Optimize Your Human Biology
Scientific precision for your body. Calculate dosage, metabolism, and nutrient needs with clinical accuracy.
Vitamin D Calculator
Estimate your sun exposure needs to reach optimal Vitamin D levels based on skin type and latitude.
Magnesium Intake Estimator
Check your Magnesium intake and find your daily requirement to reduce anxiety and improve sleep.
Iron Needs Calculator
Especially important for female athletes. Calculate your daily iron requirement to prevent anemia.
Electrolyte Loss Calculator
Estimate how much Sodium, Potassium, and Magnesium you lose during intense sweating.
Alcohol Metabolism Calculator
Predict how long until you are sober. "Zero to Hero" timeline based on drinks consumed.
Empty Calories from Alcohol
See the damage. Convert your night out into "Slices of Pizza" or "Miles to Run".
Caffeine Half-Life Calculator
Find out when your coffee leaves your system so you can sleep.
Melatonin Timing Calculator
Calculate the optimal time to take Melatonin for jet lag or sleep onset.
Sleep Cycle & Recovery
Find your optimal bedtime or wake-up time based on 90-minute REM sleep cycles.
Pregnancy Nutrient Needs
Calculate your trimester-specific nutrient requirements (Folate, Iron, Calcium) for a healthy baby.
Creatine Loading Calculator
Calculate your optimal creatine loading phase dosage. Maximize muscle saturation in 5-7 days.
Caffeine Pre-Workout Calculator
Determine your ideal caffeine dosage for peak athletic performance without the jitters.
Free Macro Meal Plan Generator
Generate a personalized daily meal plan based on your calories and macro goals (Keto, Vegan, High Protein).
Protein Intake for Muscle Gain
Calculate the exact protein needed to maximize muscle hypertrophy based on your weight.
Collagen Dosage for Joints
Find the effective therapeutic dose of collagen peptides for joint repair and skin health.
Keto Macro Calculator
Get your precise ketogenic macronutrient split: 75% Fat, 20% Protein, 5% Carbs.
Intermittent Fasting Window
Plan your eating and fasting windows (16:8, 18:6, 20:4) for optimal autophagy and fat loss.
Paleo Diet Macros
Calculate your macro split for the "Caveman Diet" - high protein, moderate fat, low processed carbs.
Zone Diet Blocks Calculator
Calculate your daily "Zone Blocks" for hormonal balance (40% Carbs, 30% Protein, 30% Fat).
Running Pace Calculator
Calculate your finish times for popular race distances (5K, 10K, Marathon) based on your pace.
Marathon Race Predictor
Predict your marathon time based on a recent race result (5K, 10K, Half) using the Riegel formula.
Heart Rate Zone Calculator
Calculate your 5 training zones based on Max Heart Rate or Heart Rate Reserve (Karvonen).
VO2 Max Estimator
Estimate your cardiovascular fitness (VO2 Max) using the Cooper Test (12-minute run).
Natural Muscular Potential
Predict your maximum drug-free muscle size (FFMI) based on your wrist and ankle bone structure.
Cycling Power Zones (7-Zone)
Calculate your training zones (Recovery, Tempo, Sweet Spot, VO2 Max) based on your FTP.
One Rep Max Calculator
Estimate your 1RM for Squat, Bench, and Deadlift without testing to failure.
Bike Gear Ratio Calculator
Calculate gear inches and development meters to optimize your cycling cadence and spread.
Recovery Needs Estimator
Estimate how many hours of recovery you need based on workout intensity and sleep quality.