Free BMI Calculator
Enter your weight and height in metric or imperial units — BMI updates as you type, with WHO category bands (underweight, normal, overweight, obese class I–III). Pure client-side, no signup, no data leaves your browser.
Normal weight
Within the healthy range for most adults (18.5 ≤ BMI < 25).
Formula: BMI = 70 kg ÷ (1.75 m)².
BMI is a population-level screening tool, not a clinical diagnosis. Talk to a clinician for personalized guidance. Your last inputs persist in this browser's localStorage — clearing site data will erase them.
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