Convert ounce to milligram
1 oz = 28,349.52313 mg
sig figs
1 oz = 28,300 mg
1 oz in every mass unit
| unified atomic mass unit (dalton) | 1.71e+25 u |
| picogram | 28,300,000,000,000 pg |
| nanogram | 28,300,000,000 ng |
| microgram | 28,300,000 μg |
| milligram | 28,300 mg |
| centigram | 2,830 cg |
| grain | 438 gr |
| metric carat | 142 ct |
| gram | 28.3 g |
| pennyweight | 18.2 dwt |
| dram | 16 dr |
| ounce | 1 oz |
| troy ounce | 0.911 oz t |
| troy pound | 0.076 lb t |
| pound | 0.0625 lb |
| kilogram | 0.0283 kg |
| stone | 0.00446 st |
| slug | 0.00194 slug |
| US hundredweight | 0.000625 cwt |
| UK long hundredweight | 0.000558 cwt (UK) |
| quintal | 0.000283 q |
| US short ton | 0.0000313 ton |
| metric tonne | 0.0000283 t |
| UK long ton | 0.0000279 long ton |
| kilotonne | 2.83e-08 kt |
| megatonne | 2.83e-11 Mt |
| gigatonne | 2.83e-14 Gt |
| Earth mass | 4.75e-27 Mearth |
| solar mass | 1.43e-32 Msun |
How the conversion works
Multiply by 28,349.52313 to go from ounce 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 ounce: 1 mg = 0.00003527396195 oz.
ounce to milligram: common values
| 1 oz | 28,349.523 mg |
| 2 oz | 56,699.046 mg |
| 3 oz | 85,048.569 mg |
| 5 oz | 141,747.62 mg |
| 10 oz | 283,495.23 mg |
| 15 oz | 425,242.85 mg |
| 20 oz | 566,990.46 mg |
| 25 oz | 708,738.08 mg |
| 50 oz | 1,417,476.2 mg |
| 75 oz | 2,126,214.2 mg |
| 100 oz | 2,834,952.3 mg |
| 250 oz | 7,087,380.8 mg |
| 500 oz | 14,174,762 mg |
| 1000 oz | 28,349,523 mg |