What is 6.50 in French?

There are a couple of ways to say 6.50 in French, depending on the context:

* Six virgule cinquante: This is the most literal translation and is used in formal or technical contexts.

* Six euros cinquante: This is the most common way to say 6.50 euros in everyday speech.

* Six cinquante: This is a shortened version of the previous option, also common in everyday speech.

So, depending on the situation, you can choose the most appropriate translation.