How do I convert mcg to mL?
mL = mcg ÷ concentration in mcg/mL. With 5 mg in 2 mL (2,500 mcg/mL), 250 mcg = 0.1 mL, which is 10 units on a U-100 syringe. Concentration in mcg/mL = vial mg × 1000 ÷ water mL.
The math
concentration (mcg/mL) = vial mg × 1000 ÷ water mL volume (mL) = amount mcg ÷ concentration (mcg/mL) Example: 250 ÷ 2500 = 0.1 mL = 10 U-100 units
| Amount | at 1,000 mcg/mL | at 2,500 mcg/mL | at 5,000 mcg/mL |
|---|---|---|---|
| 100 mcg | 0.1 mL | 0.04 mL | 0.02 mL |
| 250 mcg | 0.25 mL | 0.1 mL | 0.05 mL |
| 500 mcg | 0.5 mL | 0.2 mL | 0.1 mL |
| 1000 mcg | 1 mL | 0.4 mL | 0.2 mL |
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.