What does the BMI Calculator work out?

Body mass index with a healthy-range read-out. It is one of the Health & Fitness tools on Mondo Knows.

How is the BMI Calculator calculated?

The maths is short enough to check by hand: BMI = weight (kg) / height (m)^2.

Do I need to sign up, and is my data stored?

No sign-up, and nothing you type is sent anywhere. The calculation runs in your own browser, so the figures stay on your device and the page works offline once loaded.

Mondo Knows Tools

BMI Calculator

Body mass index with a healthy-range read-out. Use the free bmi calculator below to get an instant answer, with the formula shown so you can check the maths and trust the result. Free, private, and no sign-up.

Units

Height

Inches, or centimetres in metric.

Weight

Pounds, or kilograms in metric.

Mondo says

Your BMI

24.4

CategoryHealthy weight

Healthy weight range128.9 lb to 173.5 lb

Healthy BMI18.5 to 24.9

BMI ignores muscle mass and body shape, so treat it as one signal rather than a verdict.

The formula

BMI = weight (kg) / height (m)^2

BMI Calculator: common questions

What does the BMI Calculator work out?: Body mass index with a healthy-range read-out. It is one of the Health & Fitness tools on Mondo Knows.
How is the BMI Calculator calculated?: The maths is short enough to check by hand: BMI = weight (kg) / height (m)^2.
Do I need to sign up, and is my data stored?: No sign-up, and nothing you type is sent anywhere. The calculation runs in your own browser, so the figures stay on your device and the page works offline once loaded.

Mondo also knows

BMR CalculatorBasal metabolic rate, the calories you burn at rest.🌿 Health & Fitness Body Fat CalculatorBody fat percentage from simple tape measurements.🌿 Health & Fitness Ideal Weight CalculatorTarget weight ranges from the common clinical formulas.🌿 Health & Fitness Body Surface Area CalculatorBSA from the Du Bois and Mosteller formulas.🌿 Health & Fitness

Facts that connect to the bmi calculator

Short, sourced facts that point back to this tool.

Human blood vessels could circle the Earth two and a half timesStretching capilliaries arteries and veins end to end totals 100,000 kilometres Human lungs have a surface area roughly equal to a tennis courtMillions of tiny air sacs provide massive surface area for gas exchange

Estimates for general guidance only. This is not financial, medical or legal advice. Everything runs in your browser and nothing you type is stored.