Milligrams To Grams Conversion (mg To G) - Inch Calculator

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• Milligrams to Grams Converter
• How to Convert Milligrams to Grams
• What Is a Milligram?
• What Is a Gram?
• Milligram to Gram Conversion Table

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 Grams Converter. Inch Calculator. Retrieved December 18, 2025, from https://www.inchcalculator.com/convert/milligram-to-gram/

How to Convert Milligrams to Grams

To convert a measurement in milligrams to a measurement in grams, divide the weight by the following conversion ratio: 1,000 milligrams/gram.

Since one gram is equal to 1,000 milligrams, you can use this simple formula to convert:

grams = milligrams ÷ 1,000

The weight in grams is equal to the weight in milligrams divided by 1,000.

For example, here's how to convert 5,000 milligrams to grams using the formula above.

grams = (5,000 mg ÷ 1,000) = 5 g

Milligrams and grams 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 a Gram?

A gram is a unit of mass equal to 1/1,000 of a kilogram or 0.035274 ounces, and is equivalent to the mass of one cubic centimeter, or one milliliter, of water.

The gram, or gramme, is an SI unit of weight in the metric system. Grams can be abbreviated as g; for example, 1 gram can be written as 1 g.

Learn more about grams.

Milligram to Gram Conversion Table

Table showing various milligram measurements converted to grams.

Milligrams	Grams
1 mg	0.001 g
2 mg	0.002 g
3 mg	0.003 g
4 mg	0.004 g
5 mg	0.005 g
6 mg	0.006 g
7 mg	0.007 g
8 mg	0.008 g
9 mg	0.009 g
10 mg	0.01 g
20 mg	0.02 g
30 mg	0.03 g
40 mg	0.04 g
50 mg	0.05 g
60 mg	0.06 g
70 mg	0.07 g
80 mg	0.08 g
90 mg	0.09 g
100 mg	0.1 g
200 mg	0.2 g
300 mg	0.3 g
400 mg	0.4 g
500 mg	0.5 g
600 mg	0.6 g
700 mg	0.7 g
800 mg	0.8 g
900 mg	0.9 g
1,000 mg	1 g

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