BMI Calculator
Your body mass index and the healthy-weight range for your height.
BMI
24.7
Normal weight- Healthy weight59.9–80.7 kg
Body Mass Index (BMI) is a quick screening number relating weight to height. It's not a measure of body composition, but it's a useful population-level reference and shows the healthy-weight range for your height.
How it's calculated
Enter your height and weight. The result places you in a WHO category — underweight (<18.5), normal (18.5–24.9), overweight (25–29.9) or obese (≥30) — and shows the weight range that keeps you in the healthy band.
BMI = weight(kg) / height(m)²
How to read your result
BMI doesn't distinguish muscle from fat, so muscular lifters can read 'overweight' while lean. Use it as a rough guide alongside body-fat percentage and waist measurements, not as a verdict.
Frequently asked questions
- Is BMI accurate for athletes?
- Not reliably — muscle is dense, so trained lifters often score 'overweight' despite being lean. Pair BMI with body-fat % for a fuller picture.
- What's a healthy BMI?
- The WHO healthy range is 18.5–24.9. The calculator converts that into a weight range for your specific height.
- Does BMI differ by sex or age?
- The standard adult formula doesn't adjust for sex or age. Those factors matter for interpretation, which is why body composition is a better individual metric.