Peptide Dosage Calculator
Easily convert your desired peptide dose into exact syringe units. Designed for standard U-100 insulin syringes.
The total amount of peptide powder in your vial. This is usually printed on the label (e.g., 2mg, 5mg, 10mg).
The exact amount of liquid you injected into the vial to reconstitute the powder. (Note: 1ml = 100 units on a syringe).
How much peptide do you want to inject right now? This is calculated in milligrams (mg) (e.g., 0.25, 2.5, 5).
Your Required Dose
Based on a standard U-100 Insulin Syringe
(This is 0 ml of liquid)
⚠️ Dose exceeds 100 units. You will need multiple syringes.
- Total Peptide in Vial: 0 mg
- Concentration per 1ml: 0 mg
- Concentration per 1 Unit (tick): 0 mg
Research & Educational Use Only
This calculator is provided strictly for educational and harm-reduction purposes to help with peptides like retatrutide, GHK-Cu, NAD+, KLOW, BCP-157, TB500 and many more. It assumes the use of standard U-100 insulin syringes (where 1ml = 100 units).
- • Always double-check your math before administration.
- • Ensure you are using bacteriostatic water for reconstitution to prevent bacterial growth.
How to Use the Peptide Dosage Calculator
If you are researching peptides, you already know that the hardest part isn’t the research itself—it is the math. Miscalculating your peptide dosage can lead to ineffective results or, worse, taking significantly more than intended.
This Peptide Dosage Calculator is designed to take the guesswork out of reconstitution. Whether you are working with 2mg, 5mg, or 10mg vials, this tool instantly converts your desired milligram (mg) dose into exact units on a standard U-100 insulin syringe.
Step-by-Step Guide to Calculating Your Dose
To get an accurate draw volume, you need three pieces of information. Enter them into the calculator above:
- Peptide Vial Quantity (mg): Look at the label on your freeze-dried peptide vial. This is the total amount of raw peptide powder inside the glass (e.g., 5mg).
- Bacteriostatic Water Added (ml): How much liquid did you use to mix (reconstitute) the powder? Standard practice usually involves adding 1ml, 2ml, or 3ml of bacteriostatic water. (Note: 1ml of liquid equals exactly 100 units on a standard syringe).
- Your Desired Dose (mg): How much of the peptide do you intend to administer right now? Ensure you are entering this in milligrams (e.g., 0.25mg, 2.5mg, etc.).
Once you hit calculate, the tool will instantly tell you exactly which “tick mark” (unit) to pull your syringe plunger down to.
Understanding Peptide Reconstitution Math
Why is a calculator necessary? Because peptides come in a freeze-dried (lyophilized) powder, they must be mixed with bacteriostatic water before use. Once mixed, you have to figure out the concentration of the liquid.
If you have a 5mg vial of peptides and you add 2ml of water, you now have a solution where every 1ml of liquid contains 2.5mg of peptide. Because a standard U-100 syringe holds exactly 1ml (100 units), that means 100 units = 2.5mg.
Doing this math in your head, especially when dealing with micro-doses like 0.25mg, leaves room for dangerous human error. This calculator runs this exact formula instantly to ensure you pull the correct volume every single time.
Frequently Asked Questions (Peptide Math)
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