Ounces (oz) to Milligrams (mg) Conversion
Ounces
The ounce (avoirdupois) is a unit of mass equal to exactly 28.349523125 grams, or one sixteenth of a pound, used in the United States and United Kingdom for food portions, postal weights, and product labelling. It must be distinguished from the troy ounce (31.1035 g), used exclusively for precious metals, and from the fluid ounce, which is a unit of volume.
Milligrams
The milligram is a unit of mass equal to one thousandth of a gram (10⁻⁶ kg) and is the standard unit of dosage in pharmacology and clinical medicine. Drug doses, vitamin quantities, and mineral recommended daily allowances are routinely expressed in milligrams, where precision is critical: in many medications the therapeutic margin is narrow, making accurate measurement a matter of patient safety.
| Ounces (oz) | Milligrams (mg) |
|---|---|
| 0.1 oz | 2,834.9523 mg |
| 1 oz | 28,349.5231 mg |
| 2 oz | 56,699.0463 mg |
| 3 oz | 85,048.5694 mg |
| 5 oz | 141,747.6156 mg |
| 10 oz | 283,495.2312 mg |
| 20 oz | 566,990.4625 mg |
| 30 oz | 850,485.6938 mg |
| 50 oz | 1,417,476.1563 mg |
| 100 oz | 2,834,952.3125 mg |
| 1000 oz | 28,349,523.125 mg |
Frequently Asked Questions (FAQ)
How many milligrams are in 1 ounces?
1 ounces (oz) is exactly 28,350 milligrams (mg).
How do I convert ounces to milligrams?
Multiply the value in ounces by 28,350 to get the result in milligrams. Or use the converter above — type any number and see the result instantly.