About Peptulator

Who publishes it

Peptulator is published by the team behind Peptide Bureau, a separate site that writes dosing guides and evidence reviews for research peptides. The two are sister sites. Peptulator does the maths; Peptide Bureau does the reading.

What it is

A free reconstitution and syringe-unit calculator. You enter the vial strength, the bacteriostatic water you added and the dose, and it returns the concentration, the draw volume and the mark on an insulin syringe, in both directions. There is no signup and nothing to install.

The formulas are public. The methodology page lists every formula, unit assumption, rounding rule and warning threshold, so any answer can be checked by hand. The tables on every page are generated from the same engine the calculator runs, and an automated test suite runs before each deploy.

Independence and funding

Peptulator sells nothing and is not owned by a vendor. It carries no ads, and since 25 September 2026 it carries no vendor or affiliate links. Peptide Bureau, the sister site, earns from affiliate links on its own pages; links from here to Peptide Bureau lead to that separate site, which has its own policies.

The same team also runs VialHaus, a shop for vial storage cases and coolers that ships in the US. Storage notes on the calculator pages link to it, and that is the only commercial link on this site. It sells no peptides.

Review

The compound presets (vial sizes, water volumes, reported dose ranges and half-lives) were last reviewed on 3 September 2026. They are starting points for the maths, not recommendations.

Contact

Corrections, a missing compound preset, or a question about embedding the calculator: [email protected]. The inbox is read by the team.

Research use only

Most compounds listed here are sold for laboratory research and are not approved for human use. Peptulator is a unit-conversion tool: it does not tell anyone what to take, whether to take it, or whether a compound is safe. Nothing on this site is medical advice. See the disclaimer.

All calculators and charts

Weight management (GLP-1 family)

• Retatrutide calculator Vial, water and weekly dose to syringe units
• Tirzepatide calculator The 2.5 to 15 mg ladder, converted
• Semaglutide calculator The 0.25 to 2.4 mg ladder, converted
• Cagrilintide calculator Amylin analogue, 0.3 to 4.5 mg weekly

Growth hormone axis

• HGH (somatropin) calculator IU vials to syringe units
• Ipamorelin calculator mcg doses, in mL and units
• CJC-1295 (no DAC) calculator No-DAC and DAC, mcg to units
• CJC-1295 / Ipamorelin blend calculator The 5 mg + 5 mg blend, per component
• Sermorelin calculator Nightly mcg doses to units
• Tesamorelin calculator 1 to 2 mg daily, in units
• Hexarelin calculator mcg doses to units
• IGF-1 LR3 calculator Tens of mcg from very small vials
• AOD-9604 calculator 300 mcg daily, in units
• MOTS-c calculator 5 to 10 mg, two or three times a week

Repair, skin and blends

• BPC-157 calculator mcg doses from a 5 or 10 mg vial
• TB-500 calculator Loading and maintenance, in units
• BPC-157 / TB-500 blend calculator The Wolverine stack, per component
• GHK-Cu calculator 50 to 200 mg vials, mg doses
• GLOW blend calculator The 70 mg blend, split per component
• KLOW blend calculator The 80 mg blend, split per component

Other compounds

• PT-141 calculator 0.5 to 2 mg, as needed
• Melanotan II calculator mcg loading doses to units
• NAD+ calculator 100 to 1,000 mg vials, 25 to 200 mg doses
• Thymosin alpha-1 calculator 1.6 mg twice weekly, in units
• Epitalon calculator Short courses of 5 to 10 mg
• Kisspeptin-10 calculator mcg doses to units
• Glutathione calculator Hundreds of mg, or a 200 mg/mL solution

Dosage charts and schedules

• Peptide reconstitution chart Concentration for every vial and water combination
• Peptide dosing chart Printable unit tables for every compound
• Retatrutide titration schedule 2 to 12 mg in units, stage by stage
• Tirzepatide titration schedule 2.5 to 15 mg in units, stage by stage
• Semaglutide titration schedule 0.25 to 2.4 mg in units, stage by stage
• KLOW dosage and frequency chart The 80 mg blend at 2, 3 and 4 mL, both phases
• GLOW dosage chart The 70 mg blend, units to each peptide
• Wolverine stack dosing chart BPC-157 + TB-500, blend and separate vials
• MOTS-c dosage chart 5 and 10 mg vials at three water volumes
• Tirzepatide reconstitution chart Every vial size, every water volume, the whole ladder
• Retatrutide dosing chart 1 to 12 mg across 10, 20 and 30 mg vials
• Tirzepatide units to mg chart Both directions, every vial and water volume
• Semaglutide units to mg chart The dosage chart in units, both directions
• NAD+ injection dosage chart Per day, per week and frequency, 100 to 1,000 mg vials
• Tesamorelin dosage chart 2, 5 and 10 mg vials, 0.5 to 2 mg in units
• BPC-157 dosage chart mcg doses from 5 and 10 mg vials, four water volumes
• PT-141 dosage chart The 10 mg vial, 0.5 to 2 mg, with uses per vial
• Sermorelin dosage chart Nightly mcg doses from 5, 10 and 15 mg vials
• Printable dosing charts Four one-page charts to save, pin or print
• Peptide storage chart How long powder and mixed vials last, fridge to freezer

Tools

• Peptide calculator The general tool, any compound
• Reconstitution calculator How much water to add, and why it matters
• Bacteriostatic water calculator Pick a volume that lands where you can read it
• How to read an insulin syringe U-100 vs U-40, and the 2.5x error
• The Protocol Pack Free 25-page printable reference
• mg to units calculator Both directions, any concentration, with the reference tables
• 1 mg to units on an insulin syringe The conversion table for every common concentration
• Units to mg calculator The mark you drew, back into milligrams
• 2 mg to units on an insulin syringe 2 mg at every common vial and water volume
• 2.5 mg to units on an insulin syringe 2.5 mg at every common vial and water volume
• 5 mg to units on an insulin syringe 5 mg at every common vial and water volume
• 10 mg to units on an insulin syringe 10 mg at every common vial and water volume
• 12 mg to units on an insulin syringe 12 mg at every common vial and water volume
• 15 mg to units on an insulin syringe 15 mg at every common vial and water volume
• Methodology Every formula, assumption and rounding rule
• About Peptulator (this page)
• Embed the calculator One line of HTML, free, credit line only