I have a Garmin bike computer that tells me grade percentage and how many feet I've ascended and descended. Today I climbed 2,550 feet during my 55 mile ride. I wish I would have looked at the grade of a particularly steep hill I climbed, but sometimes it's better to just not know! I used to look all the time, but lately I just ignore it and climb the best I can. But it's nice to have an idea what people are talking about when they say 7% or whatever.