--- title: "KQs vs J9s: preflop equity" url: "https://georgelipoker.com/equity/kqs-vs-j9s.md" canonical_url: "https://georgelipoker.com/equity/kqs-vs-j9s" last_updated: "2026-10-23" type: "reference" summary: "KQs is a big favorite over J9s before the flop: 64.32% to 35.68% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/kqs-vs-jto.md", "https://georgelipoker.com/equity/kqs-vs-t9s.md", "https://georgelipoker.com/equity/66-vs-j9s.md"] --- # KQs vs J9s: preflop equity KQs is a big favorite over J9s before the flop: 64.32% to 35.68% equity, counted exactly over every board, with the split by flop type and suit. The exact count puts KQs at 64.32% and J9s at 35.68% when the two hands see all five board cards. ## KQs against J9s: the numbers **Exact preflop results for KQs against J9s, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | KQs | 63.965 | 0.713 | 35.322 | 64.322 | | J9s | 35.322 | 0.713 | 63.965 | 35.678 | The matchup is suited hands on both sides, KQs against J9s. The two hands share no rank, which makes this a pure matchup of card strength, straight chances and flush chances. That is a modest edge, the kind that shows up over many hands and is easy to miss in one. Ties are 0.71% of the outcomes here; each tied board gives both hands half the pot. KQs ranks number 16 of 169 starting hands, and J9s ranks number 55, by equity against a random hand. **Boards behind the percentages: 27,396,864 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | KQs | 17,524,000 | 195,000 | 9,677,000 | | J9s | 9,677,000 | 195,000 | 17,524,000 | Exact total: 16 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. **KQs against J9s read as odds** | Hand | Equity as odds (to 1) | Wins one deal in | Loses one deal in | Pot odds needed to call (to 1) | | --- | --- | --- | --- | --- | | KQs | 1.803 | 1.563 | 2.831 | 0.555 | | J9s | 0.555 | 2.831 | 1.563 | 1.803 | The last column is the break-even price: the pot odds a call needs to offer, as a ratio of pot to call. ## Who is ahead on which flops Rainbow flops topped by a ten or better are the best for KQs (67.22%); low rainbow flops (nine high or lower) are the worst (56.92%). KQs stays ahead on all five textures. **KQs against J9s by flop texture, in percent** | Flop | Share of flops | KQs wins | Ties | J9s wins | KQs equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 23.867 | 67.091 | 0.256 | 32.653 | 67.219 | | Rainbow, nine or lower | 7.042 | 56.456 | 0.925 | 42.619 | 56.918 | | Two-tone | 46.727 | 63.538 | 0.364 | 36.098 | 63.720 | | Monotone | 5.273 | 59.408 | 3.473 | 37.119 | 61.144 | | Paired | 17.091 | 65.269 | 1.367 | 33.364 | 65.952 | 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 Each hand has a baseline against a random hand: 63.40% for KQs, 55.66% for J9s. Here the change is +0.92 and -19.98 points. **KQs and J9s 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 | | --- | --- | --- | --- | --- | | KQs, all flops | 64.322 | 63.400 | +0.922 | 1.01454 | | KQs, rainbow, ten or higher | 67.219 | 63.400 | +3.819 | 1.06024 | | KQs, rainbow, nine or lower | 56.918 | 63.400 | -6.482 | 0.89776 | | KQs, two-tone | 63.720 | 63.400 | +0.320 | 1.00505 | | KQs, monotone | 61.144 | 63.400 | -2.256 | 0.96442 | | KQs, paired | 65.952 | 63.400 | +2.552 | 1.04025 | | J9s, all flops | 35.678 | 55.662 | -19.984 | 0.64098 | | J9s, rainbow, ten or higher | 32.781 | 55.662 | -22.881 | 0.58893 | | J9s, rainbow, nine or lower | 43.082 | 55.662 | -12.580 | 0.77399 | | J9s, two-tone | 36.280 | 55.662 | -19.382 | 0.65179 | | J9s, monotone | 38.856 | 55.662 | -16.806 | 0.69807 | | J9s, paired | 34.048 | 55.662 | -21.614 | 0.61169 | ## Does a shared suit matter? Does suit overlap move the numbers? KQs has 66.83% when the hands share a suit and 63.49% when they do not. KQs does better with a shared suit, by 3.34 points. **KQs against J9s by suit overlap, in percent** | Deals | Specific deals | Share of deals | KQs wins | Ties | J9s wins | KQs equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 4 | 25.00 | 66.429 | 0.801 | 32.770 | 66.830 | | No shared suit | 12 | 75.00 | 63.144 | 0.684 | 36.172 | 63.486 | ## How often this matchup comes up Counting specific cards, KQs against J9s appears in 16 of the 1,624,350 ordered heads-up deals (0.0010%), and in 32 when the seats are swapped too (0.0020%). ## A worked example A $100 all-in from each player makes a $200 pot, and the exact equity says KQs gets $128.64 of it on average and J9s gets $71.36. Scaled to 1,000 deals, that is roughly 640 wins for KQs, 353 for J9s and 7 chopped pots. ## The same matchup from the other side Read it from the other side: J9s against KQs is the same matchup with the numbers swapped, so J9s holds 35.68% and KQs holds 64.32%. That address sends you back to this page. ## Keep exploring Try KsQs against Jh9h 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 KsQs against Jh9h in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=KsQs&p2=Jh9h) - [KQs combos](https://georgelipoker.com/combos/kqs.md) - [J9s combos](https://georgelipoker.com/combos/j9s.md) - [KQs vs JTo](https://georgelipoker.com/equity/kqs-vs-jto.md) - [KQs vs T9s](https://georgelipoker.com/equity/kqs-vs-t9s.md) - [66 vs J9s](https://georgelipoker.com/equity/66-vs-j9s.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 16 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 - [KQs vs JTo: preflop equity](https://georgelipoker.com/equity/kqs-vs-jto.md) - [KQs vs T9s: preflop equity](https://georgelipoker.com/equity/kqs-vs-t9s.md) - [66 vs J9s: preflop equity](https://georgelipoker.com/equity/66-vs-j9s.md)