Precision health tools, zero noise.
Free calculators and supplement data built on clinical evidence and public datasets. No accounts, no paywalls, no agenda.
Guided Plan Wizard
Chain body composition, TDEE, macros, protein timing, hydration, electrolytes, and supplement scheduling into one personalized plan. Print it, share it with a QR code, or save it for later.
Body Composition Tracker
Log your InBody or BIA scans and find out what is actually happening. Real fat loss and muscle rates, target date projections, and nutrition targets from measured lean mass.
HRT Estrogen Conversion
Switching estrogen formulations during the patch shortage? Convert between BiEst cream, patches, gels, and oral with matched progesterone dosing.
Peptide Response Estimator
Project your IGF-1 trajectory on sermorelin or tesamorelin. Population-average projections shown as honest confidence bands.
GLP-1 Response Estimator
See what semaglutide or tirzepatide may do to your weight and A1c over 6 to 18 months, with the real dose titration schedule, not a flat-dose guess.
TRT Protocol Optimizer
See where your testosterone sits throughout the injection cycle. Enter your labs to plot your personal curve, or model a protocol change before committing.
Supplement Timing Optimizer
Check off your full stack and get a daily schedule that stops your supplements from blocking each other, and works around your medications.
TDEE Calculator
Total daily energy expenditure as an honest range, not a fake-precise number. Includes adaptive TDEE measured from your own weight and intake data.
Macro Calculator
Split a calorie target into protein, carbohydrate, and fat. Protein set from lean mass, fat floored for hormone health, with real food portions.
Caffeine Clearance
See how caffeine clears your system based on body weight, dose, and metabolizer status. Find your cutoff time for better sleep.
Fiber Diversity Score
Total fiber grams is the wrong target. Score your prebiotic variety across nine fiber classes and find out which gut bacteria you are starving.
Vitamin D Repletion
Calculate weekly dosing to reach your target 25-OH level based on current labs, body weight, and timeframe.
Electrolyte Needs
Sodium, potassium, and magnesium from your climate, sweat rate, and diet. Includes a sweat rate test and desert heat guidance.
All Calculators
Body fat, protein intake, creatine loading, sleep debt, hydration, and everything else.