Convert mcg to mg
1 microgram equals 0.001 milligrams. Enter a value below to convert instantly.
Need the other direction? Convert milligram to microgram →
Formula
Multiply the number of micrograms by 0.001 to get milligrams.
Step by step
- Start with 1 µg.
- Multiply by the conversion factor 0.001.
- 1 × 0.001 = 0.001 mg.
Micrograms to Milligrams conversion table
| Micrograms (µg) | Milligrams (mg) |
|---|---|
| 1 | 0.001 |
| 2 | 0.002 |
| 3 | 0.003 |
| 5 | 0.005 |
| 10 | 0.01 |
| 20 | 0.02 |
| 50 | 0.05 |
| 100 | 0.1 |
| 500 | 0.5 |
| 1,000 | 1 |
Convert Microgram to other weight & mass units
1 µg expressed in every other weight & mass unit on this site.
- Kilogram kg 1e-9
- Gram g 0.000001
- Hectogram hg 1e-8
- Dekagram dag 1e-7
- Decigram dg 0.00001
- Centigram cg 0.0001
- Milligram mg 0.001
- Microgram µg 1
- Nanogram ng 1,000
- Picogram pg 1,000,000
- Femtogram fg 1,000,000,000
- Attogram ag 1,000,000,000,000
- Petagram Pg 1e-21
- Exagram Eg 1e-24
- Metric Ton t 1e-12
- Kiloton (metric) kt 1e-15
- Megaton (metric) Mt 1e-18
- Quintal (metric) q 1e-11
- Carat ct 0.000005
- Pound lb 2.2046226e-9
- Ounce oz 3.5273962e-8
- Dram dr 5.6438339e-7
- Grain gr 0.000015432358
- Stone st 1.5747304e-10
- Stone (US) st (US) 1.7636981e-10
- Quarter (UK) qr (UK) 7.8736522e-11
- Quarter (US) qr (US) 8.8184905e-11
- Hundredweight (UK) cwt (UK) 1.9684131e-11
- Hundredweight (US) cwt (US) 2.2046226e-11
- US Short Ton ton (US) 1.1023113e-12
- UK Long Ton ton (UK) 9.8420653e-13
- Kip kip 2.2046226e-12
- Slug slug 6.8521766e-11
- Hyl (kgf·s²/m) hyl 1.0197162e-10
- Assay Ton (US) AT (US) 3.4285714e-8
- Assay Ton (UK) AT (UK) 3.0612245e-8
- Troy Pound lb t 2.6792289e-9
- Troy Ounce oz t 3.2150747e-8
- Pennyweight dwt 6.4301493e-7
- Scruple (apothecary) s.ap 7.7161792e-7
- Dram (apothecary) dr t 2.5720597e-7
- Atomic Mass Unit u 6.0221408e+17
- Electron Mass (rest) mₑ 1.0977691e+21
- Proton Mass mₚ 5.9786374e+17
- Neutron Mass mₙ 5.9704077e+17
- Muon Mass mµ 5.3091755e+18
- Deuteron Mass m_d 2.9908035e+17
- Planck Mass mP 0.045946718
- Earth's Mass M⊕ 1.6744248e-34
- Sun's Mass M☉ 5.0278543e-40
- Talent (Biblical Hebrew) talent (He) 2.9239766e-11
- Mina (Biblical Hebrew) mina (He) 1.754386e-9
- Shekel (Biblical Hebrew) shekel 8.7719298e-8
- Bekan (Biblical Hebrew) bekan 1.754386e-7
- Gerah (Biblical Hebrew) gerah 0.000001754386
- Talent (Biblical Greek) talent (Gk) 4.9019608e-11
- Mina (Biblical Greek) mina (Gk) 2.9411765e-9
- Tetradrachma (Biblical Greek) tetradrachma 7.3529412e-8
- Didrachma (Biblical Greek) didrachma 1.4705882e-7
- Drachma (Biblical Greek) drachma 2.9411765e-7
- Denarius (Biblical Roman) denarius 2.5974026e-7
- Assarion (Biblical Roman) assarion 0.0000041558442
- Quadrans (Biblical Roman) quadrans 0.000016623363
- Lepton (Biblical Roman) lepton 0.000033246781
- Gwan 관 2.6666667e-10
- Geun (600 g, meat) 근 1.6666667e-9
- Geun (375 g, produce) 근 (채소) 2.6666667e-9
- Nyang 냥 2.6666667e-8
- Don 돈 2.6666667e-7
- Pun (mass) 푼 0.0000026666667
About the microgram
The microgram (µg) is a SI unit of weight & mass.
About the milligram
The milligram (mg) is a SI unit of weight & mass.
Where this conversion is used
Converting micrograms to milligrams comes up when tracking body weight, shipping parcels, cooking, and dosing in fitness or nutrition. In everyday language 'weight' usually means mass; true weight is a force and is handled in the Force category.
Related conversions
Frequently asked questions
How many milligrams are in a microgram?
One microgram equals 0.001 milligrams.
How do you convert micrograms to milligrams?
Multiply the number of micrograms by 0.001 to get milligrams.
What is 1 milligram in micrograms?
One milligram equals 1,000 micrograms.
When would I convert micrograms to milligrams?
This conversion is common when tracking body weight, shipping parcels, cooking, and dosing in fitness or nutrition.
Conversion factors are based on internationally agreed unit definitions. See our methodology and sources for details on how these values are verified.