KK vs A3s: Odds & Interactive Calculator
| Hand | Win | Tie | Equity |
|---|---|---|---|
| KK (Pocket Kings) | 67.2% | 0.5% | 67.4% |
| A3s (Ace-Three Suited) | 32.4% | 0.5% | 32.6% |
How KK vs A3s unfolds by street
Pocket Kings (KK) is still ahead on 81% of flops against A3s, and the lead survives to the turn on 75%. A3s takes the lead on the other 19% of flops. These figures come from full board enumeration, not a simulation.
| Street | KK still ahead | A3s flipped the lead |
|---|---|---|
| Flop | 81% | 19% |
| Turn | 75% | 25% |
KK vs A3s is a lopsided race — only one of A3s's cards is an overcard to the pair. KK wins 67.2%, A3s wins 32.4%, and 0.5% of boards chop. With roughly half the outs of a true two-overcard flip, A3s is a clear 2.1-to-1 dog that usually needs to pair its live card (or find a sneaky straight/two-pair runout) to win.
Here's the intuition behind 67.4% to 32.6%: KK wins roughly 2 of every 3 times the chips go in, but the underdog cashing 32.6% of the time is exactly why you can't slow-play and let it draw for free.
How you play KK vs A3s depends on which side you hold. With KK you're not crushing, so keep the pot controllable and take the 67.2% edge to showdown when you can; with A3s, your equity is enough to continue with initiative but thin enough that bloating the pot out of position is a trap.
KK vs A3s FAQ
Who wins KK vs A3s preflop?
KK (Pocket Kings) is the favorite, winning 67.2% of all runouts, while A3s (Ace-Three Suited) wins 32.4%. The remaining 0.5% are split pots. Counting splits as half, KK's preflop equity is 67.4%.
Does the KK vs A3s 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: KK's equity runs from 67.1% to 67.7% depending on how many suits the two hands share, which is why different sites quote slightly different figures. It does change once board cards are dealt (KK leads on 81% of flops) and in multiway pots, where every extra caller takes equity from both hands.
Is KK vs A3s a good spot to get all-in?
For KK, yes — a 67.4% favorite should happily commit, especially with fold equity. For A3s at 32.6%, it depends on the price: enough to continue with initiative, but thin enough that stacking off out of position is usually a leak.
Does KK hold up against A3s after the flop?
KK is still ahead on 81% of flops and stays ahead through the turn on 75% of boards; A3s 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 · KK VS AQ · KK VS AJ · QQ VS AJ · QQ VS KJ · KK VS AT · QQ VS AT
KK against a range
All-in against one known hand is the textbook case; at the table KK is usually up against a range. Exact equities, computed over every combo with card removal applied:
- KK vs calling station — 78.7% against 670 combos (50.5% of hands)
- KK vs BTN open — 77.7% against 586 combos (44.2% of hands)
- KK vs SB open — 77.2% against 534 combos (40.3% of hands)
- KK vs CO open — 76.7% against 366 combos (27.6% of hands)