If you have something like Outlook or another e-mail program on the PC, you can hook your device up, then in iTUnes under 'info' choose to sync contacts and calendar to that program, then do the same with your other device. iTunes will sync with many different e-mail programs. You just have to make sure that the data is going the 'right way'...as in that it's transferring your info from the iPad to the PC.
You can also sync your calendar and contacts via iCloud. However I'd back them up first, Because iCloud has a bad habit of occasionally eating calendars or contacts (it wiped all of mine out)
So it is an option, but not 100% fool proof so I'd just backup before I experimented with it. As I understand iCloud, as long as both devices use the same Apple ID, the contacts and calendar SHOULD update on both of them. I'm not an expert on it though. Once it ate my contacts I abandoned iCloud.