--- title: "AA vs KJs: preflop equity" url: "https://georgelipoker.com/equity/aa-vs-kjs.md" canonical_url: "https://georgelipoker.com/equity/aa-vs-kjs" last_updated: "2026-10-23" type: "reference" summary: "AA is a big favorite over KJs before the flop: 82.53% to 17.47% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/aa-vs-a8s.md", "https://georgelipoker.com/equity/aa-vs-kts.md", "https://georgelipoker.com/equity/kk-vs-kjs.md"] --- # AA vs KJs: preflop equity AA is a big favorite over KJs before the flop: 82.53% to 17.47% equity, counted exactly over every board, with the split by flop type and suit. Counting every board, the equity split is 82.53% for AA and 17.47% for KJs, so AA leads by 65.06 points. ## AA against KJs: the numbers **Exact preflop results for AA against KJs, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | AA | 82.328 | 0.407 | 17.265 | 82.531 | | KJs | 17.265 | 0.407 | 82.328 | 17.469 | AA is a pocket pair and KJs is a suited hand. Here a pair faces two cards that are both smaller, so the other hand needs to pair up and still be behind. A gap this wide means KJs is in trouble before the flop and has few good runouts. The tie share is 0.41%: on those boards the pot is chopped and neither hand wins outright. Ranked by equity against a random hand, AA is number 1 of the 169 starting hands and KJs is number 20. **Boards behind the percentages: 41,095,296 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | AA | 33,833,000 | 167,000 | 7,095,000 | | KJs | 7,095,000 | 167,000 | 33,833,000 | The total is exact: 24 specific deals times 1,712,304 boards. The three counts are approximate, worked out from the percentages to five decimals and rounded to the nearest thousand. **AA against KJs read as odds** | Hand | Equity as odds (to 1) | Wins one deal in | Loses one deal in | Pot odds needed to call (to 1) | | --- | --- | --- | --- | --- | | AA | 4.724 | 1.215 | 5.792 | 0.212 | | KJs | 0.212 | 5.792 | 1.215 | 4.724 | In the last column, a pot-to-call ratio at or above the figure makes a call break even or better at this equity. ## Who is ahead on which flops By flop texture, AA's equity runs from 76.39% on monotone flops up to 93.67% on low rainbow flops (nine high or lower). AA stays ahead on all five textures, but the swing between them is large, so how the flop looks matters a great deal. **AA against KJs by flop texture, in percent** | Flop | Share of flops | AA wins | Ties | KJs wins | AA equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 23.138 | 81.519 | 0.117 | 18.364 | 81.578 | | Rainbow, nine or lower | 7.771 | 93.079 | 1.177 | 5.744 | 93.668 | | Two-tone | 46.545 | 80.646 | 0.347 | 19.007 | 80.820 | | Monotone | 5.212 | 75.179 | 2.420 | 22.401 | 76.389 | | Paired | 17.334 | 85.251 | 0.007 | 14.742 | 85.255 | Read the flop types this way: rainbow has three suits, two-tone has two cards of one suit, monotone has three, and paired repeats a rank. ## Compared with a random hand Start from the random-hand figures, 85.20% for AA and 62.57% for KJs. This opponent changes them by -2.67 and -45.10 points. **AA and KJs here compared with each against a random hand, in percent** | Case | Equity here | Against a random hand | Change in points | Times the random-hand equity | | --- | --- | --- | --- | --- | | AA, all flops | 82.531 | 85.204 | -2.673 | 0.96863 | | AA, rainbow, ten or higher | 81.578 | 85.204 | -3.626 | 0.95744 | | AA, rainbow, nine or lower | 93.668 | 85.204 | +8.464 | 1.09934 | | AA, two-tone | 80.820 | 85.204 | -4.384 | 0.94855 | | AA, monotone | 76.389 | 85.204 | -8.815 | 0.89654 | | AA, paired | 85.255 | 85.204 | +0.051 | 1.00060 | | KJs, all flops | 17.469 | 62.567 | -45.098 | 0.27920 | | KJs, rainbow, ten or higher | 18.422 | 62.567 | -44.145 | 0.29444 | | KJs, rainbow, nine or lower | 6.332 | 62.567 | -56.235 | 0.10120 | | KJs, two-tone | 19.180 | 62.567 | -43.387 | 0.30655 | | KJs, monotone | 23.611 | 62.567 | -38.956 | 0.37737 | | KJs, paired | 14.745 | 62.567 | -47.822 | 0.23567 | ## Does a shared suit matter? Suit overlap shows up in the numbers. With a suit in common AA has 83.15% equity, and with none in common it has 81.92%. AA does better with a shared suit, by 1.23 points. **AA against KJs by suit overlap, in percent** | Deals | Specific deals | Share of deals | AA wins | Ties | KJs wins | AA equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 12 | 50.00 | 82.921 | 0.449 | 16.630 | 83.146 | | No shared suit | 12 | 50.00 | 81.734 | 0.366 | 17.900 | 81.917 | ## How often this matchup comes up Counting specific cards, AA against KJs appears in 24 of the 1,624,350 ordered heads-up deals (0.0015%), and in 48 when the seats are swapped too (0.0030%). ## A worked example A $100 all-in from each player makes a $200 pot, and the exact equity says AA gets $165.06 of it on average and KJs gets $34.94. Out of 1,000 deals you should see around 823 outright wins for AA, 173 for KJs, and 4 split pots. ## The same matchup from the other side KJs against AA adds nothing new: it is 17.47% for KJs and 82.53% for AA, the same figures reversed. ## Keep exploring Open the calculator with AsAh against KdJd already entered, a deal with no shared suit, and change any card to try your own hand. The matchups after it each swap one hand for a nearby one in the ranking. - [Open AsAh against KdJd in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=AsAh&p2=KdJd) - [AA combos](https://georgelipoker.com/combos/aa.md) - [KJs combos](https://georgelipoker.com/combos/kjs.md) - [AA vs A8s](https://georgelipoker.com/equity/aa-vs-a8s.md) - [AA vs KTs](https://georgelipoker.com/equity/aa-vs-kts.md) - [KK vs KJs](https://georgelipoker.com/equity/kk-vs-kjs.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed All 1,712,304 five-card boards are dealt for every suit pattern among the 24 specific deals of AA against KJs, and both hands are scored on each. That is a full count, so the percentages are exact. Ties are half a win each, and each board appears once per flop it contains. Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used. ## Related - [AA vs A8s: preflop equity](https://georgelipoker.com/equity/aa-vs-a8s.md) - [AA vs KTs: preflop equity](https://georgelipoker.com/equity/aa-vs-kts.md) - [KK vs KJs: preflop equity](https://georgelipoker.com/equity/kk-vs-kjs.md)