Free Peptide Reconstitution Calculator
Enter your vial size and bacteriostatic water volume — get exact injection doses in mL and syringe units instantly. Covers 87 research peptides including BPC-157, Semaglutide, TB-500, CJC-1295, and Ipamorelin.
No sign-up required
Concentration
Calculates mcg/mL based on your vial size and water volume.
Injection Dose
Shows exact mL and syringe units (IU) for your target dose.
Doses per Vial
See how many doses you get and the cost per dose.
How to Use the Calculator
Select your peptide from the dropdown (87 available).
Enter the vial size in mg and water volume in mL.
Set your target dose in micrograms (mcg).
Read off the injection volume in mL and syringe units.
87 Peptides Supported
Pre-loaded with recommended dosing parameters for every peptide. Popular searches:
Frequently Asked Questions
How do I reconstitute a peptide?
Draw bacteriostatic water (BAC water) into a syringe, then inject it slowly down the inside wall of the peptide vial. Do not squirt directly onto the powder — let the water gently dissolve the lyophilized peptide. Swirl gently if needed; never shake.
How much bacteriostatic water should I add?
It depends on the vial size and your desired concentration. Our calculator recommends a standard amount for each peptide, but you can adjust it. More water = lower concentration = larger injection volume (easier to measure small doses accurately).
What syringe should I use for peptide injections?
Most researchers use insulin syringes (U-100, 0.5 mL or 1 mL). These have fine gauge needles (29-31G) suitable for subcutaneous injections and markings in "units" (IU) for precise measurement.
How long does a reconstituted peptide last?
Most reconstituted peptides last 3-4 weeks when stored at 2-8°C (refrigerated). Some are more fragile. Our calculator shows a shelf-life estimate for each peptide. Never freeze reconstituted peptides.
Is the calculator free?
Yes — the reconstitution calculator is completely free, no account required. You can save your calculations and build protocols by creating a free account.