Micrograms are used for very potent substances and some vitamins. A liquid labelled 500 mcg/mL contains half a milligram in each millilitre.
How to use the mcg to mL Calculator
- Amount
- Concentration
- Every result field is editable: type into Volume and Amount plus every other field update to match.
Results update as you type, and every field accepts the units shown in its menu.
How it works
The concentration is converted to micrograms per millilitre and the amount is divided by it.
Good to know
For medicines, always use the prescribed dose and the measuring device supplied. This tool checks the arithmetic only.
Inputs explained
| Field | What to enter |
|---|---|
| Amount | Units: µg, mg |
| Concentration | Units: mcg/mL, mg/mL, mcg per 5 mL |
Example values
How the main result changes when Amount changes and everything else stays at the example values above:
| Amount (µg) | Volume (mL) |
|---|---|
| 200 | 400 |
| 300 | 600 |
| 400 | 800 |
| 500 | 1,000 |
| 600 | 1,200 |
| 800 | 1,600 |
Formula
volume (mL) = mass (mcg) ÷ concentration (mcg/mL)Worked example
Inputs — Amount: 400 µg; Concentration: 500 mcg/mL.
Results — Volume = 800 mL.
Frequently asked questions
How many mL is 400 mcg at 500 mcg/mL?
0.8 mL.
How many mcg in a mg?
1,000.
What formula does the mcg to mL Calculator use?
volume (mL) = mass (mcg) ÷ concentration (mcg/mL).