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Free peptide calculators
Accurate, no-nonsense tools for reconstitution and dosing — free, no account, no email. The same math that powers PepVault, the peptide tracker.
The Lab.
Lab · Dose Guide
Dose Guide.
Each peptide’s range, and the units on your syringe.
Open the guide
Lab · Injection guide
Injection Guide.
See where the needle goes, layer by layer.
Open the guide
Lab · Tier list
Tier list maker.
Rank the peptides you rate. Share the picture.
Make yours
Lab · Reconstitution
Reconstitution Lab.
Mix your vial. Draw the exact units.
Open the Reconstitution Lab
Lab · Peptide Sky
Peptide Sky.
53 peptides as stars. Fly into a molecule.
Fly in
Calculators.
Tool · Calculator
Reconstitution calculator.
Enter your vial, water and dose for the exact units to draw, the concentration, the doses per vial and the best water for a clean syringe mark.
Open the calculatorTool · Calculator
Reverse reconstitution calculator.
Already mixed and drew some units? Work backwards from your vial, water and units to exactly what dose that draw is, in mcg and mg.
Open the calculatorTool · Calculator
Half-life & active-level calculator.
See how a compound builds to steady state at your dose and schedule — estimated active level over time, peak and trough.
Open the calculatorTool · Calculator
GLP-1 titration schedule planner.
The standard dose-escalation ramps for semaglutide, tirzepatide, and retatrutide — week by week, at the pace you choose.
Open the plannerTool · Calculator
Dose & unit converter.
Convert a peptide dose between mcg, mg, and IU — and see which unit each kind of compound is measured in.
Open the converter
Library
Peptide reference libraryReference guides for 69 compounds: dose ranges, safety notes and stacks, with half-lives and reconstitution examples where they apply.
Questions, answered.
- How long will my vial last?The doses in your vial at your dose, the days they cover at your schedule, and the date of the last one.
- I missed my GLP-1 dose. Now what?The Ozempic, Wegovy, Mounjaro and Zepbound labels’ own missed-dose rules, quoted, and which case your dates fall in.
- Is my mixed peptide vial still good?The days since you mixed it, against the CDC’s 28-day limit for an opened multi-dose vial.
- How much protein on a GLP-1?A daily protein range for your weight, from the 2025 joint advisory on nutrition for GLP-1 users.
- GLP-1 weight loss by week: where should I be?The trials’ average weight lost, week by week, drawn from your own starting weight.
PepVault for iPhone
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