1 unit to mg
1 unit on a U-100 insulin syringe is 0.01 mL. That holds 0.05 mg when the vial is 5 mg/mL and 0.1 mg at 10 mg/mL. mg = units ÷ 100 × mg/mL.
1 unit in mg, by concentration
| Concentration | Volume | 1 unit = |
|---|---|---|
| 1 mg/mL · 5 mg vial + 5 mL | 0.01 mL | 0.01 mg · 10 mcg |
| 2 mg/mL · 10 mg vial + 5 mL | 0.01 mL | 0.02 mg · 20 mcg |
| 2.5 mg/mL · 5 mg vial + 2 mL | 0.01 mL | 0.025 mg · 25 mcg |
| 3 mg/mL · 15 mg vial + 5 mL | 0.01 mL | 0.03 mg · 30 mcg |
| 5 mg/mL · 10 mg vial + 2 mL | 0.01 mL | 0.05 mg · 50 mcg |
| 7.5 mg/mL · 15 mg vial + 2 mL | 0.01 mL | 0.075 mg · 75 mcg |
| 10 mg/mL · 10 mg vial + 1 mL | 0.01 mL | 0.1 mg · 100 mcg |
| 15 mg/mL · 30 mg vial + 2 mL | 0.01 mL | 0.15 mg · 150 mcg |
| 20 mg/mL · 20 mg vial + 1 mL | 0.01 mL | 0.2 mg · 200 mcg |
Calculate for your vial
The calculator is set to work backwards from 1 unit. Add your vial size and the water added.
Enter the vial size and the water you added.
Arithmetic only. This tool does not recommend a dose; use the one your prescriber gave you.
Questions
How many mg is 1 unit?
1 unit on a U-100 syringe is 0.01 mL. Multiply that by the concentration: at 5 mg/mL it is 0.05 mg, at 10 mg/mL it is 0.1 mg.
How many mL is 1 unit?
0.01 mL. On a U-100 insulin syringe 100 units is 1 mL.
How many mcg is 1 unit?
Work out the mg first, then multiply by 1,000. At 5 mg/mL, 1 unit is 0.05 mg, which is 50 mcg.
How do I find the concentration of my vial?
Divide the mg printed on the vial by the mL of water that was added. A 10 mg vial with 2 mL added is 5 mg/mL. If the vial was dispensed as a liquid, the mg/mL is printed on the label.
Nearby conversions
- 2 units to mg
- 5 units to mg
- 8 units to mg
- 10 units to mg
- 12 units to mg
- 15 units to mg
- 1.25 mg to units
- 250 mcg to units
- 1 unit to mL
- 2 units to mL
- 0.05 mL to units
- 0.1 mL to units
- All conversions