Calculators

BMI Calculator

Calculate practical values with BMI Calculator. Free, fast and mobile-friendly. No sign-up required, and calculations or text processing run locally in your browser whenever possible.

Calculate adult BMI from height and weight with WHO classification.

BMI Calculator
UnderweightNormalOverweightObesity IObesity IIObesity III
WHO categoryNormal weight

Adult BMI categories follow WHO cutoffs. BMI is a screening measure, not medical advice.

Body mass index23.671

Normal weight

General adult category: Normal weight.

What is bmi calculator?

Calculate body mass index from height and weight using WHO adult BMI classification. BMI is a screening measure and does not replace medical advice.

How to use bmi calculator

  1. Enter the values required by the BMI Calculator.
  2. Check the instant calculation result.
  3. Copy the result for your notes, quote, invoice or planning task.

When to use bmi calculator

  • Calculate adult BMI
  • Compare metric height and weight
  • Check WHO BMI classification
  • Track simple fitness notes

FAQ

Is BMI a medical diagnosis?
No. BMI is a general screening measure for adults and does not diagnose health, body fat or fitness.
Which BMI categories are used?
The calculator uses WHO adult categories: underweight, normal weight, overweight and obesity classes I, II and III.