How to check LoL MMR: Learn how MMR (Matchmaking Rating) works in League of Legends, how it's related to the Elo system, and ways to check and improve your MMR with these tips and tools from Riot Games.
MMR (Matchmaking Rating) is a hidden number Riot uses to match you against players of similar skill. You can't see it directly, but you can estimate it from your LP gains.
How MMR Works
Win and your MMR goes up. Lose and it goes down. That's the core of it. Individual performance (KDA, CS, vision score) does not affect your MMR — only whether you won or lost, and the relative MMR of both teams. Beat a team with higher average MMR than yours and you gain more. Lose to a lower-MMR team and you lose more.
You have separate MMR values for each queue: Solo/Duo, Flex, Normal, and ARAM. They don't directly influence each other.
How to Estimate Your MMR
LP gains are the best proxy. If you're gaining more LP per win than you lose per loss — say +25/−15 — your MMR is above your visible rank and you'll climb. If the numbers are reversed (+15/−25), your MMR is below your rank and the system is pulling you down.
Third-Party MMR Checkers
Several sites estimate your MMR by analyzing your match history and opponent ranks. These are estimates, not Riot's actual number — treat them as rough guides. Riot has stated that MMR is "custom-tailored to work with backend systems" and loses context outside them.
If you want a ballpark number, free MMR checkers can show estimates for ranked, normal, and ARAM queues — just enter your Riot ID and region. Be cautious with any site that also sells boosting or accounts — those exist to funnel you into paid services, not to help you improve.
MMR Is Not Your Rank
Your rank (Gold II, Platinum IV) is a visible progression marker. Your MMR is the hidden rating that actually determines who you play against. The two can diverge — it's common to be ranked Silver while playing in Gold-MMR lobbies, especially early in a season or after placements. If your LP gains are high, your MMR is ahead and your rank will catch up. If they're low, it's the other way around.
For more on climbing and what actually moves the needle, see our guide on how to get better at League. If you want champion-specific advice for your next game, LoLTheory gives you in-game item and rune recommendations tuned to your matchup.
