Learn how to say Who, What, When, Where, Why, and How in French with this free French audio lesson. The popular way of saying it is: Pourquoi The literal translation for Pourquoi in English is For what Thus what the French are actually asking when saying. What is the correct translation of why to French? How to say why in French? How to pronounce. Many translated example sentences containing "which is why" – French-English dictionary and search engine for French translations. Need to translate "why" to French? Here are 2 ways to say it.