Ounces to Milligrams – ounce to milligram Converter
1 oz = 28349.523125 mg
Formula
mg = oz × 28349.523125
Ounces to milligrams conversion table
| ounces (oz) | milligrams (mg) |
|---|---|
| 0.5 oz | 14174.8 mg |
| 1 oz | 28349.523125 mg |
| 2 oz | 56699 mg |
| 3 oz | 85048.6 mg |
| 5 oz | 141748 mg |
| 10 oz | 283495 mg |
| 20 oz | 566990 mg |
| 25 oz | 708738 mg |
| 50 oz | 1417480 mg |
| 75 oz | 2126210 mg |
| 100 oz | 2834950 mg |
| 250 oz | 7087380 mg |
| 500 oz | 14174800 mg |
| 1000 oz | 28349500 mg |
| 5000 oz | 141748000 mg |
Ounces and milligrams are both weight units. One ounce equals 28349.523125 milligrams; enter any value above for an instant result, or use the table for common conversions.
Sanity-check examples
1 oz = 28349.5 mg10 oz = 283495 mg100 oz = 2834950 mg
Common pitfalls and look-alike units
The market jin is 500 g and the liang is 50 g (1 jin = 10 liang) — a different system from the imperial pound (1 lb ≈ 453.592 g). In traditional Chinese medicine the old liang of 31.25 g (16 liang per jin) still applies, so prescription doses must not be converted with market units.
Frequently asked questions
How many milligrams are in a ounce?
1 ounce (oz) equals 28349.523125 milligram (mg).
How do I convert ounces to milligrams?
Multiply the ounce value by 28349.523125 to get milligram — for example, 2 ounces = 56699 milligram.
How do I convert milligrams back to ounces?
1 milligram is approximately 0.000035274 ounce. Use the swap button or the reverse conversion page linked on this page.