PepCalcs

    Insulin Units to mcg Converter

    Convert insulin syringe units back to a peptide dose in micrograms (mcg).

    Dose (mcg)

    Need the reverse or a different unit? See all converters. For a full reconstitution plan, use the main calculator.

    How the conversion works

    Formula: mcg = units × concentration in mg/mL × 10. This works because 1 mL on a U-100 syringe = 100 units, and 1 mg = 1,000 mcg.

    Example: 10 units from a 2.5 mg/mL vial = 10 × 2.5 × 10 = 250 mcg.

    Example conversions

    Insulin units
    Concentration
    Dose (mcg)
    10 units
    2.5 mg/mL
    250 mcg
    5 units
    5 mg/mL
    250 mcg
    20 units
    1 mg/mL
    200 mcg

    Frequently asked questions

    Which concentration should I use?

    The reconstituted mg/mL — total mg of peptide in the vial divided by mL of bacteriostatic water you added.

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