Ounces to Milligrams Converter
CommonKilograms, pounds, ounces, stones and more.
How to convert Ounces to Milligrams
Multiply the ounces value by 28,349.5: 1 oz = 28,349.5 mg. Going the other way, 1 mg = 3.5274e-5 oz, so divide by 28,349.5 or use the Milligrams to Ounces converter.
About these units
Ounces (oz)
An avoirdupois ounce is one sixteenth of a pound, about 28.35 grams. It is used for food portions and postal weights, and is not the same as a fluid ounce, which measures volume.
Milligrams (mg)
A milligram is one thousandth of a gram. Medication doses and vitamin contents are usually stated in milligrams.
Ounces to Milligrams conversion table
| Ounces (oz) | Milligrams (mg) |
|---|---|
| 1 oz | 28,349.5 mg |
| 2 oz | 56,699 mg |
| 3 oz | 85,048.6 mg |
| 4 oz | 113,398 mg |
| 5 oz | 141,748 mg |
| 10 oz | 283,495 mg |
| 20 oz | 566,990 mg |
| 25 oz | 708,738 mg |
| 50 oz | 1.4175e+6 mg |
| 100 oz | 2.835e+6 mg |
| 500 oz | 1.4175e+7 mg |
| 1,000 oz | 2.835e+7 mg |
More ounces conversions
- Ounces to Pounds1 oz = 0.0625 lb
- Ounces to Stones1 oz = 0.00446429 st
- Ounces to Tons US1 oz = 3.125e-5 ton (US)
- Ounces to Tons UK1 oz = 2.7902e-5 ton (UK)
- Ounces to Grains1 oz = 437.5 gr
- Ounces to Hundredweights US1 oz = 0.000625 cwt (US)
- Ounces to Hundredweights UK1 oz = 0.000558036 cwt (UK)
- Ounces to Drams1 oz = 16 dr
- Ounces to Kilograms1 oz = 0.0283495 kg
- Ounces to Atomic Mass Units1 oz = 1.7072e+25 u
- Ounces to Troy Ounces1 oz = 0.911458 oz t
- Ounces to Earth Mass1 oz = 4.7439e-27 M⊕
See every unit on the Weight Converter.