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BMI Calculator
Calculate your Body Mass Index and find your healthy weight range — metric or imperial.
✓ Free✓ No Login✓ Metric & Imperial✓ Healthy Range✓ BMI Prime
BMI Categories
Severely Underweight
0 – 16Underweight
16 – 18.5Healthy Weight
18.5 – 25Overweight
25 – 30Obese Class I
30 – 35Obese Class II
35 – 40Obese Class III
40 – 40+⚠️ BMI Limitations
!Does not measure body fat directly
!Overestimates fat in muscular people
!Underestimates fat in elderly people
!Does not account for fat distribution
!Different healthy ranges for children
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📖 How to Use the BMI Calculator
1
Choose Your Units
Select Metric (kg and cm) or Imperial (pounds and feet/inches) — whichever you're most comfortable with.
2
Enter Height & Weight
Type in your current weight and height. The inputs accept decimal values for more precise results.
3
Get Your Results
Click Calculate to see your BMI score, category, BMI Prime and your healthy weight range. The gauge shows where you sit on the full BMI scale.