A precision reconstitution calculator, vetted dosing library, and unit conversion guide — built for people who don't want to mess this up.
Enter your vial size, the volume of bacteriostatic water you'll add, and your target dose. We'll show you exactly how many units to draw on a U-100 insulin syringe.
Peptide Plugs is the supplier I personally use and trust.
Shop Peptide Plugs →Reference dosing observed in research literature, half-lives, and reconstitution starting points. Click a card to load it into the calculator.
The math behind the calculator. Bookmark this page — it's the cheat sheet you'll come back to every time.
| 10 units | 0.10 mL |
| 20 units | 0.20 mL |
| 25 units | 0.25 mL |
| 50 units | 0.50 mL |
| 75 units | 0.75 mL |
| 100 units | 1.00 mL |
| 1 mg | 1,000 mcg |
| 0.5 mg | 500 mcg |
| 0.25 mg | 250 mcg |
| 0.1 mg | 100 mcg |
| 0.05 mg | 50 mcg |
| 2 mg | 2,000 mcg |
| 5 mg vial | 2 mL standard |
| 10 mg vial | 2–3 mL |
| 15 mg vial | 3 mL |
| 20 mg vial | 3–4 mL |
| 50 mg vial | 2–5 mL |
| 100 mg vial | 2–4 mL |
| 5 mg / 2 mL | 2.5 mg/mL |
| 10 mg / 2 mL | 5.0 mg/mL |
| 10 mg / 1 mL | 10 mg/mL |
| 15 mg / 3 mL | 5.0 mg/mL |
| 2 mg / 1 mL | 2.0 mg/mL |
| 100 mg / 2 mL | 50 mg/mL |
| Lyophilized (sealed) | Freezer |
| Reconstituted | Refrigerated |
| Light exposure | Avoid |
| Reconstituted shelf life | ~30 days |
| Sealed vial shelf life | 12–24 mo |
Use bacteriostatic water, not regular saline. Add water down the side of the vial — never directly onto powder. Swirl gently to dissolve; never shake. Once mixed, refrigerate and use within ~30 days.
I'm Jeannette — founder of Roman Vitus and the woman behind MrsPeptideGlo. I built this site because I got tired of watching people stumble through peptide math in forums, hoping they didn't shave a zero off the wrong number.
My background is in personal training, nutrition coaching, and wellness education, and over the years I've worked with enough clients curious about peptides to know there's a real gap between "I read a thread on Reddit" and "I actually understand what I'm doing."
This is the resource I wish existed when I started: clean math, honest references, no hype, and zero fluff. If it helps one person dose with confidence instead of guesswork, it's done its job.
The full reconstitution guide, dosing tables, and unit conversion sheet in one downloadable PDF — saved to your phone for when you're at the bench.