AA vs 55 equity
Preflop, AA beats 55 with exact equity 80.89% vs 19.11%: AA wins 80.68%, 55 wins 18.90%, ties 0.41%. Computed by exhaustively enumerating all 10,273,824 deals.
| AA Win | 80.68% |
|---|---|
| 55 Win | 18.90% |
| Tie | 0.41% |
| AA Equity (win + tie/2) | 80.89% |
| 55 Equity (win + tie/2) | 19.11% |
| Boards enumerated | 10,273,824 |
| Suit combinations | 6 |
| Losing frequency | AA loses 1 in 5.3 |
Note: class-average values. Specific suit combinations (e.g. shared suits) shift the numbers by a few tenths of a percent.
FAQ
Who wins more often, AA or 55?
AA is ahead: AA has 80.89% equity vs 19.11% (exact enumeration).
How often do AA vs 55 tie?
Ties occur 0.41% of the time (42,492 of 10,273,824 outcomes).
Are these numbers simulated?
No. All 10,273,824 board combinations are exhaustively enumerated — mathematically exact and reproducible.
Related
Figures from app/data/matchup-matrix (exhaustive engine scripts/gen-matchup-matrix.mjs, cross-validated against lib/poker-equity.ts)
Cite this page: Pailiku, “AA vs 55 equity”, pailiku.com/matchups/aa-vs-55 (2026).