Convert mg to mcg
1 milligram equals 1,000 micrograms. Enter a value below to convert instantly.
Need the other direction? Convert microgram to milligram →
Formula
Multiply the number of milligrams by 1000 to get micrograms.
Step by step
- Start with 1 mg.
- Multiply by the conversion factor 1000.
- 1 × 1000 = 1,000 µg.
Milligrams to Micrograms conversion table
| Milligrams (mg) | Micrograms (µg) |
|---|---|
| 1 | 1,000 |
| 2 | 2,000 |
| 3 | 3,000 |
| 5 | 5,000 |
| 10 | 10,000 |
| 20 | 20,000 |
| 50 | 50,000 |
| 100 | 100,000 |
| 500 | 500,000 |
| 1,000 | 1,000,000 |
Convert Milligram to other weight & mass units
1 mg expressed in every other weight & mass unit on this site.
- Kilogram kg 0.000001
- Gram g 0.001
- Hectogram hg 0.00001
- Dekagram dag 0.0001
- Decigram dg 0.01
- Centigram cg 0.1
- Milligram mg 1
- Microgram µg 1,000
- Nanogram ng 1,000,000
- Picogram pg 1,000,000,000
- Femtogram fg 1,000,000,000,000
- Attogram ag 1e+15
- Petagram Pg 1e-18
- Exagram Eg 1e-21
- Metric Ton t 1e-9
- Kiloton (metric) kt 1e-12
- Megaton (metric) Mt 1e-15
- Quintal (metric) q 1e-8
- Carat ct 0.005
- Pound lb 0.0000022046226
- Ounce oz 0.000035273962
- Dram dr 0.00056438339
- Grain gr 0.015432358
- Stone st 1.5747304e-7
- Stone (US) st (US) 1.7636981e-7
- Quarter (UK) qr (UK) 7.8736522e-8
- Quarter (US) qr (US) 8.8184905e-8
- Hundredweight (UK) cwt (UK) 1.9684131e-8
- Hundredweight (US) cwt (US) 2.2046226e-8
- US Short Ton ton (US) 1.1023113e-9
- UK Long Ton ton (UK) 9.8420653e-10
- Kip kip 2.2046226e-9
- Slug slug 6.8521766e-8
- Hyl (kgf·s²/m) hyl 1.0197162e-7
- Assay Ton (US) AT (US) 0.000034285714
- Assay Ton (UK) AT (UK) 0.000030612245
- Troy Pound lb t 0.0000026792289
- Troy Ounce oz t 0.000032150747
- Pennyweight dwt 0.00064301493
- Scruple (apothecary) s.ap 0.00077161792
- Dram (apothecary) dr t 0.00025720597
- Atomic Mass Unit u 6.0221408e+20
- Electron Mass (rest) mₑ 1.0977691e+24
- Proton Mass mₚ 5.9786374e+20
- Neutron Mass mₙ 5.9704077e+20
- Muon Mass mµ 5.3091755e+21
- Deuteron Mass m_d 2.9908035e+20
- Planck Mass mP 45.946718
- Earth's Mass M⊕ 1.6744248e-31
- Sun's Mass M☉ 5.0278543e-37
- Talent (Biblical Hebrew) talent (He) 2.9239766e-8
- Mina (Biblical Hebrew) mina (He) 0.000001754386
- Shekel (Biblical Hebrew) shekel 0.000087719298
- Bekan (Biblical Hebrew) bekan 0.0001754386
- Gerah (Biblical Hebrew) gerah 0.001754386
- Talent (Biblical Greek) talent (Gk) 4.9019608e-8
- Mina (Biblical Greek) mina (Gk) 0.0000029411765
- Tetradrachma (Biblical Greek) tetradrachma 0.000073529412
- Didrachma (Biblical Greek) didrachma 0.00014705882
- Drachma (Biblical Greek) drachma 0.00029411765
- Denarius (Biblical Roman) denarius 0.00025974026
- Assarion (Biblical Roman) assarion 0.0041558442
- Quadrans (Biblical Roman) quadrans 0.016623363
- Lepton (Biblical Roman) lepton 0.033246781
- Gwan 관 2.6666667e-7
- Geun (600 g, meat) 근 0.0000016666667
- Geun (375 g, produce) 근 (채소) 0.0000026666667
- Nyang 냥 0.000026666667
- Don 돈 0.00026666667
- Pun (mass) 푼 0.0026666667
About the milligram
The milligram (mg) is a SI unit of weight & mass.
About the microgram
The microgram (µg) is a SI unit of weight & mass.
Where this conversion is used
Converting milligrams to micrograms 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 micrograms are in a milligram?
One milligram equals 1,000 micrograms.
How do you convert milligrams to micrograms?
Multiply the number of milligrams by 1000 to get micrograms.
What is 1 microgram in milligrams?
One microgram equals 0.001 milligrams.
When would I convert milligrams to micrograms?
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.