BMI and waist

Is my weight in a healthy range?

Height in

Height

Weight

Sex, for the waist measure

Waist (optional)

Measure around your bare belly, at the level of the navel, after breathing out.

Your answer appears here.

Fill in your height and weight to see your BMI.

Who it is for

Adults aged 18 and over. It is not for children, teenagers under 18, or women who are pregnant.

How it works

BMI is your weight in kilograms divided by your height in metres, squared. Here, below 18.5 is under the healthy range, 18.5 to 22.9 is healthy, 23 to 24.9 is above it, and 25 or more is where health risks are higher. These limits are lower than the older international 25 and 30 because diabetes and heart disease start at a lower BMI in South Asian people.

Belly fat is flagged at a waist of 90 cm or more in men and 80 cm or more in women. BMI does not apply to children, to pregnant women, or to people with a lot of muscle.

A tool cannot know your history and does not replace a doctor who has examined you. If you are worried, or the result surprises you, talk to a doctor.

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