100 unit insulin syringe (1 mL)
A 1 mL (100 unit) insulin syringe holds 100 units, which is 1 mL. Each unit is 0.01 mL. Most 1 mL syringes have a line every 2 units, with numbers at every 5 or 10 units.
100 units = 1 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 2 units.
- 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.
1 mL syringe: units to mL
| Units | Milliliters |
|---|---|
| 10 units | 0.1 mL |
| 20 units | 0.2 mL |
| 30 units | 0.3 mL |
| 40 units | 0.4 mL |
| 50 units | 0.5 mL |
| 60 units | 0.6 mL |
| 70 units | 0.7 mL |
| 80 units | 0.8 mL |
| 90 units | 0.9 mL |
| 100 units | 1 mL |
When to pick the 1 mL size
The 1 mL syringe fits large volumes, but its lines are 2 units apart, so doses under 10 units are hard to read precisely.
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 1 mL insulin syringe?
100 units. On a U-100 syringe, 1 mL holds 100 units.
What does each line mean on a 1 mL insulin syringe?
On most 1 mL U-100 syringes each small line is 2 units.
How many mL is 50 units?
0.5 mL. Each unit on a U-100 syringe is 0.01 mL.