How do you convert mcg to mg?

Divide the micrograms by 1000. The tool does this automatically and also shows the reverse: 1 mg = 1000 mcg.

Is mcg the same as µg?

Yes. mcg is a keyboard-friendly way to write µg (microgram). Both mean 10⁻⁶ grams.

Can I use this for medicine doses?

You can convert units here, but always follow the dose prescribed by your doctor or pharmacist. This tool does not replace clinical judgment.

mcg to mg Converter

Convert micrograms (mcg / µg) to milligrams (mg) and milligrams to micrograms. This is especially useful for medical doses, supplements, and laboratory calculations. Remember: 1 mg = 1000 mcg.

Micrograms mcg / µg

Milligrams mg

500 mcg → 0.5 mg

Common conversions

mcg	mg	Context
100 mcg	0.1 mg	e.g. vitamin B12
250 mcg	0.25 mg	common tablet dose
500 mcg	0.5 mg	half a milligram
1000 mcg	1 mg	1 mg exactly
2000 mcg	2 mg	2 milligrams

How to convert mcg to mg

Micrograms are one thousandth of a milligram. So:

mg = mcg ÷ 1000

mcg = mg × 1000

Example

1350 mcg ÷ 1000 = 1.35 mg

2 mg × 1000 = 2000 mcg

Medical / pharmacy note

This tool is useful for checking unit changes, but medication doses must always follow the prescription or protocol. If your prescription says “mcg” do NOT assume “mg”: mixing them up causes an ×1000 error.