Free Health & Fitness Calculators
Track your weight loss, build muscle, and optimize your longevity. Use our medically accurate tools to find your body's baseline.
BMI Calculator
Check your Body Mass Index and find your healthy weight range.
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Body Fat %
Estimate your body fat percentage and lean muscle mass accurately.
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Ideal Weight
Discover the healthiest weight range for your height and frame size.
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Waist-to-Hip Ratio
Assess your heart health and body shape risk (Apple vs Pear).
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Body Shape
Find out if you are an Hourglass, Pear, Apple, or Rectangle shape.
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Lean Body Mass
Calculate exactly how much muscle and bone weight you carry.
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TDEE Calculator
Calculate your Total Daily Energy Expenditure to lose or gain weight.
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BMR Calculator
Find your Basal Metabolic Rate (calories burned at complete rest).
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Macro Calculator
Create a custom diet plan: Protein, Carbs, and Fats daily targets.
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Protein Intake
Find out exactly how much protein you need for muscle growth.
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Steps to Calories
Convert your daily step count into total calories burned.
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Activity Burn
Calculate energy used for swimming, cycling, lifting, and chores.
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Running Pace
Calculate splits for your next 5k, 10k, Half, or Full Marathon.
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VO2 Max Calc
Estimate your cardiovascular fitness level without a lab test.
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Heart Rate Zones
Find your target heart rate zones for Fat Burn and Cardio training.
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1-Rep Max
Estimate your maximum strength safely for any lift.
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Bench Press Calc
Check your Bench strength level (Beginner vs Elite) and max.
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Wilks Score
Compare strength against other lifters regardless of body weight.
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Water Intake
Find your daily hydration goal based on weight and activity.
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Caffeine Limit
Check if you are drinking too much coffee or energy drinks.
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Alcohol Calories
Track units and empty calories in beer, wine, and spirits.
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Smoking Cost
See how much money you will save by quitting smoking today.
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Sleep Debt
Calculate how much sleep you owe your body to recover.
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Due Date Calc
Estimate your baby's arrival date and trimester milestones.
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Ovulation Calc
Find your most fertile days to increase chances of conception.
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ABSI Calculator
A Body Shape Index: A smarter alternative to standard BMI.
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Maintenance Calories
The exact daily calories needed to keep your weight stable.
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Weight Gain
A caloric surplus plan for building mass and healthy weight.
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Blood Sugar
Convert between mg/dL and mmol/L glucose readings.
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Keto Calculator
Find your strict Carb limits to stay in Ketosis fat-burning mode.
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Cholesterol Ratio
Check your HDL/LDL ratio to assess heart disease risk.
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BAC Calculator
Estimate your Blood Alcohol Content based on drinks consumed.
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Blood Pressure
Analyze your readings (Systolic/Diastolic) for hypertension.
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Daily Fiber
Check if you are getting enough fiber for gut health.
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Creatine Dosage
Calculate loading and maintenance phases for creatine intake.
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Fasting Timer
Calculate your eating window for 16:8 or 18:6 intermittent fasting.
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Calorie Deficit
The specific number of calories to cut to lose weight safely.
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Running Cadence
Optimize your steps per minute (SPM) for faster, safer running.
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Army Body Fat
Official 2025 Tape Test for Army Body Composition compliance.
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Child Height
Predict how tall your child will be based on genetics.
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