mg to mcg Converter
Convert mg to mcg or mcg to mg instantly. This simple calculator shows the converted amount and common reference values without giving dosing advice.
Result
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Converted amount
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mcg and µg are the same unit.
Common conversions
| Milligrams | Micrograms |
|---|---|
| 0.25 mg | 250 mcg |
| 0.5 mg | 500 mcg |
| 1 mg | 1000 mcg |
| 2.5 mg | 2500 mcg |
| 5 mg | 5000 mcg |
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How the mg to mcg calculation works
This mg to mcg calculator converts the amount you enter between milligrams and micrograms. The conversion is arithmetic on a number you already have; it does not suggest what anyone should take.
Milligrams and micrograms are different scales of mass. The abbreviation mcg and the symbol µg mean the same unit, which is the usual source of confusion in mixed notation.
Use the reference table to check common conversions at a glance.
1 mg = 1000 mcg; 1 mcg = 0.001 mg This tool performs a definitional unit conversion only. It is not dosing advice.
mg to mcg calculator FAQ
How many mcg are in 1 mg?
1 mg equals 1000 mcg exactly.
Are mcg and µg the same?
Yes. mcg and µg are two notations for the same microgram unit.
How do I convert mcg to mg?
Divide the number of mcg by 1000. For example, 250 mcg equals 0.25 mg.
Does this calculator tell me what to take?
No. It only converts units for an amount you already have and does not provide dosing advice.
Are my values saved?
No. The conversion runs in your browser and this tool does not save the values you enter.