Convert milligram to gram
1 mg = 0.001 g
1 mg = 0.001 g
1 mg in every mass unit
| microgram | 1,000 μg |
| milligram | 1 mg |
| gram | 0.001 g |
| kilogram | 0.000001 kg |
| metric tonne | 1.00e-09 t |
| ounce | 0.0000353 oz |
| pound | 0.0000022 lb |
| stone | 1.57e-07 st |
| US short ton | 1.10e-09 ton |
| grain | 0.0154 gr |
| unified atomic mass unit (dalton) | 6.02e+20 u |
How the conversion works
Multiply by 0.001 to go from milligram to gram, 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? gram to milligram — 1 g = 1,000 mg.
milligram to gram — common values
| 1 mg | 0.001 g |
| 2 mg | 0.002 g |
| 3 mg | 0.003 g |
| 5 mg | 0.005 g |
| 10 mg | 0.01 g |
| 15 mg | 0.015 g |
| 20 mg | 0.02 g |
| 25 mg | 0.025 g |
| 50 mg | 0.05 g |
| 75 mg | 0.075 g |
| 100 mg | 0.1 g |
| 250 mg | 0.25 g |
| 500 mg | 0.5 g |
| 1000 mg | 1 g |