BMI Calculator

Calculate Body Mass Index

How to use

1. Enter your height and weight.
2. Your BMI is calculated instantly.
3. See which standard category it falls into.

Why use this tool

• Metric & imperial: Enter height and weight in the units you prefer.
• Instant result: See your BMI and its category right away.
• 100% private: Everything runs in your browser. Your data is never uploaded to a server, so it's safe for confidential content.

Frequently asked questions

How is BMI calculated?

BMI is your weight in kilograms divided by your height in metres squared (kg/m²). The tool handles imperial units too.

Is BMI a perfect health measure?

No. BMI is a rough screening tool — it doesn't account for muscle mass or body composition, so treat it as a general guide.

Is my data private?

Yes. The calculation runs in your browser; nothing is saved.

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