How MMR Works in ARAM
Verified for patch 26.21
ARAM has its own hidden MMR, entirely separate from your ranked rating. No rank, no LP, no badge is attached to it — only a matchmaking number that rises and falls with your ARAM results. That independence explains the most common complaint about the mode: a Gold solo-queue player can routinely land in ARAM lobbies that play like Diamond, because their ARAM rating climbed on its own for hundreds of games.
One rating per queue
League keeps a separate MMR for every queue it matches you in: ranked solo/duo, ranked flex, normals and ARAM each track you independently. Winning in ARAM raises your ARAM number and leaves everything else untouched; a brutal ranked losing streak does not follow you to the Abyss. There is no shared "account MMR" sitting above them, which is why the same player can feel two tiers apart depending on which queue they open.
Why ARAM MMR drifts upward
ARAM is where people play when they do not want to play ranked, and they do it for years. Volume accumulates quietly: a casual player who queues two ARAMs an evening is past a thousand games well before they notice. ARAM also has no season ceremony — no reset, no placements, no soft compression pulling everyone back toward the middle each year like the ranked ladder gets. The rating simply keeps whatever it earned. Add the mode's reputation for attracting one-trick specialists with a hundred games on the same champion, and lobbies that feel harder than your rank are not a bug: your ARAM rating is genuinely higher than your ranked one.
What moves it
The result, and only the result. Your 40-kill game on a poke champion counts exactly as much as the teammate who went 2/11 on the winning side. Because ARAM games are short — around 21 minutes against 29 for a ranked game — the rating also moves faster in wall-clock terms than ranked does, which is part of why a bad evening in ARAM shifts your lobbies noticeably by the next session.
Can you actually check it?
Not from public data, and we would rather say so than invent a number. Riot's public API exposes rank, division and LP for the ranked queues, which is what makes a ranked MMR estimate possible at all: there is a visible anchor to triangulate from. ARAM exposes nothing — no tier, no LP, no ladder position — so there is no public value to anchor an estimate to. Any site displaying a precise ARAM MMR is either inferring it from its own crowd-sourced database or presenting a guess as a measurement. Our methodology page sets out what each tool can and cannot know.
What you can measure
Your ARAM volume, precisely. The playtime calculator counts your ARAM games separately from every other queue and prices them at the mode's own average duration, so you can see exactly how much of your League career has happened on a bridge. For the ranked side of the picture, start with what MMR is and how it sets your LP.
Frequently asked questions
Can I check my ARAM MMR?
Not from Riot's public API. ARAM exposes no rank, division or LP, so there is no public anchor to estimate from — unlike the ranked queues. Any exact ARAM MMR you see elsewhere is inferred from a private database or simply guessed.
Does losing in ARAM affect my ranked MMR?
No. Every queue keeps its own independent rating. ARAM results never touch your solo/duo or flex MMR, and ranked results never touch your ARAM matchmaking.
Why are my ARAM games harder than my ranked games?
Because your ARAM MMR has usually climbed higher than your ranked one. ARAM accumulates games quietly over years and gets no seasonal reset pulling it back toward the average, so it ends up ahead of the rank on your profile.