BMI Calculator — Free
Calculate your Body Mass Index (BMI) with metric or imperial units and see your healthy weight range.
kg
cm
22.9
Normal weight
UnderweightNormalOverweightObese
Underweight
0 – 18.5
Normal weight
18.5 – 25
Overweight
25 – 30
Obese
≥ 30
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WHO formula
Uses the standard WHO BMI formula: weight (kg) / height² (m).
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Metric & imperial
Switch between kg/cm and lbs/ft+in without re-entering values.
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Visual gauge
Color-coded gauge shows where your BMI falls across all four ranges.