Convert ounces to milligrams (oz to mg) and milligrams to ounces (mg to oz) Online Conversion Calculator - Converter

This calculator-converter provides conversion of ounces to milligrams (oz to mg) and backwards milligrams to ounces (mg to oz).

Enter ounces or milligrams for conversion:

Select conversion type:

Rounding options:

Conversion Chart / Table
 ounce to milligrams Conversion Chart / Table: milligrams to ounces Conversion Chart / Table: oz = mg 1.0 = 28349.5 2.0 = 56699.0 3.0 = 85048.6 4.0 = 113398.1 5.0 = 141747.6 ounce = milligrams 6.0 = 170097.1 7.0 = 198446.7 8.0 = 226796.2 9.0 = 255145.7 10  = 283495.2 mg = oz 1.0 = 0.00003527 2.0 = 0.00007054 3.0 = 0.00010582 4.0 = 0.00014109 5.0 = 0.00017636 milligrams = ounces 6.0 = 0.00021164 7.0 = 0.00024691 8.0 = 0.00028219 9.0 = 0.00031746 10  = 0.00035273

1 ounce (oz) = 28 349.5231 milligrams (mg) = 0.0283495231 kilograms (kg) = 28.3495231 grams (g) = 0.0625 pounds (lb) = 437.5 grains (gr). In 1958 the US and countries of the Commonwealth (Canada, Australia and New Zealand) defined the mass of the international avoirdupois ounce is defined to be equal to 28.349523 grams.