Peptide Dosage Calculator

Syringe Size *

0.3ml
0.5ml
1ml

Peptide amount in vial *

Bacteriostatic water *

Dose needed *

To have a dose of 50mcg, pull the syringe to 0 units.

FAQs

What is the PepWorld Peptide Calculator used for?

Our calculator takes the guesswork out of peptide reconstitution. It helps you figure out exactly how many units to draw into your insulin syringe based on the total amount of peptide in your vial, the volume of Bacteriostatic water used, and your required target dose.

What is Bacteriostatic Water (BAC water) and why is it used?

Bacteriostatic water is sterile water containing 0.9% benzyl alcohol, which prevents the growth of bacteria. It is the standard liquid used to safely dissolve (reconstitute) freeze-dried (lyophilized) peptide powder so it can be drawn into a syringe.

Does it matter how much Bacteriostatic water I add to the vial?

The amount of water doesn't change the total amount of peptide, but it does change the concentration.

  • Adding more water dilutes the mixture, meaning you will need to draw a larger volume (more units) for your dose.

  • Adding less water makes the solution more concentrated, requiring a smaller draw. Our calculator adjusts the math automatically regardless of how much water you choose to mix.

What do the "Units" on my syringe mean?

Standard insulin syringes are measured in "Units" rather than milliliters (ml).

  • 0.3ml syringe = 30 Units

  • 0.5ml syringe = 50 Units

  • 1.0ml syringe = 100 Units Our calculator tells you exactly which unit mark to pull the plunger to, so you don't have to convert between ml, mg, and mcg manually.

How do I calculate my dosage using this tool?

It's a simple 4-step process:

  1. Syringe Size: Choose the total volume of your syringe (e.g., 0.3ml, 0.5ml, or 1ml).

  2. Peptide Amount in Vial: Select the total milligrams (mg) printed on your peptide vial label.

  3. Bacteriostatic Water: Select how many milliliters (ml) of water you mixed into the vial.

  4. Dose Needed: Select your target dose in micrograms (mcg) or milligrams (mg). The calculator will instantly show you the exact units to draw, complete with a visual ruler guide!

Can I use this calculator for any type of peptide?

Yes! The math for reconstitution remains exactly the same regardless of the peptide type (e.g., BPC-157, TB-500, CJC-1295, etc.). As long as you know the vial size (mg) and your target dose, the calculator will provide the correct syringe units.