Can You Convert Canva to Keynote?
Keynote is a popular presentation software developed by Apple and launched for Mac. Here's a short introductory video to the software. It also works for Windows.
Can You Convert Canva to Keynote?
There is no official integration between Canva and Keynote, so you're not really able to convert Keynote presentations to Canva or the other way around.
You're stuck with having to chose between either one of them unfortunately.
You could try to export your Canva presentation to PPT and from there follow this tutorial to open it in Keynote, but it's really not worth the hassle in my opinion: