Help Export S Planner to Google calendar

[Firehanger]

Hi there,

I have struggled with Kies so have moved to cloud backup for all major things o my phone except my calendar. I have started off using My Calendar within S Planner, but now want to move to Google calendar.

Is there a way to export all entries from My Calendar and then import them into my Google calendar?

Then, once I have done this (assuming of course that it's possible in the first place), is there a way to make my Google calendar the default for new appointments?

Thanks

Chris