Vial to Units

12 units to mg

12 units on a U-100 insulin syringe is 0.12 mL. That holds 0.6 mg when the vial is 5 mg/mL and 1.2 mg at 10 mg/mL. mg = units ÷ 100 × mg/mL.

12 units in mg, by concentration

ConcentrationVolume12 units =
1 mg/mL · 5 mg vial + 5 mL0.12 mL0.12 mg · 120 mcg
2 mg/mL · 10 mg vial + 5 mL0.12 mL0.24 mg · 240 mcg
2.5 mg/mL · 5 mg vial + 2 mL0.12 mL0.3 mg · 300 mcg
3 mg/mL · 15 mg vial + 5 mL0.12 mL0.36 mg · 360 mcg
5 mg/mL · 10 mg vial + 2 mL0.12 mL0.6 mg · 600 mcg
7.5 mg/mL · 15 mg vial + 2 mL0.12 mL0.9 mg · 900 mcg
10 mg/mL · 10 mg vial + 1 mL0.12 mL1.2 mg
15 mg/mL · 30 mg vial + 2 mL0.12 mL1.8 mg
20 mg/mL · 20 mg vial + 1 mL0.12 mL2.4 mg

Calculate for your vial

The calculator is set to work backwards from 12 units. Add your vial size and the water added.

mg
mL

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 12 units?

12 units on a U-100 syringe is 0.12 mL. Multiply that by the concentration: at 5 mg/mL it is 0.6 mg, at 10 mg/mL it is 1.2 mg.

How many mL is 12 units?

0.12 mL. On a U-100 insulin syringe 100 units is 1 mL.

How many mcg is 12 units?

Work out the mg first, then multiply by 1,000. At 5 mg/mL, 12 units is 0.6 mg, which is 600 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

Calculators with vial-size presets