Is BMI enough to judge health?
No. BMI is a screening tool. Pair it with waist measurements, blood work, and a doctor visit for a full picture.
Health
BMI calculator
Switch between metric and imperial units to measure your Body Mass Index and understand how it compares to standard health ranges.
Your BMI
24.22
Normal
How the BMI formula works
BMI = weight (kg) ÷ [height (m)]². Example: 70 kg and 170 cm → 70 ÷ (1.7 × 1.7) = 24.22.
Underweight < 18.5
Normal 18.5 – 24.9
Overweight 25 – 29.9
Obese ≥ 30
BMI FAQs
Can I trust imperial conversions?
Yes. We convert pounds to kilograms using 0.45359237 and inches to centimeters using 2.54 for precise results.
How often should I recalculate BMI?
Monthly or quarterly check-ins are plenty. Track trends rather than obsessing over daily fluctuations.