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

Player 1

Current Rating

Games Played

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

Player 2

Current Rating

Games Played

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

Player 1 Wins

Player 1Winner

+201200 → 1220

Player 2

-201200 → 1180

P1: K=40NEWP2: K=40NEW

Player 2 Wins

Player 1

-201200 → 1180

Player 2Winner

+201200 → 1220

P1: K=40NEWP2: K=40NEW