Peptide math, without the guesswork.
Free calculators for reconstitution, dosing, and scheduling - plus a reference library of 161 research peptides. Everything runs in your browser; nothing is stored.
Reconstitution, blends, reverse lookup, GLP-1 schedules, vial duration, half-life.
Structured guides for recovery, metabolic health, longevity, and cognition.
Half-lives, dose ranges, regulatory status, and citations for every compound.
Calculator suite
All local - nothing leaves your browserCommon questions
Worked examples with real numbersHow many units of BPC-157 on a 30-unit syringe?+
A 5 mg vial with 2 mL of bacteriostatic water gives 2.5 mg/mL - 25 mcg per unit on the U-100 scale. A 250 mcg dose is 10 units; 500 mcg is 20 units. The reconstitution calculator handles any vial and volume.
How much water for a 5 mg semaglutide vial?+
Most protocols add 1 mL, giving 5 mg/mL - a 0.25 mg starter dose is 5 units. Adding 2 mL gives 2.5 mg/mL, which spreads small doses across more units and is easier to read on the barrel. Use bacteriostatic (not sterile) water for the 28-day multi-dose window.
Semaglutide vs tirzepatide - what does the data say?+
In trial data, tirzepatide 15 mg reached roughly 21% body-weight loss over 72 weeks versus about 15% for semaglutide 2.4 mg - its dual GLP-1/GIP mechanism is the difference. The GLP-1 scheduler generates escalation timelines for both.
What is the GLOW stack?+
A three-peptide regenerative stack: GHK-Cu (collagen synthesis), BPC-157 (angiogenesis), and TB-500 (cell migration). The KLOW variant adds KPV for inflammation. The blend calculator has preset configurations with exact syringe outputs.