Free health tools
Calculate protein, water, calorie needs, weight-loss progress, goal dates, and verified medication unit conversions. No account or paywall.
New GLP-1 toolkit
Protein, fluids, energy, and trend context—calculated without an account and without medication advice.
Turn body weight and training into a practical daily protein range and per-meal target.
HydrationEstimate today's fluid target from body weight, movement, and warm-weather context.
ProgressCalculate percent of starting weight lost, goal progress, and remaining weight.
TrendProject a planning date from your own observed trend—not a drug-average promise.
EnergyEstimate resting and maintenance energy needs with a conservative discussion range.
Start hereCalculate concentration and syringe volume, with a practical step-by-step reconstitution guide.
GLP-1Reconstitution and syringe-unit guidance with current Wegovy maintenance-dose context.
GLP-1 / GIPReconstitution and syringe-unit guidance with current Zepbound maintenance-dose context.
Triple agonistReconstitution and syringe-unit guidance with accurate Phase 2 dose-range context.
Use the number well
The nutrition and progress calculators turn your own inputs into practical estimates for protein, water, calories, weight-loss percentage, and goal timing. Each result explains its formula and assumptions so you can interpret the range, not just copy a number.
The peptide, semaglutide, tirzepatide, and retatrutide tools convert verified vial, liquid-volume, and prescribed-dose values into concentration and syringe volume. They do not choose a medication, recommend a dose, or replace a prescriber or pharmacist.
Use current measurements, check the selected units, and read the context beneath the result. Recalculate when an input changes. If a medication label or prescription is unclear, confirm it with the prescriber or dispensing pharmacy instead of guessing.