Free tool

BMI calculator

Work out your body mass index (BMI) from your height and weight, see your category and the healthy weight range for your height.
Your BMI
25.7

Overweight

A healthy weight for 165 cm is about 50.4–67.8 kg. A waist under 83 cm is a good extra sign.

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What BMI tells you

BMI is your weight in kilograms divided by your height in metres squared. Adults with a BMI from 18.5 to 24.9 are in the range linked with the lowest health risk for most people.

What it misses

BMI can't tell muscle from fat or show where fat sits. Very muscular people can read high, and belly fat carries more risk than BMI shows. A useful extra check: keep your waist under half your height.

This is general nutrition information, not medical advice. Numbers are estimates that vary by recipe and portion. If you are managing a health condition, talk to your doctor or a dietitian before changing your diet.

Questions people ask

What is a healthy BMI?

For most adults, 18.5 to 24.9. Below 18.5 is underweight, 25 to 29.9 is overweight and 30 or more is obese.

Is BMI accurate for everyone?

No. It's a quick screening number. It doesn't apply to children or pregnancy, and it can over-read for muscular builds. Your doctor can give a fuller picture.

How do I calculate BMI?

Divide your weight in kg by your height in metres, squared. For example, 70 kg at 1.70 m is 70 ÷ (1.70 × 1.70) = 24.2.

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