Its your actual but hidden ranking which determines players of what skill you meet in your games and also the amount of League Points (LP) you gain per win or lose per defeat. For example, if you gain about 17-20 league points per win, your MMR is normal (usual) for your current division.

What is normal MMR in lol?

Average MMR – If you are gaining and losing between 16-22 LP per game, you have an average MMR for your division. Higher MMR than your current Rank – If you are gaining more than 26 LP per win, your MMR is higher than your current Rank.

What is MMR in league?

MMR or MatchMaking Rating is a number used by League of Legends to represent a players skill level.

How is MMR determined?

How is MMR calculated? Players initially have their MMR calculated based on the wins, losses, and stats the player compiles during their placement games. From there, MMR moves up and down as the player moves through ranked matches. A win will see the player gain MMR, while a loss will see the player lose MMR.