--- title: "JTo vs 43s: preflop equity" url: "https://georgelipoker.com/equity/jto-vs-43s.md" canonical_url: "https://georgelipoker.com/equity/jto-vs-43s" last_updated: "2026-10-23" type: "reference" summary: "JTo is a big favorite over 43s before the flop: 61.62% to 38.38% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/t9s-vs-43s.md", "https://georgelipoker.com/equity/jto-vs-53s.md", "https://georgelipoker.com/equity/j9s-vs-43s.md"] --- # JTo vs 43s: preflop equity JTo is a big favorite over 43s before the flop: 61.62% to 38.38% equity, counted exactly over every board, with the split by flop type and suit. If JTo and 43s get all the chips in before the flop, JTo owns 61.62% of the pot in the long run and 43s owns 38.38%. ## JTo against 43s: the numbers **Exact preflop results for JTo against 43s, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | JTo | 61.024 | 1.185 | 37.791 | 61.617 | | 43s | 37.791 | 1.185 | 61.024 | 38.383 | We compare an offsuit hand with a suited hand. With no overlap in ranks, every card that pairs one hand is a card that does not pair the other. The lead is steady rather than large, and the flop still has plenty of say in who wins. 1.19% of boards are ties, so the equity of each hand is its win rate plus half of that. By strength against a random hand, JTo holds place 57 of 169 and 43s holds place 150. **Boards behind the percentages: 82,190,592 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | JTo | 50,156,000 | 974,000 | 31,061,000 | | 43s | 31,061,000 | 974,000 | 50,156,000 | The board total is exact, 48 deals at 1,712,304 boards each. Won, tied and lost counts are rounded to the nearest thousand from the five-decimal percentages. **JTo against 43s read as odds** | Hand | Equity as odds (to 1) | Wins one deal in | Loses one deal in | Pot odds needed to call (to 1) | | --- | --- | --- | --- | --- | | JTo | 1.605 | 1.639 | 2.646 | 0.623 | | 43s | 0.623 | 2.646 | 1.639 | 1.605 | 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 By flop texture, JTo's equity runs from 39.47% on low rainbow flops (nine high or lower) up to 69.25% on rainbow flops topped by a ten or better. On low rainbow flops (nine high or lower) the numbers flip and 43s is the one ahead. **JTo against 43s by flop texture, in percent** | Flop | Share of flops | JTo wins | Ties | 43s wins | JTo equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 24.717 | 68.929 | 0.644 | 30.427 | 69.251 | | Rainbow, nine or lower | 6.313 | 39.102 | 0.736 | 60.162 | 39.470 | | Two-tone | 46.667 | 59.933 | 0.628 | 39.439 | 60.247 | | Monotone | 5.212 | 58.343 | 2.789 | 38.868 | 59.738 | | Paired | 17.091 | 61.489 | 3.164 | 35.347 | 63.071 | 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 Each hand has a baseline against a random hand: 55.25% for JTo, 38.64% for 43s. Here the change is +6.37 and -0.26 points. **JTo and 43s 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 | | --- | --- | --- | --- | --- | | JTo, all flops | 61.617 | 55.248 | +6.369 | 1.11528 | | JTo, rainbow, ten or higher | 69.251 | 55.248 | +14.003 | 1.25346 | | JTo, rainbow, nine or lower | 39.470 | 55.248 | -15.778 | 0.71442 | | JTo, two-tone | 60.247 | 55.248 | +4.999 | 1.09048 | | JTo, monotone | 59.738 | 55.248 | +4.490 | 1.08127 | | JTo, paired | 63.071 | 55.248 | +7.823 | 1.14160 | | 43s, all flops | 38.383 | 38.642 | -0.259 | 0.99330 | | 43s, rainbow, ten or higher | 30.749 | 38.642 | -7.893 | 0.79574 | | 43s, rainbow, nine or lower | 60.530 | 38.642 | +21.888 | 1.56643 | | 43s, two-tone | 39.753 | 38.642 | +1.111 | 1.02875 | | 43s, monotone | 40.262 | 38.642 | +1.620 | 1.04192 | | 43s, paired | 36.929 | 38.642 | -1.713 | 0.95567 | ## Does a shared suit matter? When the hands share a suit, JTo holds 62.34%; when they do not, it holds 60.89%. JTo does better with a shared suit, by 1.45 points. **JTo against 43s by suit overlap, in percent** | Deals | Specific deals | Share of deals | JTo wins | Ties | 43s wins | JTo equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 24 | 50.00 | 61.729 | 1.223 | 37.048 | 62.341 | | No shared suit | 24 | 50.00 | 60.319 | 1.147 | 38.534 | 60.893 | ## How often this matchup comes up Counting specific cards, JTo against 43s appears in 48 of the 1,624,350 ordered heads-up deals (0.0030%), and in 96 when the seats are swapped too (0.0059%). ## A worked example Try it with money: two players each put in $100 and the whole board runs out every possible way. JTo averages $123.24 from the $200, up $23.24; 43s averages $76.76, down $23.24. Out of 1,000 deals you should see around 610 outright wins for JTo, 378 for 43s, and 12 split pots. ## The same matchup from the other side 43s versus JTo is this same page seen from the other hand: 38.38% for 43s, 61.62% for JTo. ## Keep exploring JsTh against 4d3d 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 JsTh against 4d3d in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=JsTh&p2=4d3d) - [JTo combos](https://georgelipoker.com/combos/jto.md) - [43s combos](https://georgelipoker.com/combos/43s.md) - [T9s vs 43s](https://georgelipoker.com/equity/t9s-vs-43s.md) - [JTo vs 53s](https://georgelipoker.com/equity/jto-vs-53s.md) - [J9s vs 43s](https://georgelipoker.com/equity/j9s-vs-43s.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed We counted every case. Each suit pattern of the 48 specific JTo against 43s deals meets all 1,712,304 boards, and the better five-card hand wins; a split pot is half a win each. The flop table reads each board under all ten of its three-card flops. Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used. ## Related - [T9s vs 43s: preflop equity](https://georgelipoker.com/equity/t9s-vs-43s.md) - [JTo vs 53s: preflop equity](https://georgelipoker.com/equity/jto-vs-53s.md) - [J9s vs 43s: preflop equity](https://georgelipoker.com/equity/j9s-vs-43s.md)