AK vs A5s: Odds & Interactive Calculator
| Hand | Win | Tie | Equity |
|---|---|---|---|
| AK (Ace-King) | 66.6% | 4.5% | 68.8% |
| A5s (Ace-Five Suited) | 29.0% | 4.5% | 31.2% |
Suited vs offsuit: AK
| Matchup | Win | Tie | Equity |
|---|---|---|---|
| AKs | 67.7% | 4.3% | 69.8% |
| AKo | 66.2% | 4.5% | 68.5% |
How AK vs A5s unfolds by street
Ace-King (AK) is still ahead on 81% of flops against A5s, and the lead survives to the turn on 77%. A5s takes the lead on the other 19% of flops. These figures come from full board enumeration, not a simulation.
| Street | AK still ahead | A5s flipped the lead |
|---|---|---|
| Flop | 81% | 19% |
| Turn | 77% | 23% |
Share a card and you get a kicker problem — that's AK vs A5s: AK wins 66.6%, A5s wins 29.0%, and 4.5% of boards chop. Live to only its odd card (plus a thin straight or flush), A5s wins about 1 in 3; the 4.5% tie figure is the tell that these hands are tangled on the same rank.
Here's the intuition behind 68.8% to 31.2%: AK wins roughly 2 of every 3 times the chips go in, but the underdog cashing 31.2% of the time is exactly why you can't slow-play and let it draw for free.
Domination is where preflop hand-reading pays off. With AK you want stacks in; with A5s you want out, because three outs and a prayer is not a stack-off — recognizing that you're crushed against a strong range is worth more than any postflop move.
Where to take AK vs A5s next
Getting it in near the money bubble or at a final table? Chip equity isn't prize equity — check the spot in the ICM calculator before you call off your stack.
Played a hand like this yourself? Import it into the poker hand analyzer for a street-by-street review of every decision, not just the all-in.
For the bigger picture, the poker tournament strategy guide covers when to shove and when to fold as stacks shrink, and what GTO poker is explains why strong players think in ranges rather than single hands.
New to the game? The poker hand rankings chart shows which hand wins at showdown, how to play poker: a beginner's guide walks through the rules and betting rounds, and the poker strategy guide shows where preflop equity fits into a winning game plan.
AK vs A5s FAQ
Who wins AK vs A5s preflop?
AK (Ace-King) is the favorite, winning 66.6% of all runouts, while A5s (Ace-Five Suited) wins 29.0%. The remaining 4.5% are split pots. Counting splits as half, AK's preflop equity is 68.8%.
Does the AK vs A5s probability change all-in preflop?
No. Once both hands are all-in preflop the odds are set by the cards alone — position, stack size and who bet first change nothing. The only thing that moves the number is suits: AK's equity runs from 68.1% to 69.8% depending on suitedness and which suits the two hands share, which is why different sites quote slightly different figures. It does change once board cards are dealt (AK leads on 81% of flops) and in multiway pots, where every extra caller takes equity from both hands.
Why is A5s so bad against AK?
Because they share a card, A5s is drawing to roughly three outs and chops 4.5% of the time — it wins only about 1 in 3. That's the danger of a dominated hand: too strong to fold, too far behind to outdraw, which is how kicker problems quietly cost full stacks.
Does AK hold up against A5s after the flop?
AK is still ahead on 81% of flops and stays ahead through the turn on 77% of boards; A5s takes the lead on the other 19% of flops. These are exact figures from full board enumeration.
Run any matchup in the free equity calculator · AK VS A2S · AK VS A3S · AK VS A4S · AK VS A6S · AK VS A7S · AK VS A8S
AK against a range
All-in against one known hand is the textbook case; at the table AK is usually up against a range. Exact equities, computed over every combo with card removal applied:
- AK vs calling station — 64.5% against 670 combos (50.5% of hands)
- AK vs BTN open — 64.0% against 586 combos (44.2% of hands)
- AK vs SB open — 64.0% against 534 combos (40.3% of hands)
- AK vs CO open — 61.7% against 366 combos (27.6% of hands)