FreeToolStation

Waist to Hip Ratio Calculator

Waist to hip and waist to height, with the WHO risk bands.

Health Calculators Free, no sign-up Runs in your browser

At the narrowest point, usually just above the navel.

At the widest point.

Optional, for the waist-to-height ratio.

—
Waist to hip ratio
—
WHO category
—
Waist to height ratio
—
Waist to height band
—
Shape
Risk bandMenWomen
Where fat is carried matters as well as how much. Fat around the middle is associated with more metabolic risk than the same amount on the hips and thighs, which is what these ratios are trying to capture.

About the Waist to Hip Ratio Calculator

Waist to Hip Ratio Calculator divides your waist measurement by your hip measurement and places the result in the World Health Organization's risk bands. It also gives the waist-to-height ratio, which many researchers now consider the better single indicator of the two.

What both ratios capture that weight does not is where fat is carried. Visceral fat around the abdomen sits among the organs and is associated with more metabolic risk than the same amount of fat on the hips and thighs. Two people of identical weight and BMI can differ substantially on this measure.

The waist-to-height rule is the easiest health guideline there is: keep your waist under half your height. It needs no tables, applies to adults of both sexes and most ethnicities, and can be checked with a piece of string folded in half.

This is general information and not medical advice. The formula cannot know your medical history, your medication, your body composition or anything else specific to you. Speak to a doctor or another qualified professional about any question concerning your health, and never delay seeking advice because of a figure on this page.

Your measurements are processed inside your own browser. Height, weight, age and anything else you enter never leave your device, nothing is logged, and nothing survives closing the tab.

Looking for something this does not cover? FreeToolsHub.org is another hub of free online tools that need no account, and it is worth a look if waist to hip ratio calculator is only part of what you are working on.

How to use the Waist to Hip Ratio Calculator

  1. Choose sexThe fields below change to match what you pick, so only the figures that matter to your case are asked for.
  2. Enter waist (cm), hip (cm) and height (cm)Decimals are fine, and thousands separators are accepted and ignored.
  3. Read the waist to hip ratio, who category and waist to height ratioThe figures update as you type. The Calculate button is there if you would rather press something, but nothing waits for it.
  4. Copy or check the resultCopy the summary with the copy button, or open the table to check it row by row.

Features

  • Shows waist to hip ratio, who category, waist to height ratio, waist to height band and shape together, so you are not running it twice
  • A results table you can read across
  • Updates as you type, with no button to press and no page reload
  • Copy the result in one click
  • Free, no sign-up, and it runs entirely in your browser

Who uses this tool

The waist to hip ratio calculator is used by writers, developers, students, marketers and anyone else who needs the job done once without installing software. Common cases include:

  • Checking central fat distribution alongside BMI
  • Applying the keep-your-waist-under-half-your-height rule
  • Tracking changes in body shape over time
  • Getting a measure BMI cannot provide

Frequently asked questions

Where do I measure my waist?

At the narrowest point, usually just above the navel, standing relaxed and breathing out normally. Do not pull the tape tight or hold your stomach in.

Which is better, WHR or waist to height?

Waist to height is simpler, needs no hip measurement and performs at least as well in research. The half-your-height rule is the version worth remembering.

Is a higher ratio always worse?

It is associated with higher risk across populations, which is not the same as a prediction about an individual. Treat it as one indicator among several.

If the waist to hip ratio calculator is not quite what you need, these other free tools solve closely related problems, and there are 19 more in health calculators.

BMI Calculator

Work out BMI from height and weight, in metric or imperial units.

Health Calculators Use tool

Body Fat Calculator

Body fat percentage by the US Navy tape method.

Health Calculators Use tool

Calorie Calculator

Daily calorie needs from BMR and activity level.

Health Calculators Use tool

Checked and rebuilt on 2026-10-14. The method this calculator uses is described in the section above, and corrections go through the contact page.