Can i use the same chain?

[Feanor]

I have Shimano Ultegra that came OEM on my bike. It came with an 11-28 rear cassette, and I want to go to an 11-30. Has anyone done this and used the same chain? Or will it end up being too short. Just asking because the chain is still very new and I'm ordering the cassette now, and wanted to know if I should order a new chain as well (Plus other items I'm not telling my wife about LoL!)

Thanks in Advance

 

[dabac]

There’s no set answer to that. It depends on how tight the chain was initially cut.