CalculynCalories · BMI · Macros · Fitness
Health calculators
Know your body's numbers. 15 free calculators.
Most popular
BMI Calculator
Calculate your body mass index and healthy weight range.
Calorie Calculator
Find out how many calories you should eat each day.
TDEE Calculator
Find your total daily energy expenditure — the calories you burn each day.
Pregnancy Due Date Calculator
Estimate your baby's due date and how far along you are from your last period.
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BMR Calculator
Estimate your basal metabolic rate — the calories your body burns at rest.
Body Fat Calculator
Estimate body fat percentage with the US Navy tape-measure method.
Calories Burned Calculator
Estimate calories burned during exercise and everyday activities.
Ideal Weight Calculator
See ideal body weight ranges from four common formulas and a healthy BMI range.
Macro Calculator
Split your daily calories into protein, carbs and fat grams.
One Rep Max Calculator
Estimate your one-rep max from a weight you can lift for several reps.
Ovulation Calculator
Estimate your ovulation day and most fertile window from your cycle.
Protein Calculator
Find out how much protein you should eat per day.
Running Pace Calculator
Find your running pace per mile and per kilometer from distance and time.
Sleep Calculator
Find the best times to go to bed so you wake up between sleep cycles.
Water Intake Calculator
Estimate how much water to drink each day.