Peptide Dose Calculator
Convert between mg, mL, and units. Calculate doses for insulin, GLP-1 agonists, and research peptides.
How to Use This Calculator
- Select a peptide preset or enter custom vial information
- Enter the vial mass (mg) of lyophilized peptide
- Enter the reconstitution concentration (mg/mL) — typically 1 or 2 mg/mL
- Enter your desired dose in µg or mg
- View the volume per dose (mL and insulin units) and doses per vial
Common Presets
| Peptide | Typical Vial | Common Dose | Reconstitute |
|---|---|---|---|
| Semaglutide | 2 mg | 250 µg titrating to 2.4 mg | 1 mL BAC (2 mg/mL) |
| Liraglutide | 6 mg | 600 µg titrating to 3 mg | 3 mL BAC (2 mg/mL) |
| Ipamorelin | 2 mg | 200–300 µg | 1 mL BAC (2 mg/mL) |
| CJC-1295 DAC | 2 mg | 1–2 mg | 1 mL BAC (2 mg/mL) |
| BPC-157 | 5 mg | 250–500 µg | 2.5 mL BAC (2 mg/mL) |
| TB-500 | 5 mg | 2–4 mg | 2.5 mL BAC (2 mg/mL) |
The Formula
The core calculation for peptide dosing:
For a 2 mg vial reconstituted with 1 mL BAC water (2 mg/mL): a 250 µg (0.25 mg) dose = 0.125 mL = 12.5 insulin units. The vial contains 8 doses.
Insulin Syringe Reference
1 mg/mL Reconstitution
10 units (0.1 mL) = 100 µg
20 units (0.2 mL) = 200 µg
25 units (0.25 mL) = 250 µg
50 units (0.5 mL) = 500 µg
2 mg/mL Reconstitution
10 units (0.1 mL) = 200 µg
12.5 units (0.125 mL) = 250 µg
15 units (0.15 mL) = 300 µg
25 units (0.25 mL) = 500 µg
Frequently Asked Questions
How many units is 250 µg at 2 mg/mL?
250 µg = 0.25 mg. At 2 mg/mL concentration: 0.25 ÷ 2 = 0.125 mL = 12.5 insulin units.
How do I convert units to mL?
Divide insulin units by 100. Example: 50 units = 0.5 mL. Multiply mL by concentration (mg/mL) to get dose in mg.
What syringe should I use for peptides?
Insulin syringes (U-100) are standard for peptide administration. Use 0.3 mL or 0.5 mL syringes for small volumes (<50 units) for greater precision.