--- title: "AA vs 43s: preflop equity" url: "https://georgelipoker.com/equity/aa-vs-43s.md" canonical_url: "https://georgelipoker.com/equity/aa-vs-43s" last_updated: "2026-10-23" type: "reference" summary: "AA is a big favorite over 43s before the flop: 80.96% to 19.04% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/kk-vs-43s.md", "https://georgelipoker.com/equity/aa-vs-53s.md", "https://georgelipoker.com/equity/aa-vs-64s.md"] --- # AA vs 43s: preflop equity AA is a big favorite over 43s before the flop: 80.96% to 19.04% equity, counted exactly over every board, with the split by flop type and suit. The exact count puts AA at 80.96% and 43s at 19.04% when the two hands see all five board cards. ## AA against 43s: the numbers **Exact preflop results for AA against 43s, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | AA | 80.720 | 0.478 | 18.802 | 80.959 | | 43s | 18.802 | 0.478 | 80.720 | 19.041 | AA and 43s are a pocket pair and a suited hand, in that order. A pair against two lower cards is a lopsided matchup: the pair is ahead and the other hand has no overcard to catch. That is a heavy lead: 43s needs the board to help it on most runouts and still falls behind far more often than not. About 0.48% of boards chop the pot, which is why equity sits slightly above the win figure for both hands. Among the 169 starting hands, AA is number 1 and 43s is number 150 by strength 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 | 33,172,000 | 196,000 | 7,727,000 | | 43s | 7,727,000 | 196,000 | 33,172,000 | The total is exact: 24 specific deals times 1,712,304 boards. The three counts are approximate, worked out from the percentages to five decimals and rounded to the nearest thousand. **AA 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) | | --- | --- | --- | --- | --- | | AA | 4.252 | 1.239 | 5.319 | 0.235 | | 43s | 0.235 | 5.319 | 1.239 | 4.252 | 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 Split by what the flop looks like, AA peaks at 85.99% on rainbow flops topped by a ten or better and bottoms out at 70.25% 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 43s by flop texture, in percent** | Flop | Share of flops | AA wins | Ties | 43s wins | AA equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 24.595 | 85.852 | 0.276 | 13.872 | 85.990 | | Rainbow, nine or lower | 6.314 | 69.651 | 1.188 | 29.161 | 70.245 | | Two-tone | 46.545 | 78.917 | 0.424 | 20.659 | 79.129 | | Monotone | 5.212 | 73.897 | 2.609 | 23.494 | 75.202 | | Paired | 17.334 | 84.364 | 0.007 | 15.629 | 84.368 | 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 Compared with a random opponent, this matchup shifts AA from 85.20% by -4.24 points and 43s from 38.64% by -19.60 points. **AA 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 | | --- | --- | --- | --- | --- | | AA, all flops | 80.959 | 85.204 | -4.245 | 0.95018 | | AA, rainbow, ten or higher | 85.990 | 85.204 | +0.786 | 1.00922 | | AA, rainbow, nine or lower | 70.245 | 85.204 | -14.959 | 0.82443 | | AA, two-tone | 79.129 | 85.204 | -6.075 | 0.92870 | | AA, monotone | 75.202 | 85.204 | -10.002 | 0.88261 | | AA, paired | 84.368 | 85.204 | -0.836 | 0.99019 | | 43s, all flops | 19.041 | 38.642 | -19.601 | 0.49275 | | 43s, rainbow, ten or higher | 14.010 | 38.642 | -24.632 | 0.36256 | | 43s, rainbow, nine or lower | 29.755 | 38.642 | -8.887 | 0.77002 | | 43s, two-tone | 20.871 | 38.642 | -17.771 | 0.54011 | | 43s, monotone | 24.798 | 38.642 | -13.844 | 0.64174 | | 43s, paired | 15.632 | 38.642 | -23.010 | 0.40453 | ## Does a shared suit matter? Suit overlap shows up in the numbers. With a suit in common AA has 81.54% equity, and with none in common it has 80.37%. AA does better with a shared suit, by 1.17 points. **AA against 43s by suit overlap, in percent** | Deals | Specific deals | Share of deals | AA wins | Ties | 43s wins | AA equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 12 | 50.00 | 81.288 | 0.513 | 18.199 | 81.544 | | No shared suit | 12 | 50.00 | 80.153 | 0.442 | 19.405 | 80.374 | ## How often this matchup comes up You will meet this exact matchup 0.0030% of the time in a random heads-up deal: 48 of 1,624,350, counting either seat order. ## A worked example Take a $200 pot built from $100 each. AA's equity of 80.96% is worth $161.92, a $61.92 edge, and 43s' 19.04% is worth $38.08, which is $61.92 under its stake. A thousand deals look like this: AA takes 807, 43s takes 188, 5 are ties. ## The same matchup from the other side 43s versus AA is this same page seen from the other hand: 19.04% for 43s, 80.96% for AA. ## Keep exploring Try AsAh against 4d3d 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 4d3d in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=AsAh&p2=4d3d) - [AA combos](https://georgelipoker.com/combos/aa.md) - [43s combos](https://georgelipoker.com/combos/43s.md) - [KK vs 43s](https://georgelipoker.com/equity/kk-vs-43s.md) - [AA vs 53s](https://georgelipoker.com/equity/aa-vs-53s.md) - [AA vs 64s](https://georgelipoker.com/equity/aa-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 - [KK vs 43s: preflop equity](https://georgelipoker.com/equity/kk-vs-43s.md) - [AA vs 53s: preflop equity](https://georgelipoker.com/equity/aa-vs-53s.md) - [AA vs 64s: preflop equity](https://georgelipoker.com/equity/aa-vs-64s.md)