Ideal Body Weight Calculator

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 *


Your Ideal Weight Range



*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
Last Updated: October 4, 2019


  1. Libby 1 month ago

    I do not understand, this makes no sense. Most of my body is bones, yet it’s saying I’m severely over weight. Lmfao this thing is sooooooo wrong, I’m sorry but it is. I’m 68.5 and 210, only fat on my body is on my breast(I’m an F cup going up to g cup!). My hips are literally no fat on them, 50 33 50!! My wrists are small yet my frame is not, your wrists has nothing to do with the size of your frame. I’m sorry but this isn’t right one bit, maybe it just doesn’t work for someone like me. I don’t work out much, but enough to have some big thighs and butt! Idk this is just so way off from what’s healthy for someone like me. If I was 170 or under I would be dead!

    • Ted Kallmyer (Macro Coach) 1 month ago

      Hi Libby, I don’t think you understand body composition. Most of a person’s body weight isn’t bone. There wouldn’t be any health standards that would support the notion that 210 pounds is a healthy weight for a 5’8.5″ female or even a man at that height.

  2. Wood hughes 5 months ago

    My bath scale senses and uploads various info to my Apple Health app, but it doesn’t offer any way to adjust for frame size. I’m 6‘4” With a 7.75” wrist size, so all the body fat percentage, BMI, etc. seem to be calculated for medium.

    Do you know of and recommend any sensor scales that offer frame size adjustments?

  3. Debbie 6 months ago

    I’m trying out find out my ideal went for a female my age, 70 years.

    • Ted Kallmyer (Macro Coach) 6 months ago

      Hi Debbie, The calculator should give you a good idea, but people are different so take it with a grain of salt. The calculator can’t account for every factor.

  4. Anonymous 6 months ago

    I don’t think this can be correct – I put in height 175cm, large frame (my wrist is 17cm) and female, and it gave me a weight of 68-70kg. If a person with a large frame isn’t supposed to be higher than the middle of the healthy BMI range, who is?

    • Ted Kallmyer (Macro Coach) 6 months ago

      I’m not exactly sure what you’re asking but BMI isn’t a great measure of healthy weight. There are a lot of things that can negatively skew it like muscle mass and frame size.

  5. henal doshi 7 months ago

    what formula is used for considering body frame and Ideal weight calculation

    • Ted the Macro Coach 7 months ago

      Hi Henel, The formulas are from the studies linked to in the references at the bottom of the page.

  6. Tanya Mendez 8 months ago

    Thanks for the reply Ted. I’m not familiar with the term Macros. Can you put that in Layman’s Terms for me please? Also how can I calculate (or keep track of it)? I’m not good at Math. The only macaroons that I know of are the colorful French sandwich cookies. Lol. Yeah I know it’s spelled differently.

    • Ted the Macro Coach 8 months ago

      Hi Tanya, Macros are protein, carbs, and fat. I encourage you to read the article I mentioned which explains things and you can use our calculator which does the math for you. Flexible Dieting Macro Calculator

    • Emaan 6 months ago

      I want to lose some weight. I am 5 ‘ 1 and I weight 113 pounds. Am I fat? How can I loose weight without dieting or anything related to food? What is the best excersise to do?

      • Ted the Macro Coach 6 months ago

        It seems like you are in a healthy weight range for your height. You probably want to focus on strength training and build stronger muscle tissue. This will tone everything up.

  7. Tanya Mendez 8 months ago

    What are some easy, fun, and affordable ways to loose weight???