tools
Outs calculator.
Your outs are the cards that win you the hand. This turns that count into the exact chance of one arriving, and puts the rule of 2 and 4 next to it so you can see how far the shortcut is off for your particular draw. Sometimes half a point. Sometimes six.
the calculator
common draws
outs that might arrive and still lose, counted at half
Cards still to come
Two only applies when no more money can go in. If another bet is coming, you are paying for one card.
Chance of hitting
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The rule of 2 and 4 says
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Largest bet you can call
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the same numbers, spelled out
A flush draw with one card to come is in the fields, because it is the spot people misprice most often. Change a number, or press the button.
counting them
Every draw, and the sum behind it.
Nobody memorises out counts, they derive them. Thirteen cards share your suit and four of them are already visible, so a flush draw is nine. Two ranks complete an open ender and there are four of each, so eight. The right hand column is where each number comes from, which is more useful than the number itself.
| Draw | Outs | Where it comes from |
|---|---|---|
| Gutshot straight draw | 4 | one rank fills it, 4 cards of that rank |
| Two overcards | 6 | 2 ranks x 3 cards left of each |
| Open ended straight draw | 8 | 2 ranks x 4 cards of each |
| Flush draw | 9 | 13 of your suit minus the 4 you can see |
| Flush draw and a gutshot | 12 | 9 + 4, minus 1 card counted twice |
| Open ender and a pair, hoping for trips or the straight | 10 | 8 + 2 |
| Flush draw and an open ender | 15 | 9 + 8, minus 2 counted twice |
| Pocket pair chasing a set | 2 | 4 of your rank minus the 2 you hold |
an out that is not an out
You hold on a board of . Nine hearts make your flush, so nine outs. Now the turn pairs the board: . Two of your nine hearts now also pair the board for someone holding a nine, and a heart that fills a full house for your opponent wins you nothing. Those outs have not disappeared, they have become worth less than a whole one, which is what the unreliable field on this page is for.
every out count, and the shortcut beside it
Both shortcut columns are what a player at the table would say out loud. With one card to come the doubling always reads low. With two cards it starts a fraction low, crosses over at 9 outs and then runs away, reaching 14.1 points at 21 outs. That is the number worth remembering: the shortcut is least trustworthy on the biggest draws, which are exactly the hands you go broke with.
| Outs | Next card | Outs x 2 | Off by | Both cards | Outs x 4 | Off by |
|---|---|---|---|---|---|---|
| 1 | 2.2% | 2% | -0.2 | 4.3% | 4% | -0.3 |
| 2 | 4.3% | 4% | -0.3 | 8.4% | 8% | -0.4 |
| 3 | 6.5% | 6% | -0.5 | 12.5% | 12% | -0.5 |
| 4 | 8.7% | 8% | -0.7 | 16.5% | 16% | -0.5 |
| 5 | 10.9% | 10% | -0.9 | 20.4% | 20% | -0.4 |
| 6 | 13.0% | 12% | -1.0 | 24.1% | 24% | -0.1 |
| 7 | 15.2% | 14% | -1.2 | 27.8% | 28% | + 0.2 |
| 8 | 17.4% | 16% | -1.4 | 31.5% | 32% | + 0.5 |
| 9 | 19.6% | 18% | -1.6 | 35.0% | 36% | + 1.0 |
| 10 | 21.7% | 20% | -1.7 | 38.4% | 40% | + 1.6 |
| 11 | 23.9% | 22% | -1.9 | 41.7% | 44% | + 2.3 |
| 12 | 26.1% | 24% | -2.1 | 45.0% | 48% | + 3.0 |
| 13 | 28.3% | 26% | -2.3 | 48.1% | 52% | + 3.9 |
| 14 | 30.4% | 28% | -2.4 | 51.2% | 56% | + 4.8 |
| 15 | 32.6% | 30% | -2.6 | 54.1% | 60% | + 5.9 |
| 16 | 34.8% | 32% | -2.8 | 57.0% | 64% | + 7.0 |
| 17 | 37.0% | 34% | -3.0 | 59.8% | 68% | + 8.2 |
| 18 | 39.1% | 36% | -3.1 | 62.4% | 72% | + 9.6 |
| 19 | 41.3% | 38% | -3.3 | 65.0% | 76% | + 11.0 |
| 20 | 43.5% | 40% | -3.5 | 67.5% | 80% | + 12.5 |
| 21 | 45.7% | 42% | -3.7 | 69.9% | 84% | + 14.1 |
every row worked out when this page was built, from 46 and 47 unseen cards
what to do with the number
A chance on its own decides nothing. It becomes a decision when you hold it against the price you are being asked to pay, which is why the third box on this page turns your equity into the largest bet you can still call. The pot odds calculator does the same comparison from the other direction, starting with the bet and telling you the equity it demands.
Counting outs correctly depends on knowing what actually wins. A card that improves your hand without beating your opponent is not an out, and that judgement rests on which hands beat which. It is the most common way an out count goes wrong, and it always goes wrong in the expensive direction.
If you want the standing figures rather than one spot, the probability tables count every flop for a set of example hands, and the hand odds page counts how rare each finished hand is. Between them they cover the questions this calculator answers one at a time.
One last honesty note. Everything here assumes the hand ends after the cards you selected arrive. It does not, and the money that goes in later is a real part of what a draw is worth. It also does not know what your opponent holds, and the rules for how the betting gets to this point are in the Texas Hold'em rules.
next
Outs are worthless without a price.
You now know how often the card comes. The other half is what you are being charged for it, and that is one short division you can do at the table every time.
questions about outs
How do you count outs in poker?
Count the cards still in the deck that give you the best hand, and only those. Nine for a flush draw, because thirteen cards share your suit and you can already see four of them. Eight for an open ended straight draw, two ranks with four cards each. The mistake that costs money is counting cards that improve you without making you the winner: a king when your opponent has a flush is not an out.
How accurate is the rule of 2 and 4?
Good enough for small draws and misleading for big ones. With one card to come, multiplying by two reads low every time, at worst by 3.7 points at 21 outs. With two cards, multiplying by four reads high and the gap grows: it passes one point at 9 outs and reaches 14.1 points at 21. The calculator on this page shows both so you can see the drift for your own number.
How many outs do I need to call?
That depends on the price, not on the outs alone. Against a half pot bet you need 25 percent equity, which is seven outs with two cards to come. Against a pot sized bet you need 33.3 percent, which is nine outs with two cards to come and more than fifteen with one card. This calculator turns your outs into the largest bet you can still call.
Should I use two cards to come or one?
One, almost always. The four times figure only applies when no more money can go in, which means one of you is already all in. If there is another round of betting coming, you are paying the current price for a single card, and your opponent gets to charge you again on the turn. Using the two card number in a spot where more betting is coming is the most expensive habit in this whole subject.
What are discounted outs?
Outs that might not win even when they arrive. A flush card that pairs the board can give someone a full house; a straight card that puts three to a flush out there can complete a better hand. The honest way to handle them is to count them as fractions rather than pretend they are clean, and this calculator lets you mark some of your outs as unreliable and shows both answers.
Do outs work the same on the turn?
The counting does, the arithmetic changes. On the turn there are 46 unseen cards and only one is coming, so nine outs give 19.6 percent instead of the 35.0 percent you had on the flop with both cards to come. The same draw is worth roughly half as much, which is why a call that was easy on the flop can be a fold on the turn against the same size bet.
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