5-Card Poker Hand Odds (Standard Deck)
Poker odds calculators determine the probability of winning a hand or completing a drawing hand using combinatorics to count winning outcomes relative to total possible outcomes in a deck.
- 1Preflop equity = percentage of hands won across all simulated run-outs
- 2Outs = unseen cards that complete your drawing hand
- 3Rule of 4: multiply outs by 4 on the flop for % chance to hit by river
- 4Rule of 2: multiply outs by 2 on the turn for % chance to hit river
Flush draw (9 outs) on the flop=~35% to complete by river using rule of 4
Open-ended straight draw (8 outs) on turn=~17% to hit on river using rule of 2
Pocket Aces preflop vs random hand=~85% equity to win the hand
| Draw Type | Outs | Flop to River % | Turn to River % |
|---|---|---|---|
| Flush draw | 9 | 35% | 19% |
| Open-ended straight | 8 | 31% | 17% |
| Gutshot straight | 4 | 17% | 9% |
| Two overcards | 6 | 24% | 13% |
| Set to full house | 7 | 28% | 15% |
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