Health & Fitness Calculators
Explore health and fitness estimates with clear formulas, units, assumptions, and practical explanations.
Choose a calculator below to enter your numbers, see the result, and review the method used.
Browse Health and Fitness Calculators
BMI Calculator
Adult BMI in metric or US units.
Open calculatorHealthCalorie Calculator
Daily calories to maintain, lose or gain.
Open calculatorHealthBody Fat Calculator
Estimate body fat percentage.
Open calculatorHealthBMR Calculator
Calories your body burns at rest.
Open calculatorHealthMacro Calculator
Daily protein, carbs and fat targets.
Open calculatorHealthIdeal Weight Calculator
Ideal weight range by height.
Open calculatorHealthPregnancy Calculator
Track weeks of pregnancy and key dates.
Open calculatorHealthPregnancy Weight Gain Calculator
Healthy weight gain week by week.
Open calculatorHealthPregnancy Conception Calculator
Estimate when conception happened.
Open calculatorHealthDue Date Calculator
Estimated due date from your last period.
Open calculatorHealthPace Calculator
Running pace, time and distance.
Open calculatorHealthArmy Body Fat Calculator
Body fat using the army tape method.
Open calculatorHealthCarbohydrate Calculator
Daily carbohydrate needs.
Open calculatorHealthLean Body Mass Calculator
Your weight minus body fat.
Open calculatorHealthHealthy Weight Calculator
Healthy weight range for your height.
Open calculatorHealthCalories Burned Calculator
Calories burned by activity and time.
Open calculatorHealthOne-Rep Max Calculator
Estimate the most you can lift once.
Open calculatorHealthTarget Heart Rate Calculator
Heart rate zones for training.
Open calculatorHealthProtein Calculator
Daily protein for your goals.
Open calculatorHealthFat Intake Calculator
Daily dietary fat range.
Open calculatorHealthTDEE Calculator
Total calories you burn each day.
Open calculatorHealthOvulation Calculator
Your likely fertile days.
Open calculatorHealthConception Calculator
Likely conception dates.
Open calculatorHealthPeriod Calculator
Predict your next periods.
Open calculatorHealthGFR Calculator
Estimated kidney filtration rate.
Open calculatorHealthBody Type Calculator
Your body shape from measurements.
Open calculatorHealthBody Surface Area Calculator
Body surface area from height and weight.
Open calculatorHealthBAC Calculator
Estimate blood alcohol concentration.
Open calculatorHealthOverweight Calculator
How your weight compares to healthy range.
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