BMI Calculator
WHO standard health classification
Adult categories use WHO cutoffs (normal 18.5 to under 25). Based on WHO international standards
Quick guide
What can BMI Calculator help you do?
Free BMI calculator with WHO standard classification. Shows category and ideal weight range.
Best for
BMI Calculator is for everyday date, time, health, planning, lookup, and decision tasks that you want to finish quickly on desktop or mobile.
How to use it
For BMI Calculator, enter the date, number, or search condition shown on the page, then choose the location, unit, or mode if the tool provides one.
How to read the result
After using BMI Calculator, use the result for planning or a first estimate. If it affects health, money, legal matters, or official data, compare it with an authoritative source.
Privacy and limits
When using BMI Calculator, most everyday tools run in the browser with no account. If you enter birthdays, addresses, or personal details, provide only what is needed.
For BMI Calculator: Everyday tools are built for convenience and speed. They do not replace professional advice or the latest official information.
Frequently Asked Questions
How is BMI calculated?
BMI = weight (kg) / height (m)². Example: 60 / 1.7² = 20.76.
Is BMI accurate?
BMI doesn't account for muscle mass or body fat percentage. Athletes may be classified as overweight despite being healthy.