Body Mass Index is a measure of body fat based on height and weight. BMI = weight(kg) / height(m)². It's a screening tool, not a diagnostic test.

What is a healthy BMI?

18.5 - 24.9 is considered normal weight. BMI may not be accurate for athletes, pregnant women, or elderly individuals.

How is metric BMI calculated?

BMI = weight in kilograms divided by height in meters squared. For 75kg and 175cm: 75 / (1.75 × 1.75) = 24.5.

Calculate your Body Mass Index using kilograms and centimeters.

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Enter your weight and height in metric units.

Your BMI

0.0

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With the default inputs shown below, this calculator returns the following results:

Input	Value
Weight (kg)	75
Height (cm)	175

Result	Value
Your BMI	24.5

Values shown are produced by this page in your browser; change any input to update them.

CDC — Healthy weight & BMI (cdc.gov)
NIST — SI units & conversions (nist.gov)
Every result on this page is computed live by the page's own formula in your browser — no input is sent to a server.
Figures are estimates for educational purposes only and are not financial, tax, or legal advice.