Metrics
What Is KAST in Valorant?
The round-contribution stat that rewards more than fragging — and how Riptide computes it.
KAST is the percentage of rounds in which you did at least one of four things: got a Kill, an Assist, Survived, or were Traded. One round, one yes-or-no. If any of the four is true, the round counts. KAST is the share of your rounds that count.
It measures contribution, not raw frags. A round where you trade two enemies counts exactly the same as a round where you laid smokes, took no kill, and simply lived. That is the point: KAST credits the quiet, useful rounds that K/D ignores. In this corpus, ~71% is the average KAST — and the number shifts by role, so judge it against players who play your role.
What each letter means
Per round, Riptide checks the four conditions independently. Only one has to be true for the round to count toward your KAST.
| Letter | Counts when | Why it matters |
|---|---|---|
| Kill | You landed a kill that round | Direct fragging impact |
| Assist | You assisted a teammate's kill | Damage and utility that set up a frag |
| Survive | You were alive at round end | You didn't trade your life away cheaply |
| Trade | You died, but a teammate avenged you fast | Your death wasn't a free pick for the enemy |
The four ways a round counts toward KAST.
Because Assist and Survive both count, KAST is far fairer to Controllers and support players than kill-based stats. You can post a strong KAST on a low-frag night by doing your job: holding space, trading well, and staying alive. See how roles shift the baseline for why a duelist and a sentinel read differently here.
The Trade rule, exactly
The T is the subtle one. A death is traded when the enemy who killed you is killed by someone on your team within a fixed window after your death. Riptide uses a 4-second trade window:
TRADE_WINDOW_MS = 4000 // killer must die within 4s of your deathFrom isDeathTraded(): the killer is killed by the victim's team within 4000 ms.
So if you die but a teammate refrags your killer inside 4 seconds, that round still counts for you — your death bought a trade instead of giving the enemy a free advantage. Outside 4 seconds, the refrag no longer rescues the round. This is why good team trading lifts everyone's KAST, not just the player who got the refrag kill.
Read T alongside trade discipline
The same 4s window powers your Deaths traded stat — the share of your deaths a teammate avenged. KAST asks "did this round count?"; deaths-traded asks "how often does my team bail me out?" Two different angles on the same trade events. See the full stat glossary.
How Riptide computes KAST
For each round, Riptide evaluates four booleans — gotKill, gotAssist, survived, and wasTraded — and the round counts if any is true:
kastThisRound = gotKill OR gotAssist OR survived OR wasTradedkastPercent = counted rounds ÷ total rounds × 100.
Riptide also splits KAST by side, tracking attack and defense KAST separately (sides.attack.kastPercent and sides.defense.kastPercent). A wide gap is diagnostic: a low attack KAST usually means you over-extend on entries; a low defense KAST means you trade your life on dry peeks. Open your player page to see your split.
How KAST feeds your Impact rating
KAST is one half of the FRAG axis of Riptide's Impact rating. Impact collapses to three decorrelated axes, and the fragging axis is the average of your standardized KAST and standardized ADR:
FRAG = mean(z KAST, z ADR) Impact weights: frag 0.6 / trade 0.22 / clutch 0.18FRAG carries 0.6 of the rating; TRADE (deaths-traded) 0.22; CLUTCH (CLOE) 0.18.
Pairing KAST with ADR is deliberate: KAST says how often you contributed, ADR says how much. Together they form the fragging signal, and Impact is competitive-only — casual modes never move it. Read the full Impact breakdown to see how the three axes combine into a 0–100 percentile, banded Poor <30, Subpar <45, Average ≤62, Good ≤80, Great >80.
How to read your KAST
- ~71% is average — Riptide grades against its high-Immortal corpus, and KAST runs lower at lower ranks. Below ~66% means too many dead, untraded rounds; ~76%+ is excellent round-to-round presence.
- Compare to your role. Duelists trade fragging for entries; sentinels and controllers lean on Survive and Assist. KAST is role-dependent — never compare across roles blindly.
- Watch the side split. A lopsided attack/defense KAST tells you which half of the round you keep losing your life in.
- High KAST, low ADR? You're present but not impactful — you survive and assist but rarely close rounds. Push for damage.
Go deeper with Riptide Pro
Every player gets KAST and the side split. Riptide Pro layers on the transformative analytics — Impact trends over time, archetype fit, and the consistency and clutch breakdowns that explain why your KAST moves. See pricing or browse the playstyle archetypes.