How it works
BMI Calculator formula
Weight (kg) ÷ height (m)²
Divides body weight in kilograms by height in metres squared.
Everyday calculator
BMI Calculator
Enter height and weight to calculate BMI and view the WHO adult reference range.
STEP 1
Enter your values
RESULT
22.5Body mass index (BMI)
Adult BMI estimate using the WHO reference categories.
Reference normal range18.5~24.9
Reference weight range at this height53.5~72.0kg
Current weight65kg
This is a screening measure, not a diagnosis. Children, adolescents, pregnant people and people with high muscle mass require different assessment.
Example
Example calculation
At 170cm and 65kg, BMI is approximately 22.5.
- Standard
- WHO adult BMI classification
- Last reviewed
- August 16, 2026
Standards and sources
Calculated from official or reliable reference material.
Questions
BMI Calculator FAQ
What should I enter in the BMI Calculator?
Enter the requested values and the result will update immediately. Review the formula, assumptions and exclusions below the result.
Is the result an official amount?
No. It is an estimate based on the entered conditions and stated assumptions. Confirm important tax, insurance, employment or financial decisions with the relevant institution or a qualified professional.
Are Korean rules used?
This calculator uses the general formula or reference source shown on the page.
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