This free peptide calculator covers dosage, reconstitution, and syringe unit conversion for 27 research-grade compounds — all in one tool. Enter your body weight or a custom dose, add your vial size and BAC water volume, and get the exact draw volume in mL and syringe units instantly.
Research Purposes Only. All dosage data is derived from preclinical literature and is intended exclusively for licensed researchers working with research-grade compounds in controlled laboratory settings. These compounds are not approved by the FDA for human use. This tool does not constitute medical advice.
Typically administered subcutaneously near the site of injury in preclinical models. Stable in physiological conditions due to high proline content.
Auto-generated from BPC-157 dosing frequency
| Week | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|---|
| Wk 1 | 200mcg 8u | 200mcg 8u | 200mcg 8u | 200mcg 8u | 200mcg 8u | 200mcg 8u | 200mcg 8u |
| Wk 2 | 200mcg 8u | 200mcg 8u | 200mcg 8u | 200mcg 8u | 200mcg 8u | 200mcg 8u | 200mcg 8u |
| Wk 3 | 200mcg 8u | 200mcg 8u | 200mcg 8u | 200mcg 8u | 200mcg 8u | 200mcg 8u | 200mcg 8u |
| Wk 4 | 200mcg 8u | 200mcg 8u | 200mcg 8u | 200mcg 8u | 200mcg 8u | 200mcg 8u | 200mcg 8u |
Cycle length reference: 4–12 weeks · Route: Subcutaneous injection
The problem this solves: Research peptides come as a dry powder in a vial measured in milligrams. You mix them with water to create a liquid solution. But your dose is measured in micrograms — and you draw it out with an insulin syringe measured in units. Converting between all three of those measurements without making an error is genuinely confusing, and errors matter in research settings. This calculator does all of that math for you instantly.
The three numbers you need to know: (1) How much peptide is in the vial (e.g., 5 mg). (2) How much water you're adding (e.g., 2 mL). (3) What dose you want (e.g., 250 mcg). From those three numbers, the calculator tells you exactly how many mL to draw and exactly which line on your syringe to fill to. No guesswork.
Why body weight matters: Many research protocols dose by body weight (e.g., 2.5 mcg per kg). A 70 kg subject needs a different dose than a 90 kg subject. The weight-based mode automatically scales the dose to the correct amount for any body weight, then converts it to the syringe volume you actually need.
Bottom line: Select your compound, enter your weight or desired dose, enter your vial size and water volume — and the calculator gives you the exact number to draw. That's it.
Choose from 27 research peptides. Each compound has pre-loaded typical dose ranges derived from published preclinical literature.
Use weight-based dosing (mcg/kg) for normalized calculations, or enter a specific dose in micrograms if working from a defined protocol.
Enter your vial size (mg) and the volume of bacteriostatic water (BAC water) used. The calculator derives concentration and computes the exact draw volume in mL and syringe units.
Standard concentrations for common vial + BAC water combinations. All values in mcg/mL.
| Vial Size | 1 mL BAC Water | 2 mL BAC Water | 3 mL BAC Water |
|---|---|---|---|
| 2 mg | 2,000 mcg/mL | 1,000 mcg/mL | 667 mcg/mL |
| 5 mg | 5,000 mcg/mL | 2,500 mcg/mL | 1,667 mcg/mL |
| 10 mg | 10,000 mcg/mL | 5,000 mcg/mL | 3,333 mcg/mL |
| 20 mg | 20,000 mcg/mL | 10,000 mcg/mL | 6,667 mcg/mL |
Standard recommendation: 2 mL BAC water per 5 mg vial (2,500 mcg/mL) is the most common reconstitution protocol in preclinical research, as it balances concentration with manageable injection volumes.
Each compound page includes a full mechanism of action breakdown, key signaling pathways, peer-reviewed research highlights, and current pricing from Purgo Labs.
All compounds featured in this calculator are available from Purgo Labs — ≥99% purity, third-party COA verified, cGMP-compliant manufacturing.
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Medical Disclaimer: All content on this site is for educational and research purposes only. Research peptides are not FDA-approved for human use. Always consult a qualified healthcare professional before considering any peptide or supplement protocol. Nothing on this site constitutes medical advice, diagnosis, or treatment.