The numbers in French are a bit irregular and it is always advised to learn them by heart. The essential 1 to 20 numbers are described here: img:google Numbers in french from 1 to 20 0 z ér o 11 onze 1 un 12 douze 2 deux 13 treize 3 trois 14 quatorze 4 quatre 15 quinze 5 cinq ...