BMI Calculator — Body Mass Index
Calculate your BMI instantly. Enter weight and height to get Body Mass Index and health category.
Free
No registration
Instant results
Mobile friendly
< 18.5
Underweight
Underweight
18.5–24.9
Normal weight
Normal weight
25–29.9
Overweight
Overweight
≥ 30
Obese
Obese
How to use
1
Enter value
2
Calculate
3
Copy
Formula & methodology
BMI = weight (kg) ÷ height (m)²
This calculator provides general estimates for informational purposes only and is not medical advice or a diagnosis. Individual needs vary — consult a healthcare professional before making health decisions.
Frequently Asked Questions
Yes, completely free. No registration required.
Yes, fully optimized for all devices.
Results are calculated with high precision.