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This article was reviewed by Grace Imson, MA and by wikiHow staff writer, Sophia Bell. Grace Imson is a math teacher with over 40 years of teaching experience. Grace is currently a math instructor at the City College of San Francisco and was previously in the Math Department at Saint Louis University. She has taught math at the elementary, middle, high school, and college levels. She has an MA in Education, specializing in Administration and Supervision from Saint Louis University.
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Converting grams (g) to milligrams (mg) is an easy task! All you need to do is multiply by the number of grams by 1,000. If you want to convert milligrams to grams, simply divide the number of milligrams by 1,000.
Grams to Milligrams
Multiply the number of grams you have by 1,000 to find out the number of milligrams in the same quantity.
Steps
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Recognize that “milli” means one-thousandth. Understanding the definition of the prefix can help you remember the difference between grams and milligrams. Since “milli” means one-thousandth, a milligram is 1/1,000 of a gram.[1] -
Multiply the number of grams (g) by 1,000 to get milligrams (mg). Multiplying by 1,000 is the same as moving the decimal point 3 spots to the right.[2]- For example, say you have 75 grams. Simply multiply 75 by 1,000, which equals 75,000. So, 75 grams (g) is equal to 75,000 milligrams (mg).[3]
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Understand that grams (g) and milligrams (mg) measure mass. Both grams and milligrams are units used to measure mass, or how heavy an object is.[4]
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Note that milligrams (mg) are smaller than grams (g). Since “milli” means “one-thousandth,” a milligram is one-thousandth the size of a gram. Therefore, there will be fewer grams than milligrams.[5] -
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Remember that milligrams (mg) and grams (g) are metric units. If you live in the United States or another country that uses the imperial measurement system, you may be unfamiliar with grams and milligrams, since they are metric units. In the U.S., ounces (oz) and pounds (lbs) are usually used to measure weight.[8]
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References
- ↑ https://mste.illinois.edu/dildine/tcd_files/metric/mass.htm
- ↑ https://mathbitsnotebook.com/Algebra1/Units/UNMetricEnglish.html
- ↑ https://www.rapidtables.com/convert/weight/gram-to-mg.html
- ↑ https://www.alamo.edu/contentassets/190ff7d408364614b893b460c598e008/statistical/math0300-metric-units-of-mass.pdf
- ↑ https://mste.illinois.edu/dildine/tcd_files/metric/mass.htm
- ↑ https://www.rapidtables.com/convert/weight/mg-to-gram.html
- ↑ https://www.rapidtables.com/convert/weight/mg-to-gram.html
- ↑ https://www.mathsisfun.com/metric-imperial-conversion-charts.html
About This Article
To convert grams to milligrams, multiply the number of grams by 1,000. Alternatively, move the decimal point 3 spots to the right. For example, if you have 75 grams, then you have 75,000 milligrams because the prefix “milli” means one-thousandth. Knowing this, you can easily convert milligrams to grams by dividing the number of milligrams by 1,000. For instance, if you have 500,000 milligrams, you have 500 grams. For more tips, like how to tell the difference between the metric and imperial systems of measurement, read on!
