BMI Calculator

Calculate your Body Mass Index (BMI) instantly with our free BMI calculator. Choose between metric (kg/cm) or imperial (lbs/inches) units. Simply select your unit system and enter your height and weight to get your BMI score and understand what it means for your health. BMI is a widely used screening tool that provides a reliable indicator of body fatness for most people.

How do I calculate my BMI?

To calculate your BMI, divide your weight in kilograms by your height in meters squared. Use our free calculator for instant results.

BMI Calculator Calculator

Enter Your Values

Your weight in pounds

Your weight in kilograms

Your height in centimeters

Your age in years

Used for health risk calculations

How to Use the BMI Calculator

1

Select your preferred unit system (Metric or Imperial)

2

For Metric: Enter weight in kg and height in cm

3

For Imperial: Enter weight in lbs and height in total inches (e.g., 5 feet 7 inches = 67 inches)

4

Click Calculate to see your BMI result instantly

5

Review your BMI category to understand your health status

Benefits of Using Our BMI Calculator

Support for both metric and imperial units
Automatic unit conversion for accurate results
Instant calculation with no waiting time
Accurate BMI results based on WHO standards
Clear category classification for easy understanding
Free to use with unlimited calculations
Mobile-friendly design for on-the-go calculations
No registration or personal data required
Helpful for tracking weight loss or gain progress
Suitable for adults aged 18 and over

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BMI Calculator FAQ

What is BMI?

BMI (Body Mass Index) is a measure of body fat based on height and weight that applies to adult men and women. It is calculated by dividing your weight in kilograms by your height in meters squared.

How do I convert feet and inches to total inches?

Multiply feet by 12 and add the inches. For example: 5 feet 7 inches = (5 × 12) + 7 = 67 inches total.

Can I use both metric and imperial units?

Yes! Select Metric to enter weight in kg and height in cm, or select Imperial to enter weight in lbs and height in total inches.

Is BMI accurate for everyone?

BMI is a useful screening tool for most adults, but it may not be accurate for athletes with high muscle mass, elderly people, or children. It does not directly measure body fat percentage.

What is a healthy BMI range?

A healthy BMI range for adults is typically between 18.5 and 24.9. Below 18.5 is considered underweight, 25-29.9 is overweight, and 30 or above is obese.