Tools/Calculators/BMI Calculator

BMI Calculator

Calculate your body mass index.

100% on device · 0 uploads

Height (cm):

Weight (kg):

01 · Unlimited

Use it as many times as you want — completely free.

02 · Private

Your files never leave your device; everything runs in your browser.

03 · Fast

Processing happens locally and finishes in seconds.

How to Calculate Your BMI

Enter height and weight

Type your height in centimeters and weight in kilograms.

BMI is computed instantly

The standard formula weight ÷ height² runs in your browser.

Read your category

See your value on the WHO scale from underweight to obesity.

Why Use This BMI Calculator?

✓WHO-standard formula and categories

✓Instant results as you type

✓No data stored or transmitted

✓Free with no sign-up

Frequently Asked Questions

What is BMI exactly?+

Body Mass Index — weight in kilograms divided by height in meters squared. It's the standard screening measure used by WHO and physicians worldwide.

What are the categories?+

Below 18.5 underweight, 18.5–24.9 normal, 25–29.9 overweight, 30+ obesity — per the WHO classification for adults.

What are BMI's limits?+

It doesn't distinguish muscle from fat: athletes can read "overweight" while being lean. Treat it as a screening indicator, not a diagnosis — discuss results with a doctor.

Is my health data stored?+

No — the calculation runs in your browser and nothing is saved or transmitted.