wikiHow Converting Grams to Milligrams Calculator To convert grams (g) to milligrams (mg), you can use the following conversion factor: 1 gram = 1000 milligrams To convert grams to milligrams, multiply the number of grams by 1000. For example: 1. Convert 5 grams to milligrams: 5 grams * 1000 = 5000 milligrams So, 5 grams is equal to 5000 milligrams. 2. Convert 2.5 grams to milligrams: 2.5 grams * 1000 = 2500 milligrams Therefore, 2.5 grams is equal to 2500 milligrams. 3. Convert 0.75 grams to milligrams: 0.75 grams * 1000 = 750 milligrams Hence, 0.75 grams is equal to 750 milligrams. Remember, when converting grams to milligrams, multiply the number of grams by 1000 to obtain the equivalent measurement in milligrams. Page