Milligrams To Ounces Conversion (mg To Oz) - Inch Calculator

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• Milligrams to Ounces Converter
• How to Convert Milligrams to Ounces
• What Is a Milligram?
• What Is an Ounce?
• Milligram to Ounce Conversion Table
• References

Person Icon By Joe Sexton

Joe is the creator of Inch Calculator and has over 20 years of experience in engineering and construction. He holds several degrees and certifications.

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Sexton, J. (n.d.). Milligrams to Ounces Converter. Inch Calculator. Retrieved December 2, 2025, from https://www.inchcalculator.com/convert/milligram-to-ounce/

How to Convert Milligrams to Ounces

To convert a measurement in milligrams to a measurement in ounces, multiply the weight by the following conversion ratio: 3.5274E-5 ounces/milligram.

Since one milligram is equal to 3.5274E-5 ounces, you can use this simple formula to convert:

ounces = milligrams × 3.5274E-5

The weight in ounces is equal to the weight in milligrams multiplied by 3.5274E-5.

For example, here's how to convert 50,000 milligrams to ounces using the formula above.

ounces = (50,000 mg × 3.5274E-5) = 1.763698 oz

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

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.

Learn more about milligrams.

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.

Learn more about ounces.

Milligram to Ounce Conversion Table

Table showing various milligram measurements converted to ounces.

Milligrams	Ounces
1 mg	0.000035274 oz
2 mg	0.000070548 oz
3 mg	0.000106 oz
4 mg	0.000141 oz
5 mg	0.000176 oz
6 mg	0.000212 oz
7 mg	0.000247 oz
8 mg	0.000282 oz
9 mg	0.000317 oz
10 mg	0.000353 oz
100 mg	0.003527 oz
1,000 mg	0.035274 oz
10,000 mg	0.35274 oz
100,000 mg	3.5274 oz

References

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

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