Draw odds explorer
Pick a draw or build your own. The cards that complete it light up in the deck, with the exact probability of hitting — and the table shortcut beside it, so you can see when the shortcut is good enough.
The 15 highlighted cards are your outs.
What you’re drawing to
- Flush draw9 outs
- Backdoor straight draw0.93%
10 of the 1081 turn-and-river combinations make a straight.
- Two overcards6 outs
Pairing an overcard makes top pair, which is not always the best hand.
Shortcut vs. exact
| Cards to come | Rule of 2/4 | Exact | Gap |
|---|---|---|---|
| Turn only | 30% | 31.91% | −1.91 pts |
| Turn and river | 60% | 54.12% | +5.88 pts |
Outs, and the two-and-four rule
An out is an unseen card that improves your hand. On the flop you have seen five cards, so 47 are unseen; on the turn, 46. The chance the next card is one of your outs is simply outs ÷ unseen.
With two cards to come it is easier to count the ways to miss twice: 1 − C(47 − outs, 2) ÷ C(47, 2). For a flush draw that is 1 − 703 ÷ 1081 = 34.97%.
The Rule of 2 and 4 multiplies outs by 2 for one card to come and by 4 for two. It is close up to about 12 outs and starts to overshoot beyond that. The table shows exactly how far.
Not every out is clean. Turn on the advanced mode above and give the opponent a hand: some of your “outs” also improve them, and the explorer shows how often each one actually holds up.
Outs table — flop and turn
| Outs | Flop → turn | Rule of 2 | Flop → river | Rule of 4 | Turn → river |
|---|---|---|---|---|---|
| 1 | 2.13% | 2% | 4.26% | 4% | 2.17% |
| 2 | 4.26% | 4% | 8.42% | 8% | 4.35% |
| 3 | 6.38% | 6% | 12.49% | 12% | 6.52% |
| 4 | 8.51% | 8% | 16.47% | 16% | 8.70% |
| 5 | 10.64% | 10% | 20.35% | 20% | 10.87% |
| 6 | 12.77% | 12% | 24.14% | 24% | 13.04% |
| 7 | 14.89% | 14% | 27.84% | 28% | 15.22% |
| 8 | 17.02% | 16% | 31.45% | 32% | 17.39% |
| 9 | 19.15% | 18% | 34.97% | 36% | 19.57% |
| 10 | 21.28% | 20% | 38.39% | 40% | 21.74% |
| 11 | 23.40% | 22% | 41.72% | 44% | 23.91% |
| 12 | 25.53% | 24% | 44.96% | 48% | 26.09% |
| 13 | 27.66% | 26% | 48.10% | 52% | 28.26% |
| 14 | 29.79% | 28% | 51.16% | 56% | 30.43% |
| 15 | 31.91% | 30% | 54.12% | 60% | 32.61% |
| 16 | 34.04% | 32% | 56.98% | 64% | 34.78% |
| 17 | 36.17% | 34% | 59.76% | 68% | 36.96% |
| 18 | 38.30% | 36% | 62.44% | 72% | 39.13% |
| 19 | 40.43% | 38% | 65.03% | 76% | 41.30% |
| 20 | 42.55% | 40% | 67.53% | 80% | 43.48% |