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Karthus Counters
Best and worst matchups for Karthus in League of Legends — measured win rates from recent high-elo ranked games.
Win rates are live aggregates of ranked League of Legends matches from the last 30 days, recomputed daily. Per-matchup sample sizes are shown alongside every number.
Karthus beats
 Malzahar | 58.36% | 682 |
 Ryze | 57.28% | 536 |
 Vayne | 57.00% | 607 |
 Mel | 56.73% | 379 |
 Vi | 56.53% | 628 |
 Nautilus | 56.14% | 1,961 |
 Nocturne | 56.12% | 556 |
 Smolder | 56.11% | 581 |
 Trundle | 55.91% | 313 |
 Kai'Sa | 55.75% | 2,897 |
 Corki | 55.42% | 637 |
 Teemo | 55.41% | 702 |
Karthus struggles against
 Ivern | 44.47% | 380 |
 Illaoi | 45.51% | 345 |
 Kog'Maw | 46.09% | 640 |
 Aurora | 46.42% | 825 |
 Nidalee | 46.52% | 890 |
 Heimerdinger | 46.70% | 364 |
 Nasus | 46.81% | 816 |
 Skarner | 46.88% | 384 |
 Sejuani | 47.03% | 370 |
 Soraka | 47.30% | 1,222 |
 Sona | 47.39% | 612 |
 Cassiopeia | 47.44% | 527 |
Frequently Asked Questions
4 Q&A- Who counters Karthus in League of Legends?
- Karthus's hardest measured counters right now are Ivern (44.47% win rate for Karthus), Illaoi (45.51%) and Kog'Maw (46.09%), from recent high-elo ranked matches.
- How do you counter Karthus in LoL draft?
- Pick champions Karthus loses to most often in high-elo solo queue: Ivern (Karthus wins only 44.47%), Illaoi (45.51%), or Kog'Maw (46.09%), and test the full 5v5 draft in the LoL Draft Predictor.
- Who does Karthus counter in League of Legends?
- Karthus wins most against Malzahar (58.36%), Ryze (57.28%) and Vayne (57.00%).
- How are Karthus's matchup win rates calculated?
- All Karthus counter numbers on batru.gg are observed head-to-head win rates from recent high-elo ranked matches, requiring at least 25 games before a matchup is featured.
Data updated Oct 25, 2026.