One gram is equal to 1,000 milligrams. The conversion factor for grams to milligrams is 1,000, so to determine the number of milligrams from grams, simply multiply the number of grams by 1,000.
Grams and milligrams are both units of mass in the metric system. The abbreviation for the gram is "g," while the abbreviation for milligram is "mg." Grams are a very common unit of measurement used in everyday life, and milligrams are typically used for smaller units of mass such as with medications and in pharmacies. The kilogram is another common unit of mass. One kilogram equals 1,000 grams, so to determine the number of kilograms from grams, divide the number of grams by 1,000.
1000mg.
http://wiki.answers.com/Q/How_much_does_1_gram_equ...

There are 1000 milligrams in 1 gram. The word 'Milli' means one tho...
http://www.chacha.com/question/howmanymilligrams...

1000 learn about the metric system a bit or take a chemistry course. Honestly, in case like that unless it is IV a pharmacist will adjust the dose to fit the pill given.
http://answers.yahoo.com/question/index?qid=200701...

5 grams is equal to 5,000 milligrams. There is 1,000 milligrams in just one gram. More conversions?
http://www.kgbanswers.com/whatamountofmilligram...
