BMI Calculator
A quick, calm view of your body mass index — informational only, never a diagnosis.
Inputs
Result
Your BMI
22.9
Healthy
Visual breakdown
UnderHealthyOverObese
Your value: 22.9
Formula
BMI = weight (kg) ÷ height² (m²). Imperial = (lb ÷ in²) × 703.
Example
175 cm and 70 kg → 70 ÷ 1.75² = 22.9 (Healthy).
Frequently asked
Is BMI accurate for everyone?
No — BMI doesn't distinguish muscle from fat and isn't ideal for athletes, the elderly, or pregnant people. Use it as a rough screen, not a diagnosis.
What's the healthy range?
WHO defines 18.5–24.9 as the healthy range for adults; this varies for children and some populations.
What about waist size or body fat?
Waist-to-height ratio and body-fat percentage are often better health signals than BMI alone — consider tracking those alongside it.
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Informational only — not medical advice. Talk to a clinician for any health decisions.