All calculators
30 free fitness and health calculators, each backed by a real, published formula — not a guess. Browse by category below.
Body Composition & Weight
Category hub →BMI, body fat, ideal weight, lean body mass, waist-to-hip ratio, and healthy weight — measures of what your body is made of.
BMI Calculator
Calculate your Body Mass Index and see where you fall on the WHO weight categories.
Open calculatorBody Fat Calculator
Estimate your body fat percentage with the U.S. Navy tape-measurement method.
Open calculatorIdeal Weight Calculator
See your ideal body weight from four established formulas, side by side.
Open calculatorLean Body Mass Calculator
Estimate your lean body mass from three published formulas.
Open calculatorWaist-to-Hip Ratio Calculator
Find your waist-to-hip ratio and cardiovascular risk category per WHO thresholds.
Open calculatorHealthy Weight Calculator
Find the healthy weight range for your height and how far you are from it.
Open calculatorBody Type Calculator
All seven body shapes from four measurements — with the rule that decided yours shown in full.
Open calculatorEnergy & Nutrition
Category hub →Calorie, BMR, TDEE, macro, protein, and water intake calculators — how much fuel and hydration your body needs.
Calorie Calculator
Find your daily calorie target for maintenance, loss, or gain.
Open calculatorBMR Calculator
Calculate your Basal Metabolic Rate — the energy your body burns at complete rest.
Open calculatorTDEE Calculator
Find your Total Daily Energy Expenditure and compare cut, maintain, and bulk targets.
Open calculatorMacro Calculator
Split your daily calories into protein, carbs, and fat — across five plans, or build your own.
Open calculatorProtein Intake Calculator
Find your daily protein target based on your weight and goal.
Open calculatorWater Intake Calculator
Estimate your daily water intake from weight, exercise, and climate.
Open calculatorCarbohydrate Calculator
Find your daily carbohydrate range, plus the fiber and added-sugar targets that go with it.
Open calculatorFat Intake Calculator
Find your daily fat range, and the saturated-fat ceiling that matters more than the total.
Open calculatorPerformance & Training
Category hub →One-rep max, target heart rate, pace, and calories burned — numbers that guide how you train and move.
One Rep Max Calculator
Estimate your one-rep max and get a full %1RM training table.
Open calculatorTarget Heart Rate Calculator
Find your max heart rate and personalized training zones.
Open calculatorPace Calculator
Calculate running pace, finish time, or distance across three linked modes.
Open calculatorCalories Burned Calculator
Estimate calories burned for 20+ common activities using MET values.
Open calculatorPregnancy & Cycle
Category hub →Due date, conception, ovulation, and pregnancy weight gain calculators — timeline tools for fertility and pregnancy.
Due Date Calculator
Estimate your pregnancy due date from LMP, conception, ultrasound, or IVF transfer.
Open calculatorPregnancy Calculator
Find out how many weeks pregnant you are today, from whichever date you know.
Open calculatorConception Calculator
Estimate the conception date and fertile window from a due date or birth date.
Open calculatorOvulation Calculator
Predict your ovulation date and fertile window for the next three cycles.
Open calculatorPeriod Calculator
Predict your next six periods, fertile windows and ovulation days on a calendar.
Open calculatorMenstrual Cycle Calculator
See which cycle day and phase you are in today, and whether your cycle counts as regular.
Open calculatorPregnancy Weight Gain Calculator
Check whether your pregnancy weight gain is on track with IOM guidelines.
Open calculatorhCG Doubling Time Calculator
Work out the doubling time and 48-hour rise between two quantitative hCG results.
Open calculatorClinical & Lifestyle
Category hub →Kidney function, body surface area, and blood alcohol — measures that come from a lab report or a clinical setting rather than a gym.
GFR Calculator
Estimate your kidney filtration rate from a blood test, using the race-free CKD-EPI 2021 equation.
Open calculatorBody Surface Area Calculator
Calculate your body surface area with eight published formulas, side by side.
Open calculatorBlood Alcohol Calculator
See how alcohol clears your system over time — an educational estimate, never a fitness-to-drive test.
Open calculatorPrinted from mystatura.com — for general information only, not medical advice.