BMI Calculator
Calculate Body Mass Index from height and weight in metric or imperial units.
Enter your height and weight above to calculate your BMI and see its healthy-range category.
Body Mass Index is a simple ratio of weight to height squared, and it makes no distinction between muscle and fat, which is exactly why a heavily muscled athlete can register as overweight by the number alone despite carrying very little actual body fat, a limitation worth remembering rather than treating the result as a precise measurement of body composition. This tool calculates Body Mass Index from height and weight in either metric or imperial units, handling the unit conversion directly rather than requiring measurements converted by hand first.
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Useful for getting a quick general health screening baseline rather than a precise body composition reading, tracking a weight change over time relative to a fixed height, or calculating BMI directly from imperial measurements without converting to metric first.
Key features
- Clean interface
- Fast processing
- No signup required
- Works offline