Convert 21 Milligrams to Grams
How heavy is 21 milligrams? How much does 21 milligrams weigh in grams? 21 mg to g conversion.
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21 Milligrams =
0.021 Grams
exact result
Decimal places
Result in Plain English
21 milligrams is equal to exactly 0.021 grams.
To a Percentage
21 milligrams = 2.1% of a gram.
Result as a Fraction
21 milligrams
= 21⁄1,000 grams
In Scientific Notation
21 milligrams
= 2.1 x 101 milligrams
= 2.1 x 10-2 grams
Milligrams
A milligram is 1/1000th of a gram. It is the approximate weight of a cube of water 1 millimeter on a side.Abbreviation: mg
Grams
A gram is a unit of weight equal to 1/1000th of a kilogram. A gram is the approximate weight of a cubic centimeter of water.Abbreviation: g