Ounces to Milligrams Conversion

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

SWAP UNITS
Results in Milligrams:
Loading content.
1 oz = 28,349.523125 mg

How to Convert Ounces to Milligrams

Scales are used to measure weight

To convert an ounce measurement to a milligram measurement, multiply the weight by the conversion ratio. One ounce is equal to 28,349.523125 milligrams, so use this simple formula to convert:

milligrams = ounces × 28,349.523125

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

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

Ounces and milligrams are both units used to measure weight. Keep reading to learn more about each unit of measure.

Ounces

One ounce is a unit of mass/weight equal to 1/16 of a pound. 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.

Milligrams

The milligram is the 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 10-3. Milligrams can be abbreviated as mg, for example 1 milligram can be written as 1 mg.

Ounce to Milligram Conversion Table

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