Hi - when do you use "convert into", and when "convert to"?
'Convert to' is used more generally.
You can convert a car to LP gas (to use LP gas), or but you can't convert it into LP gas.
You can convert (change) a $10 note to two $5 notes; but it's illegal to try to convert it into two $5s.
Probably not everyone makes this distinction; but if you need one, that's it.