BMI Calculator
Calculate your BMI in metric or imperial units and see where you fall on the healthy-weight chart. Free BMI calculator with clear category guidance — no signup.
How to use the BMI Calculator
- 1
Choose metric (cm/kg) or imperial (ft-in/lb) units.
- 2
Enter your height and weight.
- 3
Click Calculate to see your BMI and category.
- 4
Read your position on the healthy-range chart.
Frequently asked questions
What is a healthy BMI?
For most adults a BMI between 18.5 and 24.9 is considered a healthy range. BMI is a general screening tool, not a diagnosis.
Does BMI work for everyone?
BMI doesn't distinguish muscle from fat, so very muscular people may read as 'overweight'. Treat it as a rough guide and consult a professional for personal advice.
Is my data private?
Yes — the calculation runs entirely in your browser and nothing is uploaded.
Tips & discussion
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