A free online BMI calculator. Enter your height and weight to calculate Body Mass Index. Supports both metric (cm/kg) and imperial (ft/lb) units. Shows BMI category (underweight, normal, overweight, obese) and healthy weight range.
Choose metric or imperial units.
Enter your height and weight.
View your BMI value and category.
Check your healthy weight range.
A BMI between 18.5 and 24.9 is considered healthy. Below 18.5 is underweight, 25-29.9 is overweight, and 30 or above is obese.
BMI does not distinguish between muscle and fat. Very muscular individuals may have a high BMI but low body fat. BMI is a screening tool, not a diagnostic measure.
Free online tool — works in your browser, no sign-up required. Start using it right now.
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