CS2 performance stats: ADR, KAST and round context

Performance statistics are useful when their definitions stay beside their values. Start with what was counted, which rounds were included and what the number leaves out.

What is ADR in CS2?

ADR means average damage per round. In JumpThrow, it is health-capped damage dealt to opponents divided by the rounds that player played in the selected match or side. It includes enemy damage from weapons and utility, excludes teammate damage, and counts post-round-end hits toward the round that just ended.

ADR = enemy health damage ÷ played rounds. The result is health points (HP) per round. The health cap prevents overkill from inflating the total: a hit that removes an opponent’s remaining 30 HP contributes 30, even if its raw damage is higher. Armor damage is not added to this health total.

CT and T values use only the player’s rounds on that side. A substitute or late joiner may have fewer recorded rounds than the full match. Without played rounds, the formula has no usable denominator.

What is KAST in CS2?

KAST is the percentage of played rounds in which a player had a kill, a recorded assist, survived or had a traded death. JumpThrow counts each qualifying round once, even when several conditions apply. The denominator is that player’s recorded rounds in the selected match or CT/T side, not automatically every match round.

KAST = qualifying played rounds ÷ played rounds × 100. It is not kills plus assists plus survivals plus trades divided by rounds: those conditions overlap.

JumpThrow’s traded-death rule checks whether a teammate kills the original killer within four seconds in the same round. A service using a different trade window or assist rule can report a different KAST from the same demo.

How do the calculations work?

Illustrative arithmetic only: these five rounds are invented to explain the formulas. They are not a measured match, benchmark or example of a particular skill level.

Compare the columns; scroll the table on smaller screens.

Enemy health damage totals 300 HP, so ADR is 300 ÷ 5 = 60 HP per round. Four of five rounds qualify for KAST, so KAST is 4 ÷ 5 × 100 = 80%. Round 2 counts once despite meeting two conditions; round 4 contributes damage to ADR without qualifying for KAST.

What can a high ADR or KAST tell you?

A higher ADR means more recorded enemy damage per played round under that definition. A higher KAST means more rounds met at least one condition. Neither tells you whether damage arrived before a decisive fight, whether survival helped the objective, or why a player made a decision.

Keep role, opponents, buy conditions, side and sample size in view. Read ratings for model-specific inputs, duels for openings and trade support, and the available round tape for the actual sequence. A small CT sample and a full-match result are different evidence.

For a practical next step, use the worked demo-review example to turn a statistic into a question you can inspect.

Sources and definition scope

HLTV’s Rating 2.0 introduction explains the ADR and KAST terminology. JumpThrow’s health cap, played-round denominators and four-second trade rule above describe its own match processing, reviewed on 6 October 2026. They do not establish identical calculations on another service. Available Performance records require an accessible, processed match; start with the FACEIT tracker.