Calculators

BMI calculator

Your BMI in two fields, with the matching band — and the limitation you should know before taking it seriously.

24.5Healthy range

The WHO bands

  • Underweightbelow 18.5
  • Healthy range18.5 to 24.9
  • Overweight25 to 29.9
  • Obese30 and above

BMI cannot tell muscle from fat. A lifter at 12 % body fat often lands in “overweight”: that is the limit of the index, not a mistake in the maths. It is exactly what the scan fixes.

The maths runs in your browser: these values are not sent anywhere.

General, informational benchmarks based on equations validated on the general population (Mifflin-St Jeor for metabolism, WHO thresholds for BMI). Real expenditure varies by roughly 10 % between two people with the same profile. These numbers do not replace a doctor or dietitian.

The guide