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BMI Calculator

Calculate your Body Mass Index (BMI) using metric or imperial units. See your BMI category and a color-coded scale for context.

Your data never leaves your device
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Frequently Asked Questions

  • What is BMI?

    BMI (Body Mass Index) is a value derived from weight and height. It is calculated as weight (kg) / height (m)². It is used as a general screening tool for weight categories.

  • What are the BMI categories?

    Underweight: below 18.5 | Normal weight: 18.5–24.9 | Overweight: 25–29.9 | Obese: 30 and above. BMI is a screening tool and does not diagnose body fatness or health.