Convert gram to milligram
1 g = 1,000 mg
1 g = 1,000 mg
1 g in every mass unit
| unified atomic mass unit (dalton) | 6.0221e+23 u |
| picogram | 1,000,000,000,000 pg |
| nanogram | 1,000,000,000 ng |
| microgram | 1,000,000 μg |
| milligram | 1,000 mg |
| centigram | 100 cg |
| grain | 15.432 gr |
| metric carat | 5 ct |
| gram | 1 g |
| pennyweight | 0.64301 dwt |
| dram | 0.56438 dr |
| ounce | 0.035274 oz |
| troy ounce | 0.032151 oz t |
| troy pound | 0.0026792 lb t |
| pound | 0.0022046 lb |
| kilogram | 0.001 kg |
| stone | 0.00015747 st |
| slug | 0.000068522 slug |
| US hundredweight | 0.000022046 cwt |
| UK long hundredweight | 0.000019684 cwt (UK) |
| quintal | 0.00001 q |
| US short ton | 0.0000011023 ton |
| metric tonne | 0.000001 t |
| UK long ton | 9.8421e-07 long ton |
| kilotonne | 1.0000e-09 kt |
| megatonne | 1.0000e-12 Mt |
| gigatonne | 1.0000e-15 Gt |
| Earth mass | 1.6744e-28 Mearth |
| solar mass | 5.0291e-34 Msun |
How the conversion works
Multiply by 1,000 to go from gram to milligram, or divide by it to go back. Every conversion on this site routes through the SI value (kg) rather than a table of pairwise factors, so a round-trip returns exactly what you started with.
Going the other way? milligram to gram — 1 mg = 0.001 g.
gram to milligram — common values
| 1 g | 1,000 mg |
| 2 g | 2,000 mg |
| 3 g | 3,000 mg |
| 5 g | 5,000 mg |
| 10 g | 10,000 mg |
| 15 g | 15,000 mg |
| 20 g | 20,000 mg |
| 25 g | 25,000 mg |
| 50 g | 50,000 mg |
| 75 g | 75,000 mg |
| 100 g | 100,000 mg |
| 250 g | 250,000 mg |
| 500 g | 500,000 mg |
| 1000 g | 1,000,000 mg |