Poker Outs Calculator: Clean & Dirty Odds
Select your cards and board, remove dirty or duplicate outs, and compare exact turn and river probabilities with the Rule of 2 and 4.
Poker outs calculator quick answer
Poker outs are unseen cards that may improve your hand to a winner. A flush draw usually has 9 candidate outs, an open-ended straight draw has 8, a gutshot has 4, and two overcards have up to 6. Remove duplicate and dirty cards before converting the clean count into a probability.
- Flush draw: 9 clean outs are exactly 35.0% to hit by the river from the flop.
- Open-ended straight draw: 8 clean outs are 31.5% to hit by the river.
- Gutshot straight draw: 4 clean outs are 16.5% to hit by the river.
- Flush draw plus open-ended straight draw: often 15 outs after duplicate cards are removed.
- Use the clean/dirty card controls to remove outs that may complete a better hand for an opponent.
Count the cards first, then decide which ones are really clean
You are holding 8-7 of hearts and the flop comes K-6-5 with two hearts. What do you have? Most players see the flush draw immediately because the hearts are visible. Fewer notice the open-ended straight draw (any 4 or 9 makes the straight). Even fewer put both together and realize they have 15 outs to improve, making them a slight favorite against most one-pair hands with two cards to come.
Counting outs is not hard when you know what you are looking for. The problem is that under pressure, with a clock ticking and money in the pot, people default to seeing the most obvious draw and missing the rest. The tool above does the counting for you, but the point is not to use it at the table. The point is to train yourself to see all the draws at once by doing it slowly and deliberately, again and again, until the pattern recognition kicks in.
The difference between 9 outs and 15 outs changes the price you need. Nine clean outs are 19.1% on the next card and 35.0% by the river when both cards are guaranteed. Fifteen clean outs are 31.9% on the next card and 54.1% by the river. A flop call usually buys only the turn, so do not use the two-card number when another bet can arrive before the river.
Overcards are easy to overcount. If you have A-Q and the flop comes 9-7-3, six unseen aces and queens can pair your hand. They are candidate outs, not automatically clean ones. Against a set, two pair, or a range that keeps dominating top-pair hands, pairing an overcard may still lose. Start with six, then remove the cards that do not beat the range you are actually facing.
Dirty outs are the other side of the count. A flush card that pairs the board can fill up a set. A straight card that adds a third card of one suit can complete an opponent's flush. The detector cannot know an opponent's range, so it starts with candidate cards. Use the clean/dirty controls to make the judgment yourself instead of accepting a falsely precise total.
A useful study drill is to load hands from your last session, mark the cards you would distrust against the range you faced, and compare the percentage before and after the adjustment. The gap shows how much an optimistic out count can distort a close call. It also forces you to name the specific cards you are relying on rather than guessing from the draw label.
Board texture changes the answer. J-T-8 with two spades has straight and flush possibilities in several ranges. Counting your own draw is only the first step. The calculator handles duplicate cards and exact deck removal; deciding whether each card is clean still depends on the action, the board, and what the opponent can plausibly hold.
Common poker outs chart
Start with these clean-out counts before using the calculator for exact card removal. Discount any out that also completes a better hand for an opponent.
| Draw or hand | Clean outs | Flop to river | Turn to river | What to check before calling |
|---|---|---|---|---|
| Gutshot straight draw | 4 | 16.5% | 8.7% | Make sure the straight card does not complete a flush. |
| Two overcards | 6 | 24.1% | 13.0% | Count them only when top pair is likely to win. |
| Open-ended straight draw | 8 | 31.5% | 17.4% | Watch for paired boards and flush cards. |
| Flush draw | 9 | 35.0% | 19.6% | Do not treat low flush draws as nut outs. |
| Pair plus flush draw | 12 | 45.0% | 26.1% | Pair outs may be dirty against two pair or sets. |
| Flush plus open-ended straight draw | 15 | 54.1% | 32.6% | Remove duplicate straight-flush cards once. |
Outs to pot odds shortcut
Use this as the fast call/fold check. If the pot price is worse than the break-even line, you need implied odds or fold equity to continue.
| Outs | Approx equity by river | Break-even pot odds |
|---|---|---|
| 4 outs | About 16% | Better than 5.1-to-1 |
| 6 outs | About 24% | Better than 3.1-to-1 |
| 8 outs | About 32% | Better than 2.2-to-1 |
| 9 outs | About 36% | Better than 1.9-to-1 |
| 12 outs | About 48% | Better than 1.1-to-1 |
| 15 outs | About 54% | You are often near a favorite |
Sources and methodology
- PokerStars Learn: How to Calculate Outs: Defines poker outs, the 47 unseen cards after the flop, common draw counts, and the Rule of 4 and 2.
- PokerStars Learn: Miscalculating Outs: Explains why cards that improve a hand are not always clean and why uncertain outs should be discounted.
- PokerStars Learn: Poker Tips - Outs and Odds: Shows the difference between next-card equity and the chance of completing a draw when both turn and river are seen.
Outs Calculator questions
How do you count outs in poker?
Start with the cards that complete your draw, remove cards you can already see, count each matching card once, then discount dirty outs that could also make your opponent a better hand. Use the practice hands above if you want a quick way to test the count before entering your own cards.
How many outs does a flush draw have?
A flush draw usually has 9 outs. There are 13 cards in each suit, and when you hold two suited cards with two more on the flop, 4 are visible and 9 remain unseen.
What is the rule of 2 and 4 for poker outs?
The rule of 2 and 4 is a table shortcut. On the flop, multiply your clean outs by 4 to estimate your chance of improving by the river. On the turn, multiply your outs by 2 to estimate your chance of hitting the river.
Should overcards count as poker outs?
Overcards can count as outs when pairing them is likely to win the hand. They should be discounted on coordinated boards, against tight value ranges, or when pairing one overcard could still leave you behind.
What are dirty outs in poker?
Dirty outs improve your hand but may still leave you behind. A flush card that pairs the board can be dirty against a set, while an overcard can be dirty when an opponent already has two pair. Mark those cards dirty in the calculator to remove them from the exact percentage.
Why does the exact percentage differ from the Rule of 2 and 4?
The Rule of 2 and 4 is a fast estimate. Exact odds use 47 unseen cards after the flop and 46 after the turn, then account for missing the turn before the river is dealt. The shortcut is close in common spots but drifts as the out count rises.
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