50 unit insulin syringe (0.5 mL)
A 0.5 mL (50 unit) insulin syringe holds 50 units, which is 0.5 mL. Each unit is 0.01 mL. Most 0.5 mL syringes have a line every unit, with numbers at every 5 or 10 units.
50 units = 0.5 mL · 1 unit = 0.01 mL
How to read it
- Hold the syringe with the needle pointing up and the scale facing you.
- Find the number of units you need. Count the small lines from the nearest number: each line is 1 unit.
- Pull the plunger until the top edge of the dark stopper, the side nearest the needle, sits on that line. Tap out air bubbles and check again.
0.5 mL syringe: units to mL
| Units | Milliliters |
|---|---|
| 5 units | 0.05 mL |
| 10 units | 0.1 mL |
| 15 units | 0.15 mL |
| 20 units | 0.2 mL |
| 25 units | 0.25 mL |
| 30 units | 0.3 mL |
| 35 units | 0.35 mL |
| 40 units | 0.4 mL |
| 45 units | 0.45 mL |
| 50 units | 0.5 mL |
When to pick the 0.5 mL size
Smaller barrels spread each unit over more space, so small doses are easier to read. Use it when your dose is under 50 units.
Mixing a vial?
Answer 4 quick taps and see exactly how many units to draw for your dose, on your syringe.
Calculate my unitsQuestions
How many units are in a 0.5 mL insulin syringe?
50 units. On a U-100 syringe, 0.5 mL holds 50 units.
What does each line mean on a 0.5 mL insulin syringe?
On most 0.5 mL U-100 syringes each small line is 1 unit.
How many mL is 25 units?
0.25 mL. Each unit on a U-100 syringe is 0.01 mL.