Karthusvs Irelia
Karthus vs Irelia is a decisive matchup in LoL patch 26.10. Irelia wins with a 80.0% win rate (+60.0%) over Karthus based on 5 games. Irelia 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 Irelia 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.
Irelia(20.0%)Who Wins the Karthus vs Irelia Matchup?
Karthus vs Irelia Matchup Summary
The Karthus vs Irelia matchup is a decisive matchup in League of Legends ranked play. Based on 5 recent matches analyzed, Irelia wins with a 80.0% win rate compared to Karthus's 20.0%, giving Irelia a 60.0 percentage point advantage. Irelia dominates at every stage — from early laning through late game team fights. This consistent advantage makes it difficult for Karthus players to find favorable windows, so team-dependent strategies and avoiding solo confrontations are essential. The most significant statistical gap is in sustain, where Irelia leads by 1,219 HP/min — a difference that heavily influences the outcome of trades and skirmishes. Irelia has a strong advantage in this matchup. Karthus players should play defensively, prioritize safe farming under tower, and look for opportunities created by jungle pressure or Irelia overextending. Avoid prolonged trades and wait for team fights where positioning and coordination matter more. Understanding these matchup dynamics is essential for champion select decisions and in-game strategy when facing this lane opponent.
Karthus vs Irelia Laning Phase Breakdown
Irelia is favored during the laning phase against Karthus, winning 3 out of 5 key stat categories. Irelia holds advantages in farming, gold income and sustain, making them the stronger laner in this matchup.
Best Karthus Build Against Irelia
Spellslinger's Shoes is the optimal boots choice against Irelia, providing the mobility and stats Karthus needs most in this matchup. The top-performing core items for Karthus against Irelia are Shadowflame, Zhonya's Hourglass and Blackfire Torch. This combination gives Karthus an effective balance of damage, survivability, and utility for the matchup. Adjustments may be needed based on team compositions and game state, but this build provides the strongest foundation for the Karthus vs Irelia matchup.
Early Game vs Late Game
Karthus0.0%Irelia100.0%Karthus33.3%Irelia66.7%Irelia dominates the early game (first 15 minutes) with a commanding 100.0% win rate — a 100.0 percentage point lead over Karthus. This lopsided early game means Irelia can dictate the pace of the lane from level 1, controlling trades, wave state, and river priority.
Irelia is far superior in the late game (25+ minutes), boasting a 66.7% win rate — 33.3 points above Karthus. Extended games heavily favor Irelia, whose kit and scaling make them a dominant force in team fights and objective control.
Irelia holds the advantage at every stage of the game, making this a consistently favorable matchup from lane through late game team fights. Karthus players should look for outplays, team-dependent strategies, and picks rather than relying on scaling to win this matchup.
Best Karthus Runes Against Irelia
Precision
Sorcery
The Precision and Sorcery rune setup gives Karthus the best tools to compete against Irelia in this difficult matchup, compensating for the statistical disadvantages with optimal rune synergies.
Karthus matchup data for League of Legends patch 26.10. 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.
Opponent | Win Rate | Matches | CS/min | DMG/min | Gold/game | Early WR | Late WR |
|---|---|---|---|---|---|---|---|
| 53.70% | 54 | 6.7 | 1,334 | 14,541 | 50.0% | 55.9% | |
| 51.16% | 43 | 1.2 | 1,048 | 11,958 | 50.0% | 52.2% | |
| 58.14% | 43 | 6.7 | 1,208 | 12,831 | 73.7% | 45.8% | |
| 40.48% | 42 | 6.5 | 1,296 | 13,127 | 41.2% | 40.0% | |
| 57.50% | 40 | 1.5 | 1,233 | 15,078 | 57.1% | 57.7% | |
| 38.46% | 39 | 1.3 | 1,197 | 12,448 | 26.3% | 50.0% | |
| 60.53% | 38 | 6.5 | 1,267 | 14,330 | 71.4% | 54.2% | |
| 50.00% | 36 | 1.4 | 1,149 | 13,024 | 52.9% | 47.4% | |
| 55.56% | 36 | 6.7 | 1,460 | 14,986 | 58.3% | 54.2% | |
| 45.71% | 35 | 1.5 | 1,097 | 13,801 | 60.0% | 40.0% | |
| 34.29% | 35 | 1.4 | 1,055 | 12,462 | 33.3% | 35.0% | |
| 58.82% | 34 | 1.3 | 1,143 | 14,808 | 61.5% | 57.1% | |
| 40.63% | 32 | 1.2 | 947 | 12,752 | 42.9% | 38.9% | |
| 46.88% | 32 | 6.6 | 1,374 | 14,562 | 45.5% | 47.6% | |
| 41.38% | 29 | 1.9 | 1,257 | 15,098 | 14.3% | 50.0% | |
| 53.57% | 28 | 6.5 | 1,370 | 14,144 | 69.2% | 40.0% | |
| 50.00% | 24 | 1.5 | 1,259 | 15,577 | 83.3% | 38.9% | |
| 75.00% | 24 | 1.2 | 1,011 | 12,786 | 77.8% | 73.3% | |
| 34.78% | 23 | 1.5 | 1,116 | 12,544 | 30.0% | 38.5% | |
| 47.83% | 23 | 2.4 | 1,093 | 11,868 | 56.3% | 28.6% | |
| 40.91% | 22 | 1.6 | 1,185 | 12,564 | 30.0% | 50.0% | |
| 42.86% | 21 | 1.3 | 1,179 | 14,310 | 28.6% | 50.0% | |
| 71.43% | 21 | 6.6 | 1,478 | 16,886 | 75.0% | 69.2% | |
| 60.00% | 20 | 1.1 | 1,186 | 13,656 | 37.5% | 75.0% | |
| 45.00% | 20 | 1.6 | 1,083 | 11,552 | 50.0% | 40.0% | |
| 35.00% | 20 | 1.3 | 1,045 | 11,401 | 25.0% | 50.0% | |
| 50.00% | 20 | 4.1 | 1,211 | 12,621 | 55.6% | 45.5% | |
| 47.37% | 19 | 6.5 | 1,244 | 15,447 | 60.0% | 42.9% | |
| 42.11% | 19 | 1.4 | 1,346 | 14,538 | 25.0% | 54.5% | |
| 42.11% | 19 | 1.5 | 1,242 | 13,668 | 28.6% | 50.0% | |
| 52.63% | 19 | 2.2 | 1,181 | 14,281 | 71.4% | 41.7% | |
| 50.00% | 18 | 1.5 | 1,087 | 12,343 | 50.0% | 50.0% | |
| 50.00% | 18 | 1.3 | 1,230 | 14,057 | 50.0% | 50.0% | |
| 77.78% | 18 | 1.3 | 1,087 | 12,114 | 100.0% | 42.9% | |
| 55.56% | 18 | 4.2 | 1,240 | 14,435 | 60.0% | 53.9% | |
| 43.75% | 16 | 6.3 | 1,121 | 14,285 | 40.0% | 45.5% | |
| 53.33% | 15 | 4.1 | 1,368 | 16,832 | 50.0% | 54.5% | |
| 80.00% | 15 | 2.0 | 994 | 11,186 | 90.0% | 60.0% | |
| 26.67% | 15 | 1.3 | 1,179 | 12,851 | 20.0% | 30.0% | |
| 60.00% | 15 | 1.5 | 1,108 | 12,626 | 83.3% | 44.4% | |
| 35.71% | 14 | 6.3 | 1,318 | 13,132 | 33.3% | 40.0% | |
| 57.14% | 14 | 2.3 | 1,157 | 15,247 | 0.0% | 66.7% | |
| 38.46% | 13 | 2.0 | 1,238 | 14,094 | 33.3% | 40.0% | |
| 76.92% | 13 | 2.1 | 1,285 | 13,530 | 85.7% | 66.7% | |
| 66.67% | 12 | 1.8 | 1,187 | 13,324 | 80.0% | 57.1% | |
| 58.33% | 12 | 1.3 | 1,396 | 13,145 | 60.0% | 57.1% | |
| 50.00% | 12 | 7.0 | 1,302 | 13,897 | 66.7% | 33.3% | |
| 58.33% | 12 | 6.6 | 1,388 | 13,327 | 50.0% | 62.5% | |
| 41.67% | 12 | 6.4 | 1,235 | 13,142 | 20.0% | 57.1% | |
| 45.45% | 11 | 5.8 | 954 | 13,053 | 33.3% | 50.0% | |
| 81.82% | 11 | 1.7 | 1,194 | 14,612 | 75.0% | 85.7% | |
| 54.55% | 11 | 1.3 | 1,279 | 14,661 | 60.0% | 50.0% | |
| 45.45% | 11 | 7.1 | 1,080 | 11,401 | 40.0% | 50.0% | |
| 36.36% | 11 | 1.8 | 1,020 | 13,234 | 14.3% | 75.0% | |
| 70.00% | 10 | 6.4 | 1,036 | 11,954 | 100.0% | 57.1% | |
| 50.00% | 10 | 2.4 | 1,343 | 13,760 | 25.0% | 66.7% | |
| 30.00% | 10 | 1.2 | 1,127 | 12,918 | 20.0% | 40.0% | |
| 70.00% | 10 | 5.7 | 1,177 | 12,265 | 66.7% | 71.4% | |
| 22.22% | 9 | 2.1 | 1,346 | 14,600 | 0.0% | 50.0% | |
| 22.22% | 9 | 2.2 | 1,130 | 15,204 | 100.0% | 12.5% | |
| 66.67% | 9 | 6.9 | 1,100 | 14,977 | 66.7% | 66.7% | |
| 33.33% | 9 | 6.8 | 1,133 | 11,312 | 25.0% | 40.0% | |
| 55.56% | 9 | 7.2 | 1,134 | 11,626 | 80.0% | 25.0% | |
| 22.22% | 9 | 6.7 | 1,294 | 15,753 | 0.0% | 28.6% | |
| 37.50% | 8 | 4.6 | 1,301 | 11,126 | 25.0% | 50.0% | |
| 50.00% | 8 | 5.0 | 1,422 | 13,059 | 33.3% | 60.0% | |
| 12.50% | 8 | 5.9 | 1,335 | 15,242 | 0.0% | 12.5% | |
| 62.50% | 8 | 5.1 | 1,260 | 13,707 | 33.3% | 80.0% | |
| 50.00% | 8 | 6.6 | 1,181 | 14,003 | 0.0% | 57.1% | |
| 62.50% | 8 | 5.9 | 1,181 | 13,999 | 100.0% | 57.1% | |
| 75.00% | 8 | 4.1 | 1,111 | 10,853 | 75.0% | 75.0% | |
| 37.50% | 8 | 5.3 | 1,116 | 10,640 | 20.0% | 66.7% | |
| 25.00% | 8 | 6.6 | 1,559 | 12,581 | 20.0% | 33.3% | |
| 50.00% | 8 | 2.2 | 1,108 | 12,447 | 33.3% | 60.0% | |
| 62.50% | 8 | 2.0 | 1,142 | 12,801 | 60.0% | 66.7% | |
| 42.86% | 7 | 4.0 | 1,141 | 13,407 | 33.3% | 50.0% | |
| 42.86% | 7 | 6.5 | 1,692 | 12,879 | 0.0% | 50.0% | |
| 28.57% | 7 | 6.3 | 1,353 | 14,445 | 0.0% | 40.0% | |
| 57.14% | 7 | 2.1 | 1,276 | 16,607 | 50.0% | 60.0% | |
| 71.43% | 7 | 6.9 | 1,631 | 17,197 | 33.3% | 100.0% | |
| 33.33% | 6 | 6.4 | 1,325 | 13,927 | 33.3% | 33.3% | |
| 33.33% | 6 | 6.9 | 947 | 12,884 | 0.0% | 40.0% | |
| 50.00% | 6 | 1.9 | 1,177 | 12,942 | 50.0% | 50.0% | |
| 66.67% | 6 | 2.3 | 1,109 | 12,999 | 50.0% | 75.0% | |
| 33.33% | 6 | 6.9 | 1,156 | 11,251 | 20.0% | 100.0% | |
| 83.33% | 6 | 2.3 | 1,076 | 13,887 | 66.7% | 100.0% | |
| 80.00% | 5 | 3.4 | 1,156 | 14,206 | 50.0% | 100.0% | |
| 60.00% | 5 | 3.4 | 1,498 | 14,271 | 50.0% | 66.7% | |
| 40.00% | 5 | 2.5 | 937 | 10,527 | 33.3% | 50.0% | |
| 40.00% | 5 | 3.9 | 1,517 | 15,501 | 0.0% | 50.0% | |
| 40.00% | 5 | 1.1 | 1,094 | 13,003 | 50.0% | 33.3% | |
| 60.00% | 5 | 2.7 | 1,405 | 16,087 | 0.0% | 100.0% | |
| 20.00% | 5 | 6.3 | 1,452 | 11,571 | 0.0% | 33.3% | |
| 60.00% | 5 | 6.9 | 1,144 | 10,504 | 66.7% | 50.0% | |
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Karthus vs Irelia - Frequently Asked Questions
How does Karthus do against Irelia in League of Legends?
Irelia wins the Karthus vs Irelia matchup with a 80.0% win rate compared to Karthus's 20.0%, a 60.0 percentage point difference. This data is based on 5 recent ranked games in patch 26.10.
How does Karthus do against Irelia in the early game?
In the early game, Irelia has the advantage against Karthus with a 100.0% win rate versus 0.0%. Irelia players should look to press their lane advantage through aggressive trades and wave control during the first 15 minutes.
How does Karthus do against Irelia in the late game?
In the late game, Irelia takes over the Karthus vs Irelia matchup with a 66.7% win rate compared to 33.3%. Irelia scales better into team fights and objective contests after 25 minutes.
Who wins the Karthus vs Irelia matchup?
Irelia wins the matchup against Karthus with a 80.0% win rate in League of Legends patch 26.10. The 60.0 percentage point advantage means Irelia is significantly favored in this lane matchup based on 5 games analyzed.
What is the best Karthus build against Irelia?
The best Karthus build against Irelia includes Shadowflame, Zhonya's Hourglass, Blackfire Torch with Spellslinger's Shoes. Check the matchup breakdown above for the full item path and build order.
What are the best Karthus runes against Irelia?
The best Karthus runes against Irelia use the Precision primary tree with Sorcery secondary. This rune setup achieves a 100.0% win rate in the Karthus vs Irelia matchup. See the full rune breakdown in the matchup comparison above.
Does Karthus counter Irelia?
No, Karthus struggles against Irelia with only a 20.0% win rate. Irelia has the advantage in this matchup. Karthus players should focus on safe farming and avoiding extended trades to minimize Irelia's lead.
How do I play Karthus against Irelia?
When playing Karthus against Irelia, play cautiously and avoid Irelia's power spikes. Look for jungle assistance and team-dependent plays since Irelia has the statistical advantage at most stages. Use the matchup-specific build and runes above to optimize your chances.