Free Health Calculators

These free health calculators use evidence-based medical formulas: BMI with WHO categories, BMR via Mifflin-St Jeor, calorie targets for any goal, US Navy body fat estimation, ideal weight across four formulas, and pregnancy due dates by Naegele's rule.

BMI Calculator Check your Body Mass Index with metric or imperial units. BMR Calculator Find your Basal Metabolic Rate — calories burned at rest. Calorie Calculator Get daily calorie targets for weight loss, maintenance or gain. Body Fat Calculator Estimate body fat % using the US Navy tape-measure method. Pregnancy Due Date Calculator Estimate your due date from LMP or conception date. Ideal Weight Calculator Find your ideal weight range using 4 medical formulas.

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