Peptide Reconstitution Calculator
Enter what is in the vial, the water you add, and the amount per draw you were given. You get the units on your syringe snapped to a real mark, the mixing steps, draws per vial, and the run-out and discard dates. It converts an amount you already have; it does not set one.
What is in the vial
The amount printed on the label. The whole vial, not per mL.
Bacteriostatic water you add
Any amount works; it only changes how many units you draw. 2 mL is the most common. Standard vials hold 3 mL at most.
Amount per draw
Enter the amount you were given. The tool converts it; it never suggests one.
Syringe
U-100 insulin syringes. 100 units = 1 mL on all three; the marks differ.
Fill in the vial, the water and the amount per draw to see the result.
How the math works
Concentration equals the vial amount converted to micrograms divided by the water volume in milliliters. The volume you draw equals your target dose divided by that concentration. Multiplying that volume by 100 converts it to units on a U-100 insulin syringe. Doses per vial is the total micrograms in the vial divided by your dose.
Calculators for specific compounds
The same arithmetic, pre-set with the vial sizes and units common for each compound, its half-life from the database and a link to its research profile. Blend vials (KLOW, GLOW, Wolverine, CJC-1295 / Ipamorelin) open in Blend mode.
Growth Hormone
Healing & Recovery
Hormone
Longevity
Metabolic
- Semaglutide
- Tirzepatide
- Retatrutide
- Liraglutide
- Exenatide
- Dulaglutide
- Cagrilintide
- AOD-9604
- HGH Fragment 176-191
- Survodutide
- Mazdutide
- Pramlintide
- Adipotide
- Orforglipron
- Lixisenatide
- Teduglutide
- GLP-1
- GLP-2
- Efpeglenatide
- Glucagon
- Tesofensine
- 5-Amino-1MQ
- Vitamin B12
- CagriSema
- MariTide
- VK2735
- Amycretin
- Petrelintide
- Pemvidutide
- Ecnoglutide
- Danuglipron
- Bimagrumab
- Efocipegtrutide
- Eloralintide
- Berobenatide
- Aleniglipron
- Ribupatide
- Enicepatide
- Elecoglipron
- UBT251
- HRS-7535
- AZD6234
- MET-233i
- Nimacimab
- Monlunabant
- BI 3034701
- Efruxifermin
- Pegozafermin
- Efimosfermin alfa
- Lanifibranor
- BRP
- ATX-304
- BAM15
- Cardarine
- SR9009
- Pancragen
Muscle & Performance
Frequently asked questions
How does peptide reconstitution work?
Reconstitution mixes a lyophilized (freeze-dried) peptide with bacteriostatic water. The vial strength in milligrams divided by the water volume in milliliters gives the concentration. Dividing your target dose by that concentration gives the volume to draw.
What does 'units' mean on the calculator?
A standard U-100 insulin syringe is marked in units where 100 units equals 1 mL. The calculator converts the required volume into those units so the number matches the syringe markings.
Does adding more bacteriostatic water change the dose?
It does not change the amount of peptide, only the concentration. More water spreads the same peptide across a larger volume, so each dose is drawn at more units, which can make small doses easier to measure accurately.
Educational use only. This database summarizes published research. It is not medical advice and contains no dosing protocols or recommendations for personal use. This calculator does not recommend a dose. It only converts the numbers you enter into a volume. The Longevity Archive does not provide medical advice.