BMI Calculator
Calculate your Body Mass Index (BMI) instantly in your browser, using metric or imperial units.
Enter weight and height to calculate BMI.
How to use this tool
Choose Metric or Imperial units, then enter your weight and height. Your BMI and category update automatically as you type. This tool is for general reference only and isn't medical advice.
FAQ
Is this BMI calculator free to use?
Yes, this tool is completely free to use with no limits on how often you can use it.
Does my data get uploaded anywhere?
No. Your BMI is calculated directly in your browser. Nothing is sent to a server.
Is BMI a medical diagnosis?
No. BMI is a general screening measure based on weight and height — it doesn't account for muscle mass, body composition, age, or sex. This tool is for general reference only, not medical advice. Talk to a healthcare professional for a full assessment of your health.
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