What does the peptide calculator do?

Enter vial size, BAC water, and desired dose. Get exact syringe units. Works with U-100, U-50, U-40, and U-30 syringes.

Are these tools free?

Yes, all tools are free with no sign-up required. No paywall, no email gate.

Which tool should I start with?

The dosage calculator handles most needs. For your first reconstitution, add the reconstitution calculator.

Do these tools work on mobile?

Yes. Install Peptide Schedule as an app from your browser. All tools work offline too.

How accurate are the calculations?

Every default value comes from published research or FDA labels. You can override any number.

Not medical advice. Talk to your provider before using any peptide.

Full disclaimer

Peptide Tools

One wrong reconstitution calculation means a wasted vial, or worse, a dose that's too high. Peptide Schedule puts 8 free tools in one place: dosage calculators, reconstitution math, a reverse calculator, unit conversion, half-life comparisons, interaction checks, GLP-1 titration schedules, and a protocol planner with calendar export. Three numbers is all the dosage calculator needs. Every default comes from published research or FDA labels.

8 tools150+ peptides100% free

Peptide Schedule Research Team

Dosage Calculators

Peptide Calculator

Peptide Reconstitution Calculator

Enter any vial size and BAC water amount to get concentration (mcg/mL) and syringe units for your desired dose.

Reverse Calculator

New

Already drew your dose? Enter syringe units to find out the actual mcg/mg you injected.

Unit Converter

Convert between micrograms (mcg), milligrams (mg), and International Units (IU) for HGH and other peptides.

Protocol & Scheduling Tools

Protocol Planner

Plan your dosing protocol, view a weekly grid, and export a downloadable .ics calendar file.

GLP-1 Titration Protocols

Pre-built titration schedules for Semaglutide, Tirzepatide, and Retatrutide with week-by-week dose escalation.

Reference Tools

Interaction Checker

New

Check peptide interactions before stacking. See which pairs are synergistic, safe, or should be avoided.

Half-Life Chart

Compare half-lives across all 150+ peptides. Understand dosing frequency requirements at a glance.

Peptide Molecular Icons

Unique icons generated from real amino acid sequences. Each bubble = one amino acid, sized by molecular weight, colored by chemical class. Free SVG downloads.