mg to Insulin Units Converter
Enter your dose in milligrams and the vial concentration to see the equivalent insulin syringe units.
Need the reverse or a different unit? See all converters. For a full reconstitution plan, use the main calculator.
How the conversion works
Insulin syringes are marked in units where 100 units = 1 mL on a standard U-100 syringe. To draw a peptide dose in mg, you need to know the reconstituted concentration (mg/mL) — the amount of peptide in each mL of bacteriostatic water in the vial.
This converter multiplies your desired mg dose by 100 and divides by the mg/mL concentration. For example, a 0.25 mg dose from a 2 mg/mL vial equals 0.25 × 100 / 2 = 12.5 units on a U-100 syringe.
Example conversions
Frequently asked questions
How do I convert mg to insulin units for peptides?
Units = (dose in mg × 100) ÷ concentration in mg/mL. The 100 comes from the U-100 syringe scale where 1 mL = 100 units.
Do I need to know my vial concentration?
Yes — the same mg dose is a different number of units depending on how much bacteriostatic water you used to reconstitute. Use the reconstitution calculator to find your mg/mL.
Related converters
mcg to Insulin Units Converter
Convert a microgram (mcg) peptide dose to insulin syringe units using your vial's concentration.
Insulin Units to mg Converter
Convert insulin syringe units back to a peptide dose in milligrams (mg).
Insulin Units to mcg Converter
Convert insulin syringe units back to a peptide dose in micrograms (mcg).
mL to Insulin Units Converter
Convert a volume in mL to the equivalent units on a U-100 insulin syringe.
Insulin Units to mL Converter
Convert insulin syringe units to a milliliter volume.