I use "on my mac" calendar but I can't sync it to my iPad/iphone. Any way?
mjshack
Sure... first sign up for a free Apple iCloud account.
Now go to Calendar on the Mac and go to the File menu, then Export, then Export... and save that on the Desktop.
Now after making the iCloud account and turning on Calendar sync, go to the same File menu and import then point to the file you saved from the step above. You will be asked which calendar you want to import to... select the iCloud calendar for import.
Now delete the old On my Mac calendar after making sure everything got imported to iCloud okay.
Now to go your iPhone and turn on iCloud calendar sync and let that data replace the existing calendar data on the phone.