Convert micrograms to milligrams
1 µg = 0.001 mg — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
0.001mg
As a fraction: 1/1000
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1 µg = 0.001 mg
Show this value in all 34 weight & mass units
- Megagrams Mg 1e-12
- Kilograms kg 1e-9
- Hectograms hg 1e-8
- Decagrams dag 0.000 000 1
- Grams g 0.000 001
- Decigrams dg 0.000 01
- Centigrams cg 0.0001
- Milligrams mg 0.001
- Micrograms µg 1
- Nanograms ng 1000
- Picograms pg 1 000 000
- Tonnes t 1e-12
- Kilotonnes kt 1e-15
- Megatonnes Mt 1e-18
- Quintals q 1e-11
- Carats ct 0.000 005
- Pounds lb 2.20462262185e-9
- Ounces oz 3.52739619496e-8
- Drams dr 0.000 000 564 383 391 193
- Grains gr 0.000 015 432 358 352 9
- Stones st 1.57473044418e-10
- Hundredweight (US)s cwt (US) 2.20462262185e-11
- Hundredweight (UK)s cwt (UK) 1.96841305522e-11
- Short ton (US)s tn 1.10231131092e-12
- Long ton (UK)s LT 9.84206527611e-13
- Troy ounces ozt 3.21507465686e-8
- Troy pounds lbt 2.67922888072e-9
- Pennyweights dwt 0.000 000 643 014 931 373
- Slugs slug 6.85217658568e-11
- Atomic mass units u 6.02214075367e+17
- Electron masss mₑ 1.09776910426e+21
- Planck masss mₚ 0.045 946 718 347 5
- Earth masss M🜨 1.67442483507e-34
- Solar masss M☉ 5.02785431289e-40
Every row is Microgram (µg) converted through the kilogram, in exact rational arithmetic.
How to convert micrograms to milligrams
Multiply the number of micrograms by 0.001 to get milligrams.
The exact factor is 0.001 — as a fraction, 1/1000.
Microgram to Milligram conversion table
| Micrograms (µg) | Milligrams (mg) |
|---|---|
| 1 µg | 0.001 |
| 2 µg | 0.002 |
| 3 µg | 0.003 |
| 5 µg | 0.005 |
| 10 µg | 0.01 |
| 20 µg | 0.02 |
| 25 µg | 0.025 |
| 50 µg | 0.05 |
| 100 µg | 0.1 |
| 250 µg | 0.25 |
| 500 µg | 0.5 |
| 1000 µg | 1 |
Milligram to Microgram conversion table
| Milligrams (mg) | Micrograms (µg) |
|---|---|
| 1 mg | 1000 |
| 2 mg | 2000 |
| 3 mg | 3000 |
| 5 mg | 5000 |
| 10 mg | 10 000 |
| 20 mg | 20 000 |
| 25 mg | 25 000 |
| 50 mg | 50 000 |
| 100 mg | 100 000 |
| 250 mg | 250 000 |
| 500 mg | 500 000 |
| 1000 mg | 1 000 000 |
Frequently asked
How many milligrams are in a microgram?
One microgram equals 0.001 milligrams (µg → mg). That figure is exact, not rounded.
How do you convert micrograms to milligrams?
Multiply the number of micrograms by 0.001 to get milligrams.
What is 1 mg in micrograms?
One milligram is 1000 micrograms.
What is 10 µg in mg?
10 µg = 0.01 mg.