Convert from gros to once [France]

Unit Definition (gros)
The gros is a traditional French weight unit equal to 3 deniers (about 3.824 grams).

Unit Definition (once [France])
The onça, once, oncia, onza is traditional names for the ounce unit in Romance languages. The French once equals 1/16 livre or about 30.59 grams (1.079 ounce).