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Tools · Body Mass

Body Mass Calculator

Enter your weight and height to get your body mass index (BMI) instantly. The calculator also shows the healthy weight range for your height so you can track progress over time.

Calculate instantly

We use the standard metric formula BMI = weight ÷ (height in meters)2. Height is converted from centimetres automatically.

Result summary

BMI is a simple indicator of body mass relative to height.

Instant · private

Your BMI

0.0

Weight status

Healthy weight

Healthy range

— kg

Enter your details to see the healthy weight that matches your build.

How to use BMI

  • Use a calibrated scale and stand upright against a wall for the most accurate height reading.
  • If you know your body fat percentage, compare it with BMI to get a fuller picture of your health.
  • The ranges are designed for adults. Children and teens should follow their healthcare provider’s guidance.