AK vs KK: Who Wins? Exact Odds
KK is a clear favorite: ace-king wins only about 31.1% of the time against pocket kings — 30.1% as AKo, 34.1% as AKs. This is not the AK-vs-QQ race: the king in AK's hand is dominated, so only the ace is truly live.
Win, tie, loss
Share of all possible runouts across every suit combination (48 combo pairs). Equity adds half the ties to each side: AK 31.1%, KK 68.9%.
Equity by suit configuration
AKo vs KK30.1% / 69.9%
| Suit configuration | Combos | AKo equity | KK equity |
|---|---|---|---|
A♠K♥ vs K♠K♦ K♠ shares the ace's suit | 24 | 30.18% | 69.82% |
A♠K♥ vs K♦K♣ no shared suits — every backdoor flush is live | 12 | 29.99% | 70.01% |
| All AKo vs KK combos | 36 | 30.12% | 69.88% |
AKs vs KK34.1% / 65.9%
| Suit configuration | Combos | AKs equity | KK equity |
|---|---|---|---|
A♠K♠ vs K♥K♦ no AK flush-suit card in the other hand — the flush draw is fully live | 12 | 34.11% | 65.89% |
| All AKs vs KK combos | 12 | 34.11% | 65.89% |
Each row is a suit-isomorphism class: relabeling the four suits doesn't change equity, so every combo in a row has the identical, exactly-enumerated number. “Combos” counts the hand-vs-hand combinations the row represents.
Why domination changes everything
Against QQ, ace-king has six clean outs — three aces and three kings. Against KK the kings are gone: two are in villain's hand and the last one makes villain a set. AK is left with three aces, backdoor straights and flushes, which is why its equity collapses from 43.2% (vs QQ) to 30.1% here. When two big hands share a rank, always ask whose cards are live — that one question separates races from beatings.
- AK does 13.1 points worse against KK than against QQ (30.1% vs 43.2%, offsuit). Card removal is the whole story — villain's kings turn half of AK's outs into a disaster.
- Catching a king actively hurts: the one king left in the deck gives KK a set. AK's real outs are the three aces — at least one reaches the board 28.6% of the time — plus straights and flushes.
- Being suited is worth more here than in the races: +4.0 points (34.1% vs 30.1%), against +2.8 in AK vs QQ — flushes are a bigger share of AK's fewer wins.
How it was calculated
Exact enumeration, not simulation: for every suit configuration above, all 1,712,304 possible five-card boards were dealt and both hands scored with app/lib/poker-eval.js — the same 7-card evaluator behind /tools/odds-calculator. Ties split the pot, so equity is win% plus half the tie%. Computed 2026-07-27.
Don't take our word for it — run AK vs KK yourself in the odds calculator and watch the Monte Carlo estimate converge on these numbers.
Frequently asked questions
Who wins AK vs KK all-in preflop?+
KK, clearly: 68.9% to 31.1% across all suit combinations (ties 0.8%). AKs does best at 34.1%; AKo gets just 30.1%.
Is AK vs KK a coin flip?+
No. A flip is 45–55%; AK is at 30.1%–34.1% here. The confusion comes from AK vs QQ (43.2% offsuit), which genuinely is a race — against KK, AK's king is dominated.
What does AK need to beat KK?+
An ace (on board 28.6% of the time), a straight, or a flush. A king is no help at all — it gives KK a set. That is why AK vs KK is domination, not a race.