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BMI Calculator

Calculate your Body Mass Index (BMI) instantly. Enter your height and weight to find out if you're underweight, normal, overweight or obese.

How to Use BMI Calculator

Enter your weight

Type your weight in kg or lbs.

Enter your height

Type your height in cm, feet or inches.

Get your BMI

See your BMI score and category instantly.

Frequently Asked Questions

What is BMI?▼

BMI (Body Mass Index) is a measure of body fat based on height and weight. It helps assess if you're at a healthy weight.

What is a healthy BMI?▼

A BMI between 18.5 and 24.9 is considered normal/healthy. Under 18.5 is underweight, 25–29.9 is overweight, and 30+ is obese.

Is BMI accurate?▼

BMI is a useful screening tool but doesn't measure body fat directly. Athletes may have high BMI due to muscle mass.

About BMI Calculator

Calculate your Body Mass Index (BMI) instantly. Enter your height and weight to find out if you're underweight, normal, overweight or obese.

Our BMI Calculator is completely free to use with no registration required. It works directly in your browser on any device — desktop, iPhone, Android, and tablet.bmi calculator, body mass index, calculate bmi — all handled instantly without any software download.

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