Fitness & Health Calculators
Explore 40+ expert-built tools across body composition, fitness, nutrition, pregnancy, and recovery — all in one place.
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- Clinically Validated
- Always Free
Body & Composition
BMI Calculator
Calculate your Body Mass Index and find your ideal weight range.
Body Fat Calculator
Estimate your body fat percentage using common formulas.
Ideal Weight Calculator
Find your healthy weight based on height and gender.
Ponderal Index Calculator
Compare your body shape relative to height for better insights.
Body Type Calculator
Determine your body somatotype: ectomorph, mesomorph, or endomorph.
Waist-to-Hip Ratio
Assess your health risk by waist-to-hip ratio measurement.
Fitness & Performance
BMR Calculator
Calculate your Basal Metabolic Rate — calories burned at rest.
TDEE Calculator
Find your Total Daily Energy Expenditure for maintaining or losing weight.
VO₂ Max Calculator
Estimate your aerobic fitness level using VO₂ max formulas.
VO₂ Reserve Calculator
Calculate your VO₂ reserve for endurance training intensity.
One Rep Max Calculator
Estimate the maximum weight you can lift for one repetition.
Calories Burned
Estimate calories burned during different exercises and activities.
Max Heart Rate
Find your maximum safe heart rate during exercise.
Heart Rate Zones
Identify your cardio training and fat-burning heart rate zones.
Nutrition & Diet
Calorie Calculator
Determine your daily calorie needs to maintain or lose weight.
Macro Calculator
Balance your daily carbs, protein, and fats for your goals.
Protein Intake Calculator
Get personalized protein intake targets per day.
Carbohydrate Calculator
Determine ideal carb intake for weight control or performance.
Fat Intake Calculator
Find how much healthy fat you should consume daily.
Pregnancy & Parenting
Health & Recovery
Sleep Debt Calculator
Track sleep loss and recovery based on your ideal sleep time.
Sleep Time Calculator
Find the best time to sleep and wake up feeling refreshed.
Sleep Quality Index
Assess how well you’re resting and recovering using the PSQI method.
Metabolic Age Calculator
Compare your metabolism to your biological age.