BMI Calculator
Calculate your body mass index and check your weight category
BMI calculation
Enter your weight and height to calculate body mass index
⚖️ What is BMI
Body Mass Index (BMI) shows how your weight relates to your height. It is a quick guide to underweight, normal weight, or overweight.
The calculator takes weight in kilograms and height in centimeters, then maps the result to the WHO international scale.
📐 Formula and categories
BMI = Weight (kg) / (Height (m))²
- Below 18.5 — underweight
- 18.5–24.9 — normal weight
- 25–29.9 — overweight
- 30 and above — obesity
💡 Example
At 70 kg and 175 cm:
BMI = 70 / 1.75² = 70 / 3.06 ≈ 22.9 — normal weight.
✅ Tips
- BMI does not account for muscle mass, age, or fat distribution — athletes may score higher.
- Children, older adults, and pregnant people use different reference ranges.
- For an accurate health assessment, consult a doctor.