BMI Calculator

All tools

Calculate your Body Mass Index from height and weight, see your category and the healthy weight range for your height. Metric or imperial, free and instant.

cm
ft
in
kg
Your BMI – kg/m²
Category –
Healthy weight range –
BMI is body weight in kilograms divided by height in metres squared. The healthy range corresponds to a BMI of 18.5 to 24.9. BMI is a general screening tool and does not account for muscle mass or body composition.
Related Tools
BMR Calculator

Estimate your Basal Metabolic Rate — the calories your body burns at rest — using the accurate Mifflin-St Jeor equation. Metric or imperial, free and instant.
Calorie & TDEE Calculator

Find your Total Daily Energy Expenditure and maintenance calories from the Mifflin-St Jeor BMR and your activity level, plus targets for losing or gaining weight.
Body Fat Calculator

Estimate your body fat percentage with the US Navy tape method from a few simple measurements, plus your fat mass, lean mass and category. Metric or imperial.
Ideal Weight Calculator

Find your ideal body weight from your height and sex using the Devine, Robinson, Miller and Hamwi formulas, plus the healthy weight range from BMI.
Macro Calculator

Split a daily calorie target into protein, carbs and fat. Pick a balanced, low-carb or high-protein preset, or set your own ratios. Free and instant.
Water Intake Calculator

Estimate how much water to drink each day from your body weight, exercise and climate. See the result in liters, ounces, cups and glasses. Free and instant.

Add this free tool to your own website — copy and paste the code below.