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ELO Calculator

See exactly how many rating points players win or lose after a match

ELO is a rating system that measures player skill. Win against someone better than you? You gain more points. Lose to someone worse? You lose more. The system adjusts so the ratings reflect who's actually winning.

Try a scenario

Points gained depend on opponent strength — beat a stronger player, gain more

New player — rating changes are larger for the first 7 games

New player — rating changes are larger for the first 7 games

Player 1 Wins

Player 1Winner
+20
Player 2
-20
P1: K=40NEWP2: K=40NEW

Player 2 Wins

Player 1
-20
Player 2Winner
+20
P1: K=40NEWP2: K=40NEW