"How do you spell you surname?" in French

Summary

The French translation for “How do you spell you surname?” is Comment s’écrit ton nom de famille ?. The French, Comment s’écrit ton nom de famille ?, can be broken down into 4 parts:"how?" (comment ?), "is spelled; is written" (s’écrit), "your (informal masculine singular)" (ton) and "surname" (nom de famille).