Weight & body tools
Free, private tools to understand your weight and body composition — BMI, daily calories, healthy weight range, waist-to-height ratio, body fat and your biological age.
Free · no account needed · private by design
BMI Calculator
Body mass index from your height and weight, with what your result means.
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Calorie Calculator
Daily calories to maintain, lose or gain weight (BMR & TDEE).
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Ideal Weight Calculator
Your healthy weight range for your height.
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Waist-to-Height Ratio Calculator
A quick central-fat health check — often better than BMI alone.
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Body Fat Calculator
Estimate body-fat percentage using the US Navy tape method.
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Biological Age Calculator
See how your lifestyle nudges your body age above or below your real age.
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BMR Calculator
Your basal metabolic rate — calories burned at rest — plus daily burn.
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Macro Calculator
Split your calories into protein, carbs and fat, with a protein target.
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