--- title: "AA vs 64s: preflop equity" url: "https://georgelipoker.com/equity/aa-vs-64s.md" canonical_url: "https://georgelipoker.com/equity/aa-vs-64s" last_updated: "2026-10-23" type: "reference" summary: "AA is a big favorite over 64s before the flop: 79.15% to 20.85% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/aa-vs-53s.md", "https://georgelipoker.com/equity/aa-vs-43s.md", "https://georgelipoker.com/equity/kk-vs-64s.md"] --- # AA vs 64s: preflop equity AA is a big favorite over 64s before the flop: 79.15% to 20.85% equity, counted exactly over every board, with the split by flop type and suit. Dealt all in against each other, AA takes 79.15% of the pot on average and 64s takes the other 20.85%. ## AA against 64s: the numbers **Exact preflop results for AA against 64s, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | AA | 78.934 | 0.425 | 20.641 | 79.146 | | 64s | 20.641 | 0.425 | 78.934 | 20.854 | AA and 64s are a pocket pair and a suited hand, in that order. Here a pair faces two cards that are both smaller, so the other hand needs to pair up and still be behind. AA is the clear favorite, though 64s gets there on roughly one board in 5. Split pots make up 0.43% of the boards, and both equity figures count them as half a win each. AA ranks number 1 of 169 starting hands, and 64s ranks number 138, by equity against a random hand. **Boards behind the percentages: 41,095,296 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | AA | 32,438,000 | 175,000 | 8,482,000 | | 64s | 8,482,000 | 175,000 | 32,438,000 | The board total is exact, 24 deals at 1,712,304 boards each. Won, tied and lost counts are rounded to the nearest thousand from the five-decimal percentages. **AA against 64s 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 | 3.795 | 1.267 | 4.845 | 0.263 | | 64s | 0.263 | 4.845 | 1.267 | 3.795 | The final column gives the least the pot must offer for each unit called for a call to break even at this equity. ## Who is ahead on which flops If you know the kind of flop that came, the numbers shift: AA holds 84.91% on rainbow flops topped by a ten or better and 64.26% 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 64s by flop texture, in percent** | Flop | Share of flops | AA wins | Ties | 64s wins | AA equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 24.595 | 84.788 | 0.249 | 14.963 | 84.912 | | Rainbow, nine or lower | 6.314 | 63.776 | 0.971 | 35.253 | 64.261 | | Two-tone | 46.545 | 77.043 | 0.369 | 22.588 | 77.228 | | Monotone | 5.212 | 72.599 | 2.475 | 24.926 | 73.836 | | Paired | 17.334 | 83.132 | 0.007 | 16.861 | 83.136 | A rainbow flop shows three suits, a two-tone flop repeats one suit, a monotone flop is a single suit, and a paired flop repeats a rank. ## Compared with a random hand How much does the opponent matter? Compared with its random-hand 85.20%, AA changes by -6.05 points, and 64s, from 41.33%, by -20.48. **AA and 64s 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 | 79.146 | 85.204 | -6.058 | 0.92890 | | AA, rainbow, ten or higher | 84.912 | 85.204 | -0.292 | 0.99657 | | AA, rainbow, nine or lower | 64.261 | 85.204 | -20.943 | 0.75420 | | AA, two-tone | 77.228 | 85.204 | -7.976 | 0.90639 | | AA, monotone | 73.836 | 85.204 | -11.368 | 0.86658 | | AA, paired | 83.136 | 85.204 | -2.068 | 0.97573 | | 64s, all flops | 20.854 | 41.333 | -20.479 | 0.50454 | | 64s, rainbow, ten or higher | 15.088 | 41.333 | -26.245 | 0.36504 | | 64s, rainbow, nine or lower | 35.739 | 41.333 | -5.594 | 0.86466 | | 64s, two-tone | 22.772 | 41.333 | -18.561 | 0.55094 | | 64s, monotone | 26.164 | 41.333 | -15.169 | 0.63301 | | 64s, paired | 16.864 | 41.333 | -24.469 | 0.40800 | ## Does a shared suit matter? Split by suits, the deals give AA 79.73% when the hands overlap in a suit and 78.56% when they do not. AA does better with a shared suit, by 1.17 points. **AA against 64s by suit overlap, in percent** | Deals | Specific deals | Share of deals | AA wins | Ties | 64s wins | AA equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 12 | 50.00 | 79.497 | 0.465 | 20.038 | 79.730 | | No shared suit | 12 | 50.00 | 78.371 | 0.384 | 21.245 | 78.563 | ## How often this matchup comes up The class pair covers 24 combinations of specific cards in a fixed seat order, 0.0015% of 1,624,350, and 48 (0.0030%) in either order. ## A worked example A $100 all-in from each player makes a $200 pot, and the exact equity says AA gets $158.30 of it on average and 64s gets $41.70. Scaled to 1,000 deals, that is roughly 789 wins for AA, 207 for 64s and 4 chopped pots. ## The same matchup from the other side The mirror image, 64s against AA, is 20.85% to 79.15%, and its address redirects to this page. ## Keep exploring Try AsAh against 6d4d in the calculator: the hands share no suit, and every card can be changed. The links after it are the closest matchups in the ranking. - [Open AsAh against 6d4d in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=AsAh&p2=6d4d) - [AA combos](https://georgelipoker.com/combos/aa.md) - [64s combos](https://georgelipoker.com/combos/64s.md) - [AA vs 53s](https://georgelipoker.com/equity/aa-vs-53s.md) - [AA vs 43s](https://georgelipoker.com/equity/aa-vs-43s.md) - [KK vs 64s](https://georgelipoker.com/equity/kk-vs-64s.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed Nothing here is simulated. The 24 deals of AA against 64s fall into a few suit patterns, each dealt against all 1,712,304 boards, with both best five-card hands compared on every board. Ties give each hand half a win, and the flop rows count a board under each of its ten flops. Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used. ## Related - [AA vs 53s: preflop equity](https://georgelipoker.com/equity/aa-vs-53s.md) - [AA vs 43s: preflop equity](https://georgelipoker.com/equity/aa-vs-43s.md) - [KK vs 64s: preflop equity](https://georgelipoker.com/equity/kk-vs-64s.md)