Body Mass Index

BMI Calculator

Calculate BMI from height and weight and see the standard BMI category.

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These numbers are estimates for education and planning. For medical conditions, pregnancy, eating disorders, or prescribed diets, consult a qualified professional.

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Formula

BMI = weight in kilograms / height in meters squared.

Best use

BMI is useful for a quick screening estimate, but it does not measure body fat percentage or muscle mass.

Frequently Asked Questions

What is a normal BMI?

A BMI from 18.5 to 24.9 is commonly classified as normal for adults.

Can athletes have high BMI?

Yes. People with higher muscle mass can show a higher BMI without having excess body fat.