What preposition is used after to convert when speaking about turning to another use or purpose?

In general, use convert into, but speaking about turning to another use or purpose use convert to.

For example, a phrase like this: They converted their garage to a studio.
Solidify this grammar point right now
(you will be asked to create an account if you do not have one)

Learn more simple rules

Phrase the Cat inviting to practise English Phrase the Cat waving

At PhraseCat.com you can study grammar points and practise their application right away.