--- title: "33 vs 64s: preflop equity" url: "https://georgelipoker.com/equity/33-vs-64s.md" canonical_url: "https://georgelipoker.com/equity/33-vs-64s" last_updated: "2026-10-23" type: "reference" summary: "33 vs 64s is close to a coin flip before the flop: 50.31% to 49.69% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/33-vs-53s.md", "https://georgelipoker.com/equity/33-vs-43s.md", "https://georgelipoker.com/equity/t8s-vs-64s.md"] --- # 33 vs 64s: preflop equity 33 vs 64s is close to a coin flip before the flop: 50.31% to 49.69% equity, counted exactly over every board, with the split by flop type and suit. Before any board card is dealt, 33 holds 50.31% equity against 64s, which leaves 64s with 49.69%. ## 33 against 64s: the numbers **Exact preflop results for 33 against 64s, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | 33 | 49.023 | 2.582 | 48.395 | 50.314 | | 64s | 48.395 | 2.582 | 49.023 | 49.686 | 33 is a pocket pair and 64s is a suited hand. One hand holds a pair and the other holds two cards that both outrank it, which keeps the equity closer than most people expect. That is a slim edge: neither hand is far ahead. 2.58% of boards are ties, so the equity of each hand is its win rate plus half of that. For context, 33 sits at number 66 of 169 starting hands and 64s at number 138 when each is run against a random hand. **Boards behind the percentages: 41,095,296 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | 33 | 20,146,000 | 1,061,000 | 19,888,000 | | 64s | 19,888,000 | 1,061,000 | 20,146,000 | Exact total: 24 deals times 1,712,304 boards. The other three counts come from the five-decimal percentages and are rounded to the nearest thousand, so read them as approximate. **33 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) | | --- | --- | --- | --- | --- | | 33 | 1.013 | 2.040 | 2.066 | 0.988 | | 64s | 0.988 | 2.066 | 2.040 | 1.013 | 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 Split by what the flop looks like, 33 peaks at 54.25% on paired flops and bottoms out at 39.67% on low rainbow flops (nine high or lower). 64s is ahead on low rainbow flops (nine high or lower), two-tone flops and monotone flops, even though it trails 33 when every flop is counted. **33 against 64s by flop texture, in percent** | Flop | Share of flops | 33 wins | Ties | 64s wins | 33 equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 25.844 | 52.171 | 1.473 | 46.356 | 52.907 | | Rainbow, nine or lower | 5.065 | 39.069 | 1.198 | 59.733 | 39.668 | | Two-tone | 46.545 | 47.961 | 1.353 | 50.686 | 48.638 | | Monotone | 5.212 | 47.656 | 4.046 | 48.298 | 49.679 | | Paired | 17.334 | 50.501 | 7.501 | 41.998 | 54.252 | Rainbow flops have three suits, two-tone flops repeat one suit, monotone flops are all one suit, and paired flops repeat a rank. ## Compared with a random hand The table below sets each hand against its own random-hand baseline: a change of -3.38 points for 33, from 53.69%, and +8.36 for 64s, from 41.33%. **33 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 | | --- | --- | --- | --- | --- | | 33, all flops | 50.314 | 53.693 | -3.379 | 0.93707 | | 33, rainbow, ten or higher | 52.907 | 53.693 | -0.786 | 0.98536 | | 33, rainbow, nine or lower | 39.668 | 53.693 | -14.025 | 0.73879 | | 33, two-tone | 48.638 | 53.693 | -5.055 | 0.90585 | | 33, monotone | 49.679 | 53.693 | -4.014 | 0.92524 | | 33, paired | 54.252 | 53.693 | +0.559 | 1.01041 | | 64s, all flops | 49.686 | 41.333 | +8.353 | 1.20209 | | 64s, rainbow, ten or higher | 47.093 | 41.333 | +5.760 | 1.13936 | | 64s, rainbow, nine or lower | 60.332 | 41.333 | +18.999 | 1.45966 | | 64s, two-tone | 51.362 | 41.333 | +10.029 | 1.24264 | | 64s, monotone | 50.321 | 41.333 | +8.988 | 1.21745 | | 64s, paired | 45.748 | 41.333 | +4.415 | 1.10682 | ## Does a shared suit matter? Split by suits, the deals give 33 50.44% when the hands overlap in a suit and 50.19% when they do not. 33 does better with a shared suit, by 0.25 points. **33 against 64s by suit overlap, in percent** | Deals | Specific deals | Share of deals | 33 wins | Ties | 64s wins | 33 equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 12 | 50.00 | 49.136 | 2.610 | 48.254 | 50.441 | | No shared suit | 12 | 50.00 | 48.911 | 2.554 | 48.535 | 50.188 | ## How often this matchup comes up 33 against 64s is made up of 24 specific-card matchups in one seat order, 0.0015% of the 1,624,350 ordered deals, and 48 counting both seat orders, 0.0030%. ## A worked example Put $100 each into a $200 pot and deal every board once: 33 averages $100.62 back, ahead of its $100 by $0.62, while 64s averages $99.38, short of its $100 by $0.62. Out of 1,000 deals you should see around 490 outright wins for 33, 484 for 64s, and 26 split pots. ## The same matchup from the other side 64s against 33 adds nothing new: it is 49.69% for 64s and 50.31% for 33, the same figures reversed. ## Keep exploring Try 3s3h 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 3s3h against 6d4d in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=3s3h&p2=6d4d) - [33 combos](https://georgelipoker.com/combos/33.md) - [64s combos](https://georgelipoker.com/combos/64s.md) - [33 vs 53s](https://georgelipoker.com/equity/33-vs-53s.md) - [33 vs 43s](https://georgelipoker.com/equity/33-vs-43s.md) - [T8s vs 64s](https://georgelipoker.com/equity/t8s-vs-64s.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed The page is built from a full enumeration: 1,712,304 boards, every suit pattern of the 24 specific deals, both seven-card hands evaluated. A tie is worth half a win to each hand, and a board is tallied under each of its ten possible flops for the texture rows. Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used. ## Related - [33 vs 53s: preflop equity](https://georgelipoker.com/equity/33-vs-53s.md) - [33 vs 43s: preflop equity](https://georgelipoker.com/equity/33-vs-43s.md) - [T8s vs 64s: preflop equity](https://georgelipoker.com/equity/t8s-vs-64s.md)