Mcg to mL Calculator
Convert micrograms to milliliters for liquid medications. Enter your dose in mcg and the concentration from the label, and the calculator figures out exactly how much liquid to measure.
Micrograms (mcg or µg) measure an extremely small amount of mass, while milliliters (mL) measure volume. To convert between them for a liquid medication, you need the concentration printed on the label.
Formula: mL = mcg / concentration (mcg/mL)
For example, if you need 500 mcg of a medication with a concentration of 100 mcg/mL, you need 500 / 100 = 5 mL.
Understanding Microgram Units:
| Unit | Abbreviation | Equivalent |
|---|---|---|
| 1 microgram | 1 mcg (µg) | 0.001 mg |
| 1 milligram | 1 mg | 1,000 mcg |
| 1 gram | 1 g | 1,000,000 mcg |
Common Medications Dosed in Micrograms:
- Vitamin D (cholecalciferol): 25-125 mcg/day
- Vitamin B12 (cyanocobalamin): 100-1,000 mcg/day
- Folic acid: 400-800 mcg/day
- Levothyroxine: 25-200 mcg/day
- Melatonin: 300-5,000 mcg
Important: This calculator performs a math conversion only. Always consult a pharmacist or physician for medication dosing. Double-check that you are using mcg, not mg, as confusing the two can result in a 1,000-fold dosing error.