Convert between insulin syringe units (IU) and milliliters (mL). Works for all U-100 syringes.
Standard insulin syringes use the U-100 scale, meaning 100 units = 1 mL. This is a universal standard regardless of syringe size (0.3mL, 0.5mL, or 1mL syringes all use U-100 markings).
The conversion is simple: 1 unit = 0.01 mL. So 10 units = 0.10 mL, 25 units = 0.25 mL, and so on.
0.3 mL (30 units): Best for very small doses. Each tick mark is typically 0.5 units. Great for peptides like BPC-157 and ipamorelin.
0.5 mL (50 units): Good balance between precision and capacity. Each tick mark is typically 1 unit.
1.0 mL (100 units): Most common. Each tick mark is typically 2 units. Best for larger doses like tirzepatide or TB-500.
Need to calculate a full peptide dose? Use our reconstitution calculator →