Grams to milligrams (g to mg) converter

You can enter a value in either the grams (g) or milligrams (mg) input fields. For an understanding of the conversion process, we include algebraic formulas.

See conversions to common Mass/Weight units and easily switch Mass/Weight units in the two tabbed section below. Use the search bar above to find additional conversions.

Tip: Click the "Swap" button to switch from converting grams to milligrams to milligrams to grams.

grams (g)

 

milligrams (mg)

 
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1 g = 1000 mg 1 mg = 0.001 g

Algebraic Steps / Dimensional Analysis Formula
g * 1000 mg
1 g
= mg

If you would like to switch between Mass/Weight units, select from the tables below

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