Common preflop matchups
Rounded equities computed by full enumeration of all 1,712,304 possible boards. Click any matchup to load it into the calculator.
How to use the poker odds calculator
- Enter hole cards. Click a card slot, then a card in the deck, or type it: A h gives A♥. Leave a seat empty to model an unknown, random hand.
- Add the board. Fill 3, 4 or 5 community cards to see flop, turn and river equity. Leave it empty for preflop odds.
- Read the result. Equity is the share of the pot each hand wins on average, counting ties as split pots. Win and tie percentages are shown separately, together with how often each hand ends as a flush, a straight, two pair and so on.
- Share it. “Copy link” puts the whole scenario into the URL, so you can post it in a forum or send it to a coach.
How the odds are calculated
There are two honest ways to compute poker equity, and this calculator uses both. When every hand is known, it enumerates every possible run-out: 1,712,304 boards for a heads-up preflop spot, 990 for a flop, 44 for a turn. Those results are exact to the last decimal. When a seat is random or the space is too large (multi-way Omaha preflop, for example), it switches to Monte Carlo simulation with hundreds of thousands of random deals and reports the statistical margin next to the result. Press “More precision” to run five times as many samples.
The hand evaluator was verified against an independent implementation on 300,000 random seven-card hands with zero disagreements. Everything runs in a background thread in your browser: no upload, no server, no account.
Drawing odds you should know
| Draw | Outs | Flop → turn | Turn → river | Flop → river | Odds against (to river) |
|---|---|---|---|---|---|
| Pocket pair to a set | 2 | 4.3% | 4.3% | 8.4% | 10.9 : 1 |
| Gutshot straight draw | 4 | 8.5% | 8.7% | 16.5% | 5.1 : 1 |
| Two overcards | 6 | 12.8% | 13.0% | 24.1% | 3.1 : 1 |
| Open-ended straight draw | 8 | 17.0% | 17.4% | 31.5% | 2.2 : 1 |
| Flush draw | 9 | 19.1% | 19.6% | 35.0% | 1.9 : 1 |
| Flush draw + gutshot | 12 | 25.5% | 26.1% | 45.0% | 1.2 : 1 |
| Flush draw + open-ender | 15 | 31.9% | 32.6% | 54.1% | 0.85 : 1 |
The full table with 16 draws, plus equity against several opponents, is on the poker odds chart. To turn outs into a decision, use the pot odds calculator.