BMI calculator
Calculate BMI (body mass index) using the WHO formula. Check whether you are underweight, normal, overweight or obese. Free BMI calculator.
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Weight and mass converter
Enter a value in any mass unit and the converter instantly shows kilograms, grams, pounds, ounces and all other units.
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How we convert mass
All units convert to kilograms as the base, then to output units: 1 lb = 0.453592 kg, 1 oz = 0.0283495 kg, 1 stone = 6.35029 kg.
Example: 1 kg in different units
1 kg = 1,000 g = 100 dag = 0.001 t = 2.2046 lb = 35.274 oz = 0.1575 stone.
Frequently asked questions
Uses standard SI values. For commercial or legal applications use certified scales.