BMI Calculator
Calculate your Body Mass Index with metric or imperial units.
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Free Online BMI Calculator
Calculate your Body Mass Index (BMI) instantly with our free online calculator. Supports both metric (kg/cm) and imperial (lbs/ft) units. BMI is a simple measure of body fat based on height and weight that applies to adult men and women.
BMI Categories
- Underweight: BMI less than 18.5
- Normal weight: BMI 18.5–24.9
- Overweight: BMI 25–29.9
- Obese: BMI 30 or greater
Frequently Asked Questions
What is BMI?
BMI (Body Mass Index) is a measure of body fat based on your height and weight. It's calculated as: BMI = weight (kg) / height (m)².
Is BMI accurate for athletes?
BMI may overestimate body fat in athletes and muscular individuals, as it doesn't distinguish between muscle and fat mass. For a more accurate assessment, consider body fat percentage measurements.
What is a healthy BMI range?
A BMI between 18.5 and 24.9 is generally considered healthy for adults. However, individual health depends on many factors beyond BMI.