If you have ever won a game in League of Legends and received only 14 LP while a friend in the same rank got 22, you have already felt the effect of MMR. It does not appear anywhere on your screen, it has no visible number on your profile, but it controls almost everything about how your ranked experience behaves: how much LP you gain per win, how much you lose per defeat, who you play against, and how fast or slow you climb.
This guide explains what MMR is, how it works in practice, how to tell if yours is low, and what you can do to fix it.
What Is MMR?
MMR stands for Match Making Rating. It is an internal number used by Riot Games that represents your actual skill level as a player, independently from the rank displayed on your account.
While your rank (Iron, Bronze, Silver, Gold, and so on) is what you and other players can see, MMR is what the system uses to:
- Find opponents of similar strength for your matches
- Calculate how much LP you earn per win
- Calculate how much LP you lose per defeat
- Determine whether you should climb faster or slower
Think of MMR as your real grade and your rank as the grade on your report card. The two can be aligned or completely out of sync.
MMR vs Rank: What Is the Difference?
| Feature | MMR | Rank |
|---|---|---|
| Visible to the player | No | Yes |
| What it represents | True skill level | Progression in the league system |
| How it changes | Every match | When you gain or lose enough LP |
| Affected by | Wins and losses | LP gained and lost |
| Resets each season | Partially (soft reset) | Partially (soft reset) |
How MMR Goes Up and Down
The logic behind MMR is straightforward:
- Win: your MMR goes up
- Loss: your MMR goes down
- Win against players with higher MMR than yours: your MMR goes up more
- Loss against players with lower MMR than yours: your MMR drops more
The exact amount of variation is not disclosed by Riot, but the principle is that of an Elo system (the same used in chess): beating someone considered stronger rewards you more, and losing to someone considered weaker penalizes you more.
How to Tell If Your MMR Is Low
Your MMR does not appear in the game client, but you can infer your situation from how much LP you are gaining and losing:
- MMR aligned with your rank: you gain and lose similar amounts, such as 20 LP per win and 18 LP per loss
- MMR above your rank: you gain more LP than you lose, such as 25 per win and 14 per loss. The game is pushing you upward because your MMR says you play above your current rank
- MMR below your rank: you lose more LP than you gain, such as 14 per win and 22 per loss. The game is resisting your climb because your MMR says you play below your current rank
If you are consistently gaining fewer LP than you lose, your MMR is low relative to your current rank.
Why Does MMR Fall Behind?
MMR can fall out of sync with your rank for a few common reasons:
- Loss streaks: losing many games in a row drops MMR faster than your rank falls, creating a gap
- Hard-earned promotions: reaching a new rank at the limit can place you in territory where your MMR does not yet match the new division
- Inactivity: taking a long break and returning after a soft reset with lower MMR than before
- Being carried: winning LP without the corresponding MMR growth when your personal performance does not reflect the wins
How to Fix Low MMR
There is no shortcut to recovering MMR. The only path is winning games consistently. A few practices help speed up the process:
- Play fewer champions: mastering one or two champions increases your win rate more predictably than rotating between many
- Avoid tilting: a streak of three or four consecutive losses drops MMR quickly. Taking a break after two consecutive losses is a common practice among players who actively manage their MMR
- Play during peak hours: more players in the queue pool creates fairer matchmaking, which means more consistent wins for players performing above average in their bracket
- Never leave a game: the leaver penalty directly affects MMR and LP
Does MMR Reset Each Season?
Yes, partially. At the start of each season, Riot applies a soft reset to MMR. This means your MMR does not go to zero, but it is compressed toward the average. Players with very high MMR come down slightly and players with very low MMR come up slightly. This is what makes placement matches meaningful at the start of each season.
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Pro Tips: Managing Your MMR in LoL
- Do not play ranked when you are tilted: emotional state affects decision quality. Games played on tilt have lower win rates, which drops MMR faster than a steady session would.
- Use op.gg or similar tools to estimate your MMR: third-party sites like op.gg and u.gg calculate an MMR estimate based on your recent match history. These are not exact values but give a reasonable indication of where you stand.
- Prioritize win rate, not game volume: 60 games at 55% win rate builds MMR much faster than 200 games at 51%.
FAQ: MMR in League of Legends
- Can I see my MMR in the client? No. Riot does not display MMR directly. Third-party sites like op.gg calculate an estimate based on your match history.
- Are normal and ranked MMR separate? Yes. LoL maintains separate MMR pools for normal games, ranked solo/duo, and ranked flex.
- Does playing with friends affect my MMR? Yes. When you play duo, the system accounts for the MMR difference between both players and may adjust LP gains and losses for those matches.
League of Legends and related marks are trademarks of Riot Games. Used for informational and educational purposes only.
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