Ounce to Milligram calculator (oz to mg)

Convert ounces to milligrams (oz to mg) by typing the amount of ounces in the input field below and then clicking in the "Convert" button. If you want to convert from milligrams to ounces, you can use our milligram to ounce converter.


Formula used to convert oz to mg:

F(x) = x * 28349.523125

For example, if you want to convert 1 oz to mg, just replace x by 1 [oz]:

1 oz = 1 * 28349.523125 = 28349.523125 mg


  1. Multiply the amount of ounces by 28349.523125.
  2. The result will be expressed in milligrams.

Ounce to Milligram Conversion Table

The following table will show the most common conversions for Ounces (oz) to Milligrams (mg):

Ounces (oz) Milligrams (mg)
0.001 oz 28.349523125 mg
0.01 oz 283.49523125 mg
0.1 oz 2834.9523125 mg
1 oz 28349.523125 mg
2 oz 56699.04625 mg
3 oz 85048.56937499999 mg
4 oz 113398.0925 mg
5 oz 141747.615625 mg
6 oz 170097.13874999998 mg
7 oz 198446.661875 mg
8 oz 226796.185 mg
9 oz 255145.708125 mg
10 oz 283495.23125 mg
20 oz 566990.4625 mg
30 oz 850485.69375 mg
40 oz 1133980.925 mg
50 oz 1417476.15625 mg
60 oz 1700971.3875 mg
70 oz 1984466.61875 mg
80 oz 2267961.85 mg
90 oz 2551457.08125 mg
100 oz 2834952.3125 mg

About Ounces (oz)

The ounce (symbol ℥) is a unit of mass, weight, or volume used in most British derived customary systems of measurement. One avoirdupois ounce is equal to ​1⁄16 of a common avoirdupois pound. It is commonly used in the United States to measure the weight of food, postal items, gloves, among others.

There are many ounces in current use. This are the troy ounce, the ounce-force and the fluid ounce.

About Milligrams (mg)

A milligram is a unit of weight that is based on the International System of Units. The symbol used to represent the milligram is mg. One milligram is equal to 1/1,000 grams, or 1/1,000,000 kilograms. Is often used to measure weight or mass of food, vitamins, minerals and more.

FAQs for Ounce to Milligram converter calculator

What is Ounce to Milligram converter calculator?

Ounce to Milligram converter is a free and online calculator that converts Ounces to Milligrams.

How do I use Ounce to Milligram converter?

You just have to insert the amount of Ounces you want to convert and press the "Convert" button. The amount of Milligrams will be outputed in the input field below the button.

Which browsers are supported?

All mayor web browsers are supported, including Internet Explorer, Microsoft Edge, Firefox, Chrome, Safari and Opera.

Which devices does Ounce to Milligram converter work on?

Ounce to Milligram converter calculator works in any device that supports any of the browsers mentioned before. It can be a smartphone, desktop computer, notebook, tablet, etc.