Experience points (XP) are units of measurement for your level. You gain experience when you deliver the killing blow upon a monster. Once you fill up the XP bar, you increase a level, your experience goes down to the amount the monster just gave, and the amount of XP you need to gain another level increases.
The formula is 50L + 1.1L^2, with L being your level!
For finding out total XP needed to get a level, you could either use summation or this slightly less accurate formula: (1/6)x(x+1)[1.1(2x+1)+150] or try 1/6*(Level-1)*(Level)*(1.1*(2*Level-1)+150)-(Level-1)/2+Level/20
|Level||XP to Gain Level||Total XP Needed to Reach This Level*|
- You will actually need less XP than this, due to glitches about how XP is counted when gaining levels