Ranked system guide

What is MMR in League of Legends?

MMR, or matchmaking rating, is the number League keeps hidden behind your rank. It decides who you're matched against and how much LP each win and loss is worth. When it drifts away from your rank you feel it straight away, 15 LP for a win and 22 for a loss.

How MMR actually works

Every account carries two numbers. One is the rank you see. The other is MMR, which Riot never shows. Wins push both up and losses pull both down, but not at the same speed, so after a few bad weeks they can sit a long way apart.

LP is how the game closes that gap. If your MMR is above your rank, you're treated as underranked and each win pays more LP. If it's below, you're treated as overranked, so wins pay less and losses cost more.

That's why two players in the same division can see very different numbers. One gets 22 LP a win, the other 14. Same badge, different MMR.

Riot also uses MMR where you can't see it. Its own support page on ranked queues says an Emerald to Diamond II player can't duo with someone whose MMR is Master-tier, whatever rank that player shows. The full table is in our guide to League of Legends ranks.

Because you play every game, duo boosting moves your MMR along with your rank, which is why a duo climb tends to hold.

What low MMR actually looks like

Look at your LP, not your rank. Winning 15 to 17 a game and losing 19 to 22 means your MMR sits below your division.

Most players make it worse the same way. LP is draining, so they queue more, on the theory that more games means more wins.

It usually goes the other way. Games played tilted or tired after a loss streak lose more often, MMR drops again and the LP gap widens. The harder the grind, the deeper the hole.

Nothing's broken here. The system is doing its job, and your MMR has to come back up before extra games start paying.

How to check your MMR

Riot doesn't publish MMR, so any number you find is an estimate. WhatIsMyMMR (whatismymmr.com) is the tool most players use. Enter your Riot ID and server and it estimates your rating from recent games and the players you were matched with.

Treat it as a direction rather than a reading. If it puts you well below your division, that's your LP pattern explained.

The right way to fix damaged MMR

Only winning fixes it, and winning over a decent run of games. There's no trick, though there is a right order to do things in.

Stop queueing on a loss streak. Each extra loss sinks the rating further, so the right move after two or three in a row is to step away and come back fresh.

A streak beats volume. Five wins in a row moves MMR more than fifteen games at a 53% win rate, because the system rewards results that look like you belong higher.

When LP gains have been stuck at 15 to 17 for weeks, the quickest correction is usually a couple of divisions of steady winning with a stronger player on your team. That tends to bring gains back to 19 to 21 without hundreds of solo games.

For a broader look at what holds players back at each rank, read our guide on how to climb faster in League of Legends.

When duo boosting solves the MMR problem

Stuck at 15 to 17 LP a win, solo grinding is the slowest fix there is. Your win rate isn't high enough to move the rating much.

Two to four divisions with a high-elo partner gives you the steady winning MMR needs. Your side has the edge in every game, win rate rises and LP follows.

After that, solo queue starts paying again, because the system rewards your wins properly instead of pulling you back to where it thought you belonged.

To get the most out of your duo sessions, read about the best duo combinations for your role.

For players who prefer a defined number of wins rather than a rank route, our net wins duo boost delivers the same consistent win streak in a flexible format.

FAQ