How to use it
- Enter or select the requested values in the tool above.
- Choose the main action button to process the information.
- Review the result and copy or download it when available.
Calculators
BMI Calculator
Calculate body mass index from height and weight.
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Enter your detailsFields are processed on this device
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Your resultReady instantly
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Enter your details to begin.
ABOUT THIS TOOL
What is the BMI Calculator?
Body mass index compares weight with height and is a widely used screening measurement for adults. It does not diagnose health or account for muscle mass, pregnancy or body composition.
How the result is calculated
BMI equals weight in kilograms divided by height in metres squared. General adult categories are under 18.5, 18.5–24.9, 25–29.9 and 30 or higher.
Practical example
A person who weighs 70 kg and is 1.75 m tall has a BMI of about 22.9. Discuss health questions with a qualified professional.
FREQUENTLY ASKED QUESTIONS
BMI Calculator FAQ
Is this tool free to use?
Yes. Tool88 provides this tool without registration, usage limits or payment.
Is my information uploaded or stored?
No. The calculation runs locally in your browser. Tool88 does not receive the values you enter.
Can I use the result professionally?
You can use the result as a helpful estimate or utility output. For financial, health, legal or other high-impact decisions, verify the result with an appropriate qualified professional.