Fitness & Health
Calculate your macros, body fat, sleep cycles, and more to optimize your health.
Body Fat
Estimate your body fat percentage using the U.S. Navy method with just a few measurements.
CalculatorTDEE Calculator
Calculate your Total Daily Energy Expenditure and get calorie targets for your goals.
CalculatorSleep Cycle
Calculate the best times to wake up or go to sleep based on 90-minute sleep cycles.
CalculatorMacro Calculator
Calculate your daily protein, carb, and fat needs based on your goals and body stats.
CalculatorCompound Interest
See how your money grows over time with compound interest and regular contributions.
Calculator1RM Calculator
Calculate your one-rep max for any lift based on your current reps and weight.
CalculatorCaffeine Cutoff
Calculate your caffeine half-life curve and find the best time to stop drinking coffee.
CalculatorZone 2 HR
Calculate your Zone 2 heart rate range for optimal fat-burning cardio.
CalculatorCreatine Dosage
Calculate your ideal creatine loading and maintenance dose based on body weight.
CalculatorPlate Loading
Calculate which plates to load on each side of the barbell for any weight.
CalculatorBRI Calculator
Calculate your Body Roundness Index (BRI) with visual explanation and health context.
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