How many units is 2 mg of retatrutide?

At 10 mg/mL, which is a 20 mg vial in 2 mL or a 10 mg vial in 1 mL, 2 mg is 20 units on a U-100 syringe. At 5 mg/mL it is 40 units.

What water volume should I use?

Whichever one puts your dose on a round number of units. For most retatrutide and tirzepatide vials that means mixing to 10 mg/mL, because then units is just the dose in mg times ten.

Yes. Each chart has a download link for the full-size 1000 x 1500 image, which prints cleanly on a portrait A4 or Letter page.

Printable peptide dosing charts

Retatrutide, tirzepatide, semaglutide and the research peptides, each on one page, converted from vial strength and water volume into the mark to draw to.

Four one-page charts you can save to your phone, pin, or print and tape to the fridge. Each one turns a vial strength and a bacteriostatic water volume into the exact mark to draw to on a U-100 insulin syringe. They are static, so they cover the common setups; for any other combination the calculators do it live.

Retatrutide dosing chart

Tirzepatide dosage chart

Semaglutide mixing chart

Peptide reconstitution chart

How to read any of them

Work out your concentration first: vial mg divided by the mL of bacteriostatic water you added. That is the column. Find your dose down the side. The cell is the number of units to draw. It works because a U-100 syringe holds 100 units in 1 mL, so a unit is always 0.01 mL no matter what is dissolved in it. Write the water volume on the vial in marker when you mix it, because the chart is useless a week later if you cannot remember which column you were in.

Printing: the images are 1000 x 1500, which fits a portrait A4 or Letter page with room to spare. Use the download link under each chart rather than printing this page, so you get the full resolution.

Peptulator, peptulator.com. Research use only, not medical advice.

The Protocol Pack, free

25 printable pages: dosing cards for the twelve most-used compounds at three water volumes, titration planners, a vial log, and five pages on what to do when it has already gone wrong.

Common questions

How many units is 2 mg of retatrutide?: At 10 mg/mL, which is a 20 mg vial in 2 mL or a 10 mg vial in 1 mL, 2 mg is 20 units on a U-100 syringe. At 5 mg/mL it is 40 units.
What water volume should I use?: Whichever one puts your dose on a round number of units. For most retatrutide and tirzepatide vials that means mixing to 10 mg/mL, because then units is just the dose in mg times ten.
Can I print these?: Yes. Each chart has a download link for the full-size 1000 x 1500 image, which prints cleanly on a portrait A4 or Letter page.

Where to buyWhat to check before you order Vendor scorecardRanked vendors, at Peptide Bureau Build a full protocolThe stack builder at Peptide Bureau, about two minutes

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
Printable dosing charts (this page)

Tools

Peptide calculator The general tool, any compound
Reconstitution calculator How much water to add, and why it matters
mg to units calculator Both directions, any concentration
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
Where to buy Vendor notes and what to check first
1 mg to units on an insulin syringe The conversion table for every common concentration

Before you use these numbers This is a unit-conversion tool. It turns a vial strength and a water volume into a concentration, a draw volume and a syringe mark. It does not tell you what to take, whether to take it, or whether a compound is safe for you. Most compounds listed are sold for laboratory research and are not approved for human use. Nothing here is medical advice. Dosing decisions belong with a licensed clinician who knows your history. Always check the strength printed on your own vial rather than trusting a preset.