mcg to mg converter

Type an amount in mcg or mg. Add the mg/mL on your vial's label to also see the mL and syringe units.

mg = mcg ÷ 1,000, and mcg = mg × 1,000

Amount

Label strength (optional)

mg/mL

This does arithmetic on the numbers you type. It doesn't suggest a dose. Check the result with your prescriber or pharmacist.

That's

–mg

Type an amount

Worked example

250 mcg ÷ 1,000 = 0.25 mg. At 5 mg/mL, 0.25 mg is 0.05 mL, which is 5 units on a U-100 syringe.

Milli means a thousandth and micro a millionth, so 1 mg is 1,000 mcg. With a label strength, mL = mg ÷ strength and units = mL × 100, because a U-100 syringe holds 100 units in 1 mL.

It's the same code the PepBloom app runs, and it runs in your browser. Nothing you type leaves this page.

1,000. So divide mcg by 1,000 to get mg, and multiply mg by 1,000 to get mcg.

Yes. mcg, µg and ug all mean microgram, a thousandth of a mg.

It depends on your vial's strength. At 5 mg/mL it's 5 units; at 2.5 mg/mL it's 10. Type the mg/mL from your label above.