified Specialist in Fitness Nutrition, author, and macros coach. He has helped hundreds of clients reach their body transformation goals.
Updated February 27, 2022


  • Grace 1 week ago

    I weigh 185. How many calories do I need to eat to lose 50 pounds

    • Ted Kallmyer (Certified Macro Coach) 1 week ago

      Hi Grace, Head over to my calorie and macro calculator to see how much your should be eating based on your activity: Macro Calculator

  • Ashley 4 weeks ago

    I’m a 5’2″ woman – from birth – with a large frame. My ancestry is Norwegian-Scottish & Hungarian-German and as friends joke I am built like a tank. At the local gym lifting more than some of the men is nothing new. I’m 168lbs. According to this ideal weight calculation I am supposed to weigh 123-127lbs. If I did I’d look like a victim of starvation whose only meal for years and years was toast.

  • Frederick 4 months ago

    I’m 32 year old, 6’2″ and 220lbs, medium frame(wrist size 7.25″).

    I’d have to be 5.5% to 7.5% body fat to be in my “ideal” body weight range (185-189lbs). I think inaccuracies are inherent in any simple formula to determine the ideal range but this weight range is too narrow I would broaden it by 5%.

    And I think a more realistic ideal weight for me would be 190 to 205lbs with 9% to 15% body fat.

    • Ted Kallmyer (Certified Macro Coach) 4 months ago

      What’s your body fat percentage currently? The healthy range is actually anywhere between the lowest of a small frame and the highest of a large frame. Wrist size isn’t always an accurate measure.

  • Dennis Adams 6 months ago

    hahaha ok im 5’6 and weight a perfect 200 but does that mean im gonna be overweight when i get old? not necessarily