Utility

BMI Calculator

Calculate your Body Mass Index (BMI) using metric or imperial units, with WHO category.

Units
cm
100 cm230 cm
kg
20 kg200 kg

Body Mass Index

24.2

Category (WHO)
Normal

What is BMI?

BMI is a screening number — weight divided by height squared. It does not measure body fat directly and can over- or under-state risk for very muscular or very lean people, but for most adults it's a useful first indicator of weight category.

Formula

Metric:    BMI = weight (kg) / height (m)²
Imperial:  BMI = (weight (lb) × 703) / height (in)²

WHO categories:
   < 18.5  Underweight
 18.5-24.9 Normal
 25.0-29.9 Overweight
   ≥ 30.0  Obese

How to use this calculator

Pick your unit system, enter height and weight, and the BMI updates live. Note: South Asians (including Indians) carry higher body fat at the same BMI than Europeans, so Indian health authorities sometimes recommend a stricter "overweight" cut-off of 23.

Frequently asked questions

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