KAST Explained: The Stat That Predicts Winning Better Than K/D
K/D tells you how many fights you won. KAST tells you how many rounds you did not waste. For climbing ranked, the second question is the more useful one.
What KAST stands for
KAST is the percentage of rounds in which you did at least one of four things:
- K — Kill. You killed someone.
- A — Assist. You damaged or used an ability on someone a teammate then killed.
- S — Survived. You were alive when the round ended.
- T — Traded. You died, but a teammate killed your killer shortly after.
Hit any one of those and the round counts. Miss all four — you died, took nobody with you, contributed nothing, and your death was not traded — and the round is a zero.
So KAST is really answering a blunt question: what percentage of rounds were you not a liability?
Why it beats K/D for diagnosing your rank
Consider two players in the same 24-round game.
| Player | K/D | KAST | What happened |
|---|---|---|---|
| Player A | 1.4 | 58% | Two enormous 4K rounds, then died first and uncontested in ten others. |
| Player B | 0.95 | 79% | Rarely popped off, almost never died for free, traded or survived constantly. |
Player A has the better highlight reel and the better K/D. Player B won their team far more rounds. Valorant is a round-based game where a 5v4 is close to decisive — so a player who avoids dying uselessly is worth more than one whose kills arrive in clumps.
This is also why KAST correlates with win rate more tightly than K/D does. Kills that come three at a time in one round only win one round.
As a rough rule: under 65% means you are dying for free too often. 70–75% is a solid, sustainable number for most players. Consistently above 80% is a strong signal — you are almost never the round's dead weight.
Reading your own KAST
Low KAST, high ADR
You are dealing damage and dying uncontested. Classic aggressive-lurker profile: you find fights nobody can help you with. The damage is real, the deaths are unforced. Fix the second thing and your rank moves.
Low KAST, low ADR
You are dying early without contributing. Usually a peeking discipline problem. You are taking the first contact of the round on your own terms rather than your team's.
High KAST, low ADR
You are surviving a lot but not doing much. This is the "hiding" profile, and it is the one players are least likely to spot in themselves. Surviving counts for KAST, so a player who plays far back and never contests can post 78% while being close to useless. Check your rounds with zero damage — if that number is high alongside a high KAST, you are padding on the S.
High KAST, high ADR
This is the climbing profile. If you sit here and are not gaining rank, the problem is almost certainly game-level: bad site selection, bad economy, bad post-plant positioning. See the hardstuck diagnostic.
How to raise KAST without changing your aim
This is the genuinely valuable thing about KAST: three of the four letters have nothing to do with shooting.
Play in trade range
The "T" is free if you position for it. If you die within a second or two of a teammate having line of sight to your killer, your death converts into a trade and the round still counts. Practically, that means being close enough that a teammate can punish whoever kills you — roughly one common angle apart, not a whole site apart. Most solo-queue players play too spread out, and every death becomes a clean, untraded loss.
Use utility before you die
A flash that gets someone killed is an assist. A molly that chips someone your teammate finishes is an assist. Players routinely die with a full utility bar — that is a wasted assist and a wasted round. Throw the thing.
Know when the round is over
The "S" is the letter most players throw away. When your team is down 2v5 with 20 seconds left and no spike, the round is lost. Dying in it changes nothing except your KAST, your economy, and your team's information for next round. Backing out and saving your gun is not cowardice — it is the single highest-value habit available to a mid-rank player.
A saved Vandal is 2,900 credits your team does not have to spend next round, which often converts a forced eco into a full buy. Two players saving flips an entire round. The economy guide covers the maths.
Stop taking the last fight of a lost round
Related but distinct: the retake you cannot win, the 1v3 you take because you are annoyed. These are pure KAST donations. Take the 1v3 when you have a real angle and the enemy is split; do not take it because the round timer is running out and you feel like you should do something.
Find the rounds where you contributed nothing
FragLy breaks your recent competitive matches down round by round from real Valorant API data, so you can see exactly where the empty rounds are clustering — and whether it is a positioning problem or a fight-selection problem.
Search your Riot ID →The short version
KAST is the percentage of rounds where you killed, assisted, survived, or were traded. Under 65% you are bleeding free rounds; 70–75% is healthy; 80%+ is strong. The fastest way to raise it is to play in trade range, spend your utility before you die, and accept lost rounds instead of feeding them. None of that requires better aim, which is exactly why it is the first stat most players should work on.
Written by the FragLy team. Benchmarks in this guide are rules of thumb drawn from competitive play, not official Riot figures — use your own tracked matches as the real reference point.