--- title: "77 vs 55: preflop equity" url: "https://georgelipoker.com/equity/77-vs-55.md" canonical_url: "https://georgelipoker.com/equity/77-vs-55" last_updated: "2026-10-23" type: "reference" summary: "77 is a big favorite over 55 before the flop: 81.24% to 18.76% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/77-vs-qjs.md", "https://georgelipoker.com/equity/77-vs-k9s.md", "https://georgelipoker.com/equity/aqs-vs-55.md"] --- # 77 vs 55: preflop equity 77 is a big favorite over 55 before the flop: 81.24% to 18.76% equity, counted exactly over every board, with the split by flop type and suit. The exact count puts 77 at 81.24% and 55 at 18.76% when the two hands see all five board cards. ## 77 against 55: the numbers **Exact preflop results for 77 against 55, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | 77 | 80.546 | 1.385 | 18.069 | 81.238 | | 55 | 18.069 | 1.385 | 80.546 | 18.762 | 77 meets 55, and both are pocket pairs. Two pairs against each other is a one-way street: the lower pair needs one of its two remaining cards. 77 is a big favorite here before anyone sees a flop. A split pot comes up on 1.39% of boards, so the wins and the equity differ by half of that. By strength against a random hand, 77 holds place 9 of 169 and 55 holds place 27. **Boards behind the percentages: 61,642,944 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | 77 | 49,651,000 | 854,000 | 11,138,000 | | 55 | 11,138,000 | 854,000 | 49,651,000 | The board total is exact, 36 deals at 1,712,304 boards each. Won, tied and lost counts are rounded to the nearest thousand from the five-decimal percentages. **77 against 55 read as odds** | Hand | Equity as odds (to 1) | Wins one deal in | Loses one deal in | Pot odds needed to call (to 1) | | --- | --- | --- | --- | --- | | 77 | 4.330 | 1.242 | 5.534 | 0.231 | | 55 | 0.231 | 5.534 | 1.242 | 4.330 | The last column is the smallest pot odds, written as a pot-to-call ratio, at which a call breaks even with this equity. ## Who is ahead on which flops Across the five flop textures 77's equity moves by 11.74 points, from 73.45% on low rainbow flops (nine high or lower) to 85.19% on paired flops. 77 stays ahead on all five textures. **77 against 55 by flop texture, in percent** | Flop | Share of flops | 77 wins | Ties | 55 wins | 77 equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 25.844 | 82.126 | 0.864 | 17.010 | 82.558 | | Rainbow, nine or lower | 5.065 | 73.181 | 0.531 | 26.288 | 73.447 | | Two-tone | 46.363 | 80.066 | 0.795 | 19.139 | 80.463 | | Monotone | 5.152 | 74.621 | 2.337 | 23.042 | 75.789 | | Paired | 17.576 | 83.349 | 3.673 | 12.978 | 85.186 | Flop types: rainbow means three different suits, two-tone means one suit twice, monotone means one suit three times, paired means a repeated rank. ## Compared with a random hand A random hand would give 77 66.24% and 55 60.33%. Against each other the change is +15.00 points for 77 and -41.57 for 55. **77 and 55 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 | | --- | --- | --- | --- | --- | | 77, all flops | 81.238 | 66.236 | +15.002 | 1.22649 | | 77, rainbow, ten or higher | 82.558 | 66.236 | +16.322 | 1.24642 | | 77, rainbow, nine or lower | 73.447 | 66.236 | +7.211 | 1.10887 | | 77, two-tone | 80.463 | 66.236 | +14.227 | 1.21479 | | 77, monotone | 75.789 | 66.236 | +9.553 | 1.14423 | | 77, paired | 85.186 | 66.236 | +18.950 | 1.28610 | | 55, all flops | 18.762 | 60.325 | -41.563 | 0.31102 | | 55, rainbow, ten or higher | 17.442 | 60.325 | -42.883 | 0.28913 | | 55, rainbow, nine or lower | 26.553 | 60.325 | -33.772 | 0.44017 | | 55, two-tone | 19.537 | 60.325 | -40.788 | 0.32386 | | 55, monotone | 24.211 | 60.325 | -36.114 | 0.40134 | | 55, paired | 14.814 | 60.325 | -45.511 | 0.24557 | ## Does a shared suit matter? Split by suits, the deals give 77 81.37% when the hands overlap in a suit and 80.56% when they do not. 77 does better with a shared suit, by 0.81 points. **77 against 55 by suit overlap, in percent** | Deals | Specific deals | Share of deals | 77 wins | Ties | 55 wins | 77 equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 30 | 83.33 | 80.675 | 1.399 | 17.926 | 81.374 | | No shared suit | 6 | 16.67 | 79.903 | 1.311 | 18.786 | 80.559 | ## How often this matchup comes up Out of 1,624,350 ways to deal two seats two cards each, 36 are 77 in one seat and 55 in the other (0.0022%); with the seats swapped too, 72 (0.0044%). ## A worked example With $100 from each side, the $200 pot is split on average as $162.48 for 77 and $37.52 for 55; the first side gains $62.48 per all-in and the second gives up $62.48. A thousand deals look like this: 77 takes 805, 55 takes 181, 14 are ties. ## The same matchup from the other side Read it from the other side: 55 against 77 is the same matchup with the numbers swapped, so 55 holds 18.76% and 77 holds 81.24%. That address sends you back to this page. ## Keep exploring 7s7h against 5d5c is a ready-made deal for the calculator, with no suit in common between the hands. The neighboring matchups below replace one hand with another of similar strength. - [Open 7s7h against 5d5c in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=7s7h&p2=5d5c) - [77 combos](https://georgelipoker.com/combos/77.md) - [55 combos](https://georgelipoker.com/combos/55.md) - [77 vs QJs](https://georgelipoker.com/equity/77-vs-qjs.md) - [77 vs K9s](https://georgelipoker.com/equity/77-vs-k9s.md) - [AQs vs 55](https://georgelipoker.com/equity/aqs-vs-55.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed Each figure is a complete count over boards. Take the 36 specific deals, group them by suit pattern, deal all 1,712,304 boards against each, and compare the two seven-card hands. Equity counts a tie as half a win; the flop rows use every one of a board's ten flops. Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used. ## Related - [77 vs QJs: preflop equity](https://georgelipoker.com/equity/77-vs-qjs.md) - [77 vs K9s: preflop equity](https://georgelipoker.com/equity/77-vs-k9s.md) - [AQs vs 55: preflop equity](https://georgelipoker.com/equity/aqs-vs-55.md)