# ELO Rating League of Legends Calculator

The ELO rating system is a method for calculating the relative skill levels of players in two player games such as chess. It is named after its creator Arpad Elo, a Hungarian-born American physics professor. Use this simple online Elo Rating League of Legends Calculator to find the updated rating of Player 1 and Player 2. Elo rating of players can be represented by a number which can be increased or decreased depending upon the outcome of games between the players.

Code to add this calci to your website

Elo Rating League of Legends Calculator finds the updated rating of players based on their current rating. Elo rating in League of Legends is also used as a rating system for competitive multiplayer in a number of computer games. The difference in the ratings between two players serves as a predictor of the outcome of a match.

### Example:

Two chess players has a current elo rating as 5 and 3. Find the updated rating of the players?

#### Solution

Given :

K-factor = 32, Player 1 current rating = 5, Player 2 current rating = 3

Player 1 Transformed Rating = 10^{(5/400)} = 1.0292

Player 2 Transformed Rating = 10^{(3/400)} = 1.0174

Player 1 Expected Score = 1.0292 / (1.0292+1.0174) = 0.502878199574811

Player 2 Expected Score = 1.0174 / (1.0174+1.0292) = 0.49712180042518894

If Player 1 wins, Player 1 Actual Score is 1 and Player 2 Actual Score is 0

Player 1 Updated Rating = 5+32×(1-0.502878199574811) = 21

Player 2 Updated Rating = 3+32×(0-0.49712180042518894) = -13