# Ounces to Milligrams Converter

Enter the weight in ounces below to get the value converted to milligrams.

## Result in Milligrams:

1 oz = 28,349.523125 mg
28.349523 g

Do you want to convert milligrams to ounces?

## How to Convert Ounces to Milligrams

To convert a measurement in ounces to a measurement in milligrams, multiply the weight by the following conversion ratio: 28,349.523125 milligrams/ounce.

Since one ounce is equal to 28,349.523125 milligrams, you can use this simple formula to convert:

milligrams = ounces × 28,349.523125

The weight in milligrams is equal to the weight in ounces multiplied by 28,349.523125.

For example, here's how to convert 5 ounces to milligrams using the formula above.
milligrams = (5 oz × 28,349.523125) = 141,747.615625 mg

### How Many Milligrams Are in an Ounce?

There are 28,349.523125 milligrams in an ounce, which is why we use this value in the formula above.

1 oz = 28,349.523125 mg

## What Is an Ounce?

One ounce is a unit of mass/weight equal to 1/16 of a pound or 28.349523 grams. The common ounce should not be confused with the troy ounce, which is equal to 1/12 of a troy pound.[1]

The ounce is a US customary and imperial unit of weight. Ounces can be abbreviated as oz; for example, 1 ounce can be written as 1 oz.

## What Is a Milligram?

The milligram is a unit of mass equal to 1/1,000 of a gram, or 0.0154 grains.

The milligram, or milligramme, is an SI unit of weight in the metric system. In the metric system, "milli" is the prefix for thousandths, or 10-3. Milligrams can be abbreviated as mg; for example, 1 milligram can be written as 1 mg.

## Ounce to Milligram Conversion Table

Table showing various ounce measurements converted to milligrams.
Ounces Milligrams
0.0001 oz 2.835 mg
0.0002 oz 5.6699 mg
0.0003 oz 8.5049 mg
0.0004 oz 11.34 mg
0.0005 oz 14.17 mg
0.0006 oz 17.01 mg
0.0007 oz 19.84 mg
0.0008 oz 22.68 mg
0.0009 oz 25.51 mg
0.001 oz 28.35 mg
0.002 oz 56.7 mg
0.003 oz 85.05 mg
0.004 oz 113.4 mg
0.005 oz 141.75 mg
0.006 oz 170.1 mg
0.007 oz 198.45 mg
0.008 oz 226.8 mg
0.009 oz 255.15 mg
0.01 oz 283.5 mg
0.02 oz 566.99 mg
0.03 oz 850.49 mg
0.04 oz 1,134 mg
0.05 oz 1,417 mg
0.06 oz 1,701 mg
0.07 oz 1,984 mg
0.08 oz 2,268 mg
0.09 oz 2,551 mg
0.1 oz 2,835 mg
0.2 oz 5,670 mg
0.3 oz 8,505 mg
0.4 oz 11,340 mg
0.5 oz 14,175 mg
0.6 oz 17,010 mg
0.7 oz 19,845 mg
0.8 oz 22,680 mg
0.9 oz 25,515 mg
1 oz 28,350 mg

## References

1. James Bucki, Troy Ounce vs. Ounce, The Spruce, https://www.thesprucecrafts.com/troy-ounce-vs-ounce-4588158