I need my iPhone calendar to sync with my iPad.

You sync both devices to the same iCloud account or another cloud service.

On both devices:

Settings > Your Name, iCloud etc.

Tap iCloud

Is Calendar turned on both devices?

It sounds like you don’t have all calendars checked in the Calendar app.

This answer is not helpful. Both my iPad and my iPhone are on the same iCloud service, and they won’t sync. I’ve tried everything, but to no avail. Some help would be appreciated.

My calendar is turned on on ipad and iphone but my events on my iphone do not show on ipad calendar. When i added an event to calendar on ipad it didn't show but did show on iphone.

How do I do that on my ipad? Is it on the calendar page where I add events? I haven't found a setting.

Just got it fixed!

Just got it working...thanks.

My iphone does not syne with my ipad. It did before recent upgrade.