I just copied everything in excel. The best formula I could get out of it was: y = 0,0011x^6 - 0,3331x^5 + 37,596x^4 - 2009,7x^3 + 50770x^2 - 520060x + 110^6 R² = 0,99961 So you can use that as nearly accurate to calculate :P It isn't 100% accurate though (you would then get R²=1) However I did get an accurate formula for the experience difference: y = 83,463 e^0,0989x R² = 1 When x=0 it tells the difference between level 0 and 1, x=1 tells the difference between level 1 and 2 and so on. It may not be 100% accurate at the lower levels because of the rounding system that jagex uses. edit: nvm it isn't as accurate as I thought, though it is pretty near the actual formula, I think jagex rouding everything down screwed up my excel results. Edit: @Suomi Don't let the opinion of others change who you are or what you do, it is your life not theirs. Second edit: @the posters below Ok, scrap the first formula, but the second one is pretty much accurate (and that R^2 of the second one does say something, as it is a exponential formula). I think the real formula should be somewhere near my formula props for trying to get an exact calculation for spreadsheets... but on the page where you got the examples of xp lvls 1-200 they have the excel formula :-P