Karthus - League of Legends Champion
Win Rate
49.3%
Pick Rate
1.3%

Karthusvs Kai'Sa

DMage
Patch26.7
Matches949,984
LaneAll Lanes
TierAll Tiers
Last UpdatedApr 20, 2026
MethodologyData Methodology

Karthus vs Kai'Sa is a decisive matchup in LoL patch 26.7. Karthus wins with a 70.0% win rate (+40.0%) over Kai'Sa based on 10 games. Karthus holds the advantage in both the early and late game. Below you'll find the best Karthus build, runes, laning stats, and strategies for the Karthus vs Kai'Sa matchup.

Karthus Matchup Breakdown

Use the dropdown to select an opponent and see a detailed breakdown of how Karthus performs against them. You'll get head-to-head win rates, laning stats, the best build and runes for the matchup, and early vs late game analysis — all based on real ranked data.

Compare against an opponent
Kai'Sa - 70.0% win rateKai'Sa(70.0%)
Karthus - 70.0% win rate in this matchup
Karthus
70.0% WR
VS
Kai'Sa vs Karthus matchup - 30.0% win rate
Kai'Sa
30.0% WR

Who Wins the Karthus vs Kai'Sa Matchup?

Karthus wins the Karthus vs Kai'Sa matchup
Winner
Karthus
Matches: 10
70.0%
Win Rate
30.0%
7.1
CS / min
7.0
1,333
DMG / min
946
14,530
Gold / game
14,554
69
Heal / min
161
390
DMG Mitigated / min
489
0.6
CC / min
0.0
75.0%
Early Game WR
25.0%
66.7%
Late Game WR
33.3%

Karthus vs Kai'Sa Matchup Summary

The Karthus vs Kai'Sa matchup is a decisive matchup in League of Legends ranked play. Based on 10 recent matches analyzed, Karthus wins with a 70.0% win rate compared to Kai'Sa's 30.0%, giving Karthus a 40.0 percentage point advantage. Karthus dominates at every stage — from early laning through late game team fights. This consistent advantage makes it difficult for Kai'Sa players to find favorable windows, so team-dependent strategies and avoiding solo confrontations are essential. The most significant statistical gap is in crowd control, where Karthus leads by 0.6s CC/min — a difference that heavily influences the outcome of trades and skirmishes. Karthus players can confidently pick into Kai'Sa and play aggressively from level 1. Look to establish lane dominance early through favorable trades and zone Kai'Sa away from CS whenever possible. Understanding these matchup dynamics is essential for champion select decisions and in-game strategy when facing this lane opponent.

Karthus vs Kai'Sa Laning Phase Breakdown

Karthus wins the laning phase against Kai'Sa in League of Legends

Karthus is favored during the laning phase against Kai'Sa, winning 3 out of 5 key stat categories. Karthus holds advantages in farming, damage and crowd control, making them the stronger laner in this matchup.

Farming
7.1Karthus
7.0Kai'Sa
Karthus and Kai'Sa farm at nearly identical rates in this matchup, with only a 0.1 CS/min difference. Neither champion holds a meaningful farming advantage, so lane dominance will come from trading and jungle interaction rather than CS leads.
Damage
1,333Karthus
946Kai'Sa
Karthus heavily out-damages Kai'Sa by 387 DMG/min, dominating both short trades and all-in fights. Kai'Sa should avoid extended combat and instead focus on burst trade patterns — short engages followed by immediate disengagement — to avoid letting Karthus's sustained damage advantage take over.
Economy
14,530Karthus
14,554Kai'Sa
Karthus and Kai'Sa generate nearly equal gold per game, with just a 24 gold difference. Neither champion has a clear economic advantage, so gold leads will depend on individual play quality, kill participation, and objective contributions.
Utility
0.6Karthus
0.0Kai'Sa
Karthus provides 0.6 seconds more crowd control per minute than Kai'Sa, offering better gank setup potential and slightly more team fight utility. This CC advantage helps Karthus coordinate with their jungler and control the pace of skirmishes.
Sustain
458Karthus
650Kai'Sa
Kai'Sa vastly out-sustains Karthus, healing and mitigating 192 more damage per minute. This massive durability gap means Kai'Sa can absorb significant punishment and remain in lane while Karthus is forced to recall. Building grievous wounds early is essential for Karthus, and focusing on burst trade patterns rather than sustained fights is critical.

Early Game vs Late Game

Early Game
Karthus
75.0%
+50.0% advantage
Karthus early game win rateKarthus75.0%
Kai'Sa early game win rateKai'Sa25.0%
Late Game
Karthus
66.7%
+33.3% advantage
Karthus late game win rateKarthus66.7%
Kai'Sa late game win rateKai'Sa33.3%

Karthus dominates the early game (first 15 minutes) with a commanding 75.0% win rate — a 50.0 percentage point lead over Kai'Sa. This lopsided early game means Karthus can dictate the pace of the lane from level 1, controlling trades, wave state, and river priority.

Karthus is far superior in the late game (25+ minutes), boasting a 66.7% win rate — 33.3 points above Kai'Sa. Extended games heavily favor Karthus, whose kit and scaling make them a dominant force in team fights and objective control.

Karthus holds the advantage at every stage of the game, making this a consistently favorable matchup from lane through late game team fights. Kai'Sa players should look for outplays, team-dependent strategies, and picks rather than relying on scaling to win this matchup.

Best Karthus Runes Against Kai'Sa

Domination rune tree - Karthus primary runes vs Kai'SaDomination
Dark Harvest - best Karthus rune vs Kai'SaCheap Shot - best Karthus rune vs Kai'SaGrisly Mementos - best Karthus rune vs Kai'SaUltimate Hunter - best Karthus rune vs Kai'Sa
Sorcery rune tree - Karthus secondary runes vs Kai'SaSorcery
Axiom Arcanist - best Karthus rune vs Kai'SaGathering Storm - best Karthus rune vs Kai'Sa
100.0% WR

Running Domination primary with Sorcery secondary allows Karthus to press their advantage against Kai'Sa, amplifying the strengths that make this a favorable matchup.


Karthus matchup data for League of Legends patch 26.7. The table below shows Karthus's win rate, gold difference, and performance stats against every champion in the current meta. Click any champion name to see a detailed head-to-head breakdown including the best Karthus build, runes, laning stats, and early vs late game analysis for that specific matchup.

Karthus matchup win rates and stats in League of Legends patch 26.7
Opponent
Win Rate
Matches
CS/min
DMG/min
Gold/game
Early WR
Late WR
48.78%411.51,24613,63464.7%37.5%
45.00%401.71,19914,67650.0%41.7%
37.84%371.81,20313,45342.9%34.8%
59.46%376.81,20414,13361.1%57.9%
58.33%361.41,18514,86346.1%65.2%
42.86%351.61,14713,92340.0%45.0%
44.12%341.41,12214,48658.3%36.4%
65.63%326.31,26613,64771.4%61.1%
50.00%281.61,25415,99971.4%42.9%
44.44%276.11,21913,94641.7%46.7%
59.26%276.01,24814,69160.0%58.8%
60.00%251.51,20814,13545.5%71.4%
63.64%222.01,41215,52085.7%53.3%
63.64%226.01,33115,66162.5%64.3%
57.89%191.21,11113,72737.5%72.7%
36.84%196.51,28014,54516.7%46.1%
42.11%191.51,29515,86340.0%42.9%
57.89%191.41,15014,33071.4%50.0%
47.06%176.41,29415,52850.0%46.1%
76.47%171.21,06613,39466.7%87.5%
47.06%171.81,19814,51350.0%46.1%
75.00%161.41,29814,71466.7%80.0%
56.25%161.51,14013,02250.0%62.5%
26.67%151.31,03412,14627.3%25.0%
33.33%152.11,14213,21320.0%40.0%
35.71%141.11,12013,85225.0%50.0%
38.46%131.21,08313,38916.7%57.1%
38.46%131.41,18614,42740.0%37.5%
23.08%132.21,01010,85522.2%25.0%
46.15%136.01,24613,80450.0%44.4%
53.85%137.11,16413,19242.9%66.7%
50.00%123.71,31914,92180.0%28.6%
50.00%121.21,22814,55325.0%62.5%
25.00%126.51,36414,04133.3%16.7%
83.33%121.41,23815,11766.7%88.9%
25.00%121.61,12615,19325.0%25.0%
66.67%127.31,53918,810100.0%60.0%
25.00%121.21,07613,8870.0%60.0%
50.00%121.31,03811,95450.0%50.0%
63.64%116.81,40515,26060.0%66.7%
63.64%112.91,09213,99266.7%62.5%
27.27%111.31,12512,25020.0%33.3%
18.18%111.51,18312,73025.0%14.3%
45.45%116.71,23014,91440.0%50.0%
70.00%105.91,26912,68760.0%80.0%
60.00%107.01,16813,68960.0%60.0%
60.00%101.41,38813,38660.0%60.0%
70.00%107.11,33314,53075.0%66.7%
33.33%97.31,21213,57820.0%50.0%
44.44%93.899013,717100.0%28.6%
22.22%96.81,08812,89120.0%25.0%
66.67%91.61,56915,98675.0%60.0%
66.67%91.81,22714,33780.0%50.0%
33.33%94.81,07213,64425.0%40.0%
50.00%86.71,22114,59460.0%33.3%
37.50%81.81,33816,668100.0%28.6%
42.86%72.11,10612,56733.3%50.0%
42.86%72.21,17211,38060.0%0.0%
42.86%72.01,37413,47750.0%33.3%
42.86%77.21,12512,97033.3%50.0%
71.43%75.71,05413,5520.0%100.0%
71.43%71.21,49615,8850.0%83.3%
14.29%72.91,23213,7160.0%33.3%
57.14%72.01,19112,95466.7%50.0%
42.86%72.11,19315,03550.0%40.0%
85.71%71.61,34617,646100.0%80.0%
57.14%72.81,23515,411100.0%40.0%
50.00%66.91,27912,34425.0%100.0%
66.67%61.31,38414,20166.7%66.7%
66.67%61.396311,486100.0%50.0%
33.33%65.41,55214,5320.0%33.3%
33.33%62.481311,29650.0%0.0%
66.67%64.01,15114,6630.0%80.0%
16.67%61.41,19215,1100.0%20.0%
50.00%61.61,26817,2400.0%60.0%
60.00%55.91,19113,24966.7%50.0%
40.00%51.61,10312,8790.0%66.7%
40.00%56.81,00311,9160.0%50.0%
60.00%55.11,47719,353100.0%50.0%
20.00%52.81,10312,98150.0%0.0%
60.00%53.17289,38375.0%0.0%
60.00%57.11,03414,8450.0%75.0%
20.00%58.21,15513,53650.0%0.0%
60.00%52.382213,48466.7%50.0%

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Karthus vs Kai'Sa - Frequently Asked Questions

How does Karthus do against Kai'Sa in League of Legends?

Karthus wins the Karthus vs Kai'Sa matchup with a 70.0% win rate compared to Kai'Sa's 30.0%, a 40.0 percentage point difference. This data is based on 10 recent ranked games in patch 26.7.

How does Karthus do against Kai'Sa in the early game?

In the early game, Karthus has the advantage against Kai'Sa with a 75.0% win rate versus 25.0%. Karthus players should look to press their lane advantage through aggressive trades and wave control during the first 15 minutes.

How does Karthus do against Kai'Sa in the late game?

In the late game, Karthus takes over the Karthus vs Kai'Sa matchup with a 66.7% win rate compared to 33.3%. Karthus scales better into team fights and objective contests after 25 minutes.

Who wins the Karthus vs Kai'Sa matchup?

Karthus wins the matchup against Kai'Sa with a 70.0% win rate in League of Legends patch 26.7. The 40.0 percentage point advantage means Karthus is significantly favored in this lane matchup based on 10 games analyzed.

What is the best Karthus build against Kai'Sa?

The best Karthus build against Kai'Sa includes optimized core items. Check the matchup breakdown above for the full item path and build order.

What are the best Karthus runes against Kai'Sa?

The best Karthus runes against Kai'Sa use the Domination primary tree with Sorcery secondary. This rune setup achieves a 100.0% win rate in the Karthus vs Kai'Sa matchup. See the full rune breakdown in the matchup comparison above.

Does Karthus counter Kai'Sa?

Yes, Karthus has a favorable matchup against Kai'Sa with a 70.0% win rate. Karthus strongly counters Kai'Sa in lane based on current patch 26.7 data.

How do I play Karthus against Kai'Sa?

When playing Karthus against Kai'Sa, leverage your statistical advantages by trading aggressively during favorable windows. You have early game priority — look for kills and zone control before first recall. Build the recommended items and runes for this specific matchup for the best results.