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Math & Calculators
Free BMI Calculator — Body Mass Index Online
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Ubify Intelligence Team
EDITORIAL TEAM
~1 min read
~160 words
VERIFIED MAY 2026
About This Tool
The BMI Calculator computes your Body Mass Index from your height and weight — in either metric or imperial units — and shows which WHO health category you fall into (underweight, normal, overweight, or obese). Enter your measurements and get your BMI instantly. Free, no account, runs in browser.
How to Use
- 1
Enter your height and weight in metric (cm/kg) or imperial (ft/in/lb).
- 2
Your BMI value and health category appear instantly.
- 3
Read the range chart to understand how your BMI compares to WHO guidelines.