BMI Calculator

Calculate your Body Mass Index to understand where you fall on the weight spectrum.

Your Measurements

cm

Enter height in centimeters (e.g., 175)

kg

Enter weight in kilograms (e.g., 70)

Common heights:

Your BMI

--

BMI

Enter your height and weight to calculate BMI

Underweight: < 18.5
Normal: 18.5 - 24.9
Overweight: 25 - 29.9
Obese: 30+

Create a free account to track your progress

What is BMI?

Body Mass Index (BMI) is a simple calculation using your height and weight to estimate body fat. While it doesn't directly measure body fat, it's a useful screening tool to identify potential weight-related health risks.

Formula: BMI = weight (kg) / height (m)²

Limitations

BMI doesn't account for muscle mass, bone density, age, sex, or fat distribution. Athletes may have high BMI due to muscle, not fat.

For a complete health picture, consider tracking additional metrics like body fat percentage, waist circumference, and fitness levels.