BMI Calculator

Calculate your Body Mass Index (BMI) in seconds with our free, easy-to-use tool. Supports metric and imperial units.

This tool helps you determine your BMI, a key indicator of health, by using your weight and height. Whether you're tracking fitness goals or monitoring health, our BMI Calculator provides instant results with category insights, supporting both metric (kg, cm) and imperial (lb, in) units.

BMI Calculator

Please enter a valid weight.
Please enter a valid height.

Results

Your results will appear here after calculation

Underweight
<18.5
Normal
18.5–24.9
Overweight
25–29.9
Obese
≥30

Advertisement

How It Works

The Body Mass Index (BMI) is a simple calculation using a person's height and weight. The formula is BMI = weight (kg) / [height (m)]² for metric units, or BMI = [weight (lb) / [height (in)]²] × 703 for imperial units. Our calculator supports both systems for your convenience.

  • Select your preferred unit system (metric or imperial).
  • Enter your weight and height.
  • Optionally select your gender for additional insights.
  • Click "Calculate" to see your BMI and category.

Recommended Fitness Products

Smart Scale

Smart Scale

Track your weight and BMI with this smart scale.

Shop Now
Fitness App

Fitness App

Personalized workout plans and nutrition tracking.

Learn More

Related Tools

Calories Calculator

Estimate your daily calorie needs for fitness goals.

Use Tool

Body Fat Calculator

Calculate your body fat percentage accurately.

Use Tool