how many milligrams in one gram
'milli' is the SI (1) prefix meaning 1 / 1000 , so there are 1000 milligrams in one gram. . Note: (1) SI means the International System of Units (' SI ' is accepted aâ¦bbreviation for the French term 'SystÃ£Â¨me international d'unitÃÂ©s' ) 1000 1,000mg per gram. 1 gram is 1000 milligrams.