BMI Calculator
Calculate your Body Mass Index instantly — enter height and weight (metric or imperial) to see your BMI and healthy weight range.
Free · No sign-up · Runs in your browser — nothing is uploaded
Your BMI
22.5
Healthy weight
Great — maintain it with regular activity.
How to use
- Choose metric (cm/kg) or imperial (ft/lb).
- Enter your height and weight — use the sliders or type exact values.
- Your BMI, category, and a visual gauge appear instantly.
Formula
BMI = weight (kg) ÷ height (m)²
Example
70 kg ÷ (1.75 m)² = 22.9 — healthy weight range.
FAQ
What is a healthy BMI?
18.5–24.9 is the standard healthy range for adults. Below 18.5 is underweight, 25–29.9 overweight, 30+ obese.
Is BMI accurate for everyone?
BMI is a screening tool, not a diagnosis — athletes with high muscle mass may score high without excess fat.
Is my data stored?
No. The calculation runs entirely in your browser; nothing leaves your device.
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