Peptide and GLP-1 calculators
Every calculator runs in your browser, needs no account, and shows its working. They are educational tools — they do the arithmetic, they never recommend a dose.
Reconstitution
Peptide reconstitution concentration reference
Mix a vial: milligrams plus bacteriostatic water gives the concentration you are actually injecting.
Semaglutide reconstitution calculator
The same calculator, pre-filled with typical Semaglutide numbers.
Tirzepatide reconstitution calculator
The same calculator, pre-filled with typical Tirzepatide numbers.
Dose and syringe units
Peptide dose calculator
Turn a target dose into the exact units to draw, marked on a U-100 or U-40 syringe.
Syringe unit converter
Convert between U-100 and U-40 syringe scales without guessing.
BPC-157 dose calculator
The same calculator, pre-filled with typical BPC-157 numbers.
Retatrutide dose calculator
The same calculator, pre-filled with typical Retatrutide numbers.
Half-life and accumulation
Peptide half-life calculator
Model accumulation, steady state, and clearance for any compound or a custom half-life.
Semaglutide half-life calculator
The same calculator, pre-filled with typical Semaglutide numbers.
Tirzepatide half-life calculator
The same calculator, pre-filled with typical Tirzepatide numbers.
Keep the numbers after you close the tab.
TrackPep saves your vials, doses, and schedule — on web, iOS, and Android, in 16 languages. The free plan covers three active compounds.
These calculators are educational record-keeping aids. They do not diagnose, treat, or recommend doses, and they are not a substitute for advice from a licensed clinician. Half-life values are population estimates from published literature.