Know your Body Mass Index
Enter your height and weight — your BMI and healthy range appear instantly.
Healthy weight for your height: –
What is BMI?
BMI (Body Mass Index) = weight (kg) ÷ height² (m). It is a quick screening measure used worldwide:
- Below 18.5 — underweight
- 18.5–24.9 — healthy range
- 25–29.9 — overweight
- 30 and above — obese
BMI does not distinguish muscle from fat — athletes may score high while being very fit. Use it as a rough guide, not a diagnosis.
FAQ
How is BMI calculated?
BMI = weight in kilograms divided by height in meters squared. For example, 70 kg ÷ (1.75 m)² = 22.9.
What is a healthy BMI?
For most adults, 18.5 to 24.9 is considered the healthy range.
Is BMI accurate?
It is a useful screening tool but imperfect: it can't tell muscle from fat, and healthy ranges differ for children, the elderly and some ethnicities.
What is my ideal weight?
Enter your height and this calculator shows the weight range that keeps your BMI between 18.5 and 24.9.