Experience (champion)

Champion Experience is the way the Champions level up periodically. This allows them access to new abilities or higher ranks of existing abilities. Also many base stats and runes scale as your champion levels.

Gaining Experience
There are various forms to get experience:
 * Champion Kills: Killing an enemy champion rewards a player with an amount of experience determined by the level of the champion slain. The experience gained is equal to 75% of the total experience required for a champion to go from the slain champion’s current level to the next level up. In other words, if a level 7 champion is slain, the total experience gained is 75% of the total experience required for a champion to go from level 7 to level 8, or 862.5 experience points. The experience reward will be increased if there is a positive level difference between champions (e.g. a level 5 champion killing a level 7 champion) and decreased if the level difference is negative.
 * Assists: A champion is given an assist after damaging an enemy champion that is then killed within 10 seconds. A champion granted an assist will evenly split the total experience reward for killing the enemy champion with all other players that received an assist or landed the killing blow and are within 1600 range of the killing blow.
 * Minions: Killing minions in League of Legends grants an amount of experience upon their death. The experienced gained by the champion is determined by the type of minion as well as the current length of the game. Experience from minion deaths is split between all champions within 1600 range.
 * Turrets: Whenever an enemy turret is destroyed, all champions of the team are granted experience.
 * Neutral Monster: Each type of neutral monster in League of Legends gives a different amount of experience upon death. Only champions of the same team as the champion that landed the killing blow on the monster are granted experience. Experience points are split evenly among all nearby allied champions.
 * Epic Monster: Epic monsters grant experience rewards for an entire team of champions regardless of the location or status of those champions.

Increasing Experience Gain
Note that experience gain stacks additively.

Masteries

 * in the second tier of Utility tree increases experience gain by (1.25/2.5/3.75/5)%.

Runes

 * runes increases experience gain.

Hero Abilities

 * passive increases his allies experience gain by 8%.

In addition, when more than 1 champion is sharing experience, 10% extra experience is split among all targets.
 * Two champions each gain 55%, up from 50%.
 * Three champions each gain 36.7%, up from 33.3%.
 * Four champions each gain 27.5%, up from 25%.
 * Five champions each gain 22%, up from 20%.

Leveling Up
The following describes the amount of experience required to go from one level to the next: