Free tool
Reconstitution calculator
Milligrams in the vial, millilitres of bacteriostatic water, micrograms per dose. Out comes the number of units to draw — plus the concentration and volume, so you can check it against your own arithmetic.
As printed on the vial label
How much you inject into the vial
1000 mcg = 1 mg
Fills in a common vial size and the low end of commonly cited protocols. Always check against your own vial.
on a 1 mL U-100 insulin syringe
- Concentration
- 5 mg/mL
- Volume
- 0.05 mL
- Doses in this vial
- 40
VialPal does the arithmetic — it does not tell you what to take. Dose decisions belong between you and a qualified clinician.
The arithmetic
How it works, step by step.
- 01
Concentration
10 mg ÷ 2 mL = 5 mg/mL
Peptide in the vial divided by the water you added.
- 02
Dose in milligrams
250 mcg ÷ 1000 = 0.25 mg
Protocols are written in micrograms; concentration is in milligrams.
- 03
Volume to draw
0.25 mg ÷ 5 mg/mL = 0.05 mL
Dose divided by concentration.
- 04
Units on the syringe
0.05 mL × 100 = 5 units
A U-100 syringe has 100 units per millilitre.
Common vials
Start from a specific peptide.
Questions