Unit ConverterConvert between metric and imperial units for length, mass, temperature, area, volume, speed, time, pressure and energy, with a table of every unit at once.
BMI Calculator
BMI is weight divided by height squared. It is a quick screening number for adults, not a diagnosis: it does not account for muscle, body shape, age, sex or ethnicity. Talk to a health professional about what is healthy for you.
For adults (18+) only. BMI is a screening measure, not a diagnosis, and is not suitable for children, pregnancy or very muscular people.
0BMI
0WHO category
0Weight for BMI 18.5–24.9
Runs entirely in your browser. Your input and files are not uploaded to any server.
How to use
- Choose metric or imperial units.
- Enter your height and weight.
- Read your BMI, its WHO category and the matching weight range for your height.
Examples
Metric
170 cm and 65 kg → BMI 22.5 (normal range).
Imperial
5 ft 9 in and 180 lb → BMI 26.6 (overweight range).
Privacy
Runs entirely in your browser. Your input and files are not uploaded to any server. See the privacy policy for what is stored in your browser (favorites and history only). Privacy policy
Check it yourself: open your browser’s developer tools, select the Network tab and use the tool. Your file never appears in an upload request. Once this page is saved for offline use, you can also disconnect from the internet and keep working. Ads and anonymous visit statistics, when enabled, make their own requests, but they never receive your files or text.
Frequently asked questions
Can children use this?
No. Children and teenagers need age- and sex-specific BMI percentiles. This calculator is for adults 18 and over.
Is BMI accurate for athletes or during pregnancy?
No. Muscular people can have a high BMI without excess fat, and BMI is not used during pregnancy.
Is my data stored?
No. Values stay on this page and are not saved or sent.
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