CalcInfinity
7 calculators

Health Calculators

Calculate your BMI, calories, body fat, ideal weight, hydration, and more with evidence-based health calculators. Most share the same height, weight, and activity inputs, so entering your details once carries over.

All Health Calculators

BMI Calculator
Health
Calculate Body Mass Index and see your healthy weight range.
Calorie Calculator
Health
Calculate your daily maintenance calories and calorie targets for weight loss or gain.
BMR Calculator
Health
Calculate your Basal Metabolic Rate using the Mifflin-St Jeor, Harris-Benedict, and Katch-McArdle formulas.
Water Intake Calculator
Health
Calculate how much water you should drink daily based on your weight and activity level.
Ideal Weight Calculator
Health
Estimate your ideal body weight from your height and sex, compared across four established formulas.
Body Fat Calculator
Health
Estimate your body fat percentage and category using the U.S. Navy circumference method.
Pregnancy Due Date Calculator
Health
Estimate your due date and current trimester from your last period, conception date, or IVF transfer date.

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