Syringe units to mL conversion chart (U-100, U-50, U-40)
mL = units ÷ units-per-mL. U-100: 1 unit = 0.01 mL. U-50: 1 unit = 0.02 mL. U-40: 1 unit = 0.025 mL. So 10 units is 0.10 mL on U-100, 0.20 mL on U-50 and 0.25 mL on U-40. Full chart below, with a free printable PDF.
The math
mL = units ÷ 100 (U-100) | ÷ 50 (U-50) | ÷ 40 (U-40) units = mL × 100 | × 50 | × 40
| Units | U-100 (mL) | U-50 (mL) | U-40 (mL) |
|---|---|---|---|
| 1 | 0.01 | 0.02 | 0.025 |
| 2 | 0.02 | 0.04 | 0.05 |
| 3 | 0.03 | 0.06 | 0.075 |
| 4 | 0.04 | 0.08 | 0.1 |
| 5 | 0.05 | 0.1 | 0.125 |
| 10 | 0.1 | 0.2 | 0.25 |
| 15 | 0.15 | 0.3 | 0.375 |
| 20 | 0.2 | 0.4 | 0.5 |
| 25 | 0.25 | 0.5 | 0.625 |
| 30 | 0.3 | 0.6 | 0.75 |
| 40 | 0.4 | 0.8 | 1 |
| 50 | 0.5 | 1 | 1.25 |
| 60 | 0.6 | 1.2 | 1.5 |
| 70 | 0.7 | 1.4 | 1.75 |
| 80 | 0.8 | 1.6 | 2 |
| 90 | 0.9 | 1.8 | 2.25 |
| 100 | 1 | 2 | 2.5 |
Note: Rows can run past common barrel sizes (e.g., a 0.5 mL U-50 barrel holds 25 units; a 1 mL U-40 holds 40 units), so check your barrel's capacity.
Math only, not medical advice. This page converts numbers; it does not recommend any compound or amount.
Draw to
10 units
= 0.1 mL · concentration 2.5 mg/mL (2500 mcg/mL) · 20 draws per vial
Concentration = 5 mg ÷ 2 mL = 2.5 mg/mL Volume = 250 mcg ÷ 2500 mcg/mL = 0.1 mL Units = 0.1 mL × 100 (U-100) = 10 units
Math only, not medical advice. Verify every number yourself.