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Pot odds are the price a call offers you: the size of the pot compared with the amount you have to call. To use them, divide the call by the total pot after your call (call ÷ (pot + call)); the result is the minimum share of the time your hand must win for the call to break even. If the pot is 150 chips and you have to call 50, the pot odds are 3 to 1 and you need to win at least 25% of the time. [2]
| What they measure | The price of a call compared with what you can win |
|---|---|
| As a ratio | Pot (including the bet you face) to the call |
| As a percentage | Call ÷ (pot + call) = equity you need to break even |
| Example | Call 50 into a pot of 150: 3 to 1, or 25% |
| Compare them with | Your equity: the chance your hand wins at showdown |
| Quick equity estimate | Outs × 4 with two cards to come, outs × 2 with one [2] |
How to calculate pot odds
You need two numbers: the pot when it is your turn, including your opponent’s bet, and the cost of your call. Pot odds can be written two ways:
- As a ratio. Put the pot against the call and simplify. The pot is 100, your opponent bets 50, so there are 150 in the middle and you must call 50: 150 to 50, or 3 to 1.
- As a percentage. Divide the call by the pot it creates. After your call the pot will be 200, so 50 ÷ 200 = 25%. That is the equity you need: a hand that wins more than 25% of the time makes money on this call in the long run.
To turn a ratio into a percentage, add the two sides and divide 1 by the total: 3 to 1 becomes 1 ÷ (3 + 1) = 25%. To go the other way, subtract the numerator from the denominator: 25% is 1/4, and 4 − 1 = 3, so 3 to 1. [2] The percentage is easier to compare with equity, which is why the tables below use it.
Comparing pot odds with your equity
Pot odds only tell you the price. The decision comes from comparing that price with your equity, the chance that your hand wins the pot. If your equity is higher than the percentage the pot odds require, calling wins money over time; if it is lower, calling loses money unless something else, such as future bets, makes up the difference. [2]
Counting your outs
When you are behind and drawing, your equity comes from your outs: the unseen cards that improve your hand to one that is likely to win. [3] If you hold A♥️ 7♥️ on a flop of K♥️ 9♥️ 2♣️, there are 13 hearts in the deck and you can see four, so nine hearts complete your flush. In Texas Hold’em you can see 5 cards on the flop (your two plus three on the board), which leaves 47 unseen cards; on the turn there are 46.
With one card to come, the chance of hitting is simply outs ÷ unseen cards: 9 ÷ 47 = 19.1% on the turn, or 9 ÷ 46 = 19.6% on the river. With two cards to come, the exact chance of hitting on the turn or the river with nine outs is 35.0%. [1] You can then put a number on the call itself. Its expected value is your equity times what you win, minus the rest of the time times what you lose. Facing a 50 bet into 100 with that flush draw and counting only the next card: 9/47 × 150 − 38/47 × 50 is about −11.7 chips per call. [1]
The rule of 4 and 2, and how accurate it is
Nobody works out 1 − (38/47 × 37/46) at the table. The rule of 4 and 2 is the usual shortcut: on the flop, multiply your outs by 4 to estimate your chance of hitting by the river; with one card to come, multiply by 2. [2] It is close for small draws and drifts as the number of outs grows:
- Rule of 4. For 4 outs it gives 16% against an exact 16.5%; for 9 outs, 36% against 35.0%. For bigger draws it overestimates: 12 outs give 48% against 45.0%, and 15 outs give 60% against 54.1%, almost 6 points too high. [1]
- Rule of 2. It always slightly underestimates: 9 outs give 18% against 19.1% on the turn and 19.6% on the river. A common refinement is to double the outs and add one, which gives 19% for a flush draw. [1][3]
The rule of 4 also assumes you will see both the turn and the river for the price of this one call. That is only certain when you or your opponent is all-in. Facing a bet on the flop with chips still behind, use the one-card numbers (see the mistakes section below).
Outs and odds for common draws
These are the exact chances of hitting in Texas Hold’em, calculated from the number of unseen cards. [1] They assume all of your outs are live and that hitting one wins the pot.
| Draw | Outs | Turn | River | Turn or river |
|---|---|---|---|---|
| Gutshot straight draw | 4 | 8.5% | 8.7% | 16.5% |
| Two overcards | 6 | 12.8% | 13.0% | 24.1% |
| Open-ended straight draw | 8 | 17.0% | 17.4% | 31.5% |
| Flush draw | 9 | 19.1% | 19.6% | 35.0% |
| Flush draw + gutshot | 12 | 25.5% | 26.1% | 45.0% |
| Open-ended + flush draw | 15 | 31.9% | 32.6% | 54.1% |
As odds against, a flush draw is 4.2 to 1 on the next card from the flop and 1.9 to 1 over two cards; an open-ended straight draw is 4.9 to 1 and 2.2 to 1; a gutshot is 10.8 to 1 and 5.1 to 1. [1] Two overcards only count as six outs if pairing either card would give you the best hand, which is often not the case.
Bet size and the equity you need
Because pot odds depend only on the size of the bet relative to the pot, each common bet size always asks for the same equity. The required equity is bet ÷ (pot + 2 × bet), where “pot” is the pot before the bet. [1]
| Bet size | Into a pot of 100 | Pot odds | Equity needed |
|---|---|---|---|
| 1/4 pot | 25 | 5 to 1 | 16.7% |
| 1/3 pot | 33 | 4 to 1 | 20.0% |
| 1/2 pot | 50 | 3 to 1 | 25.0% |
| 2/3 pot | 67 | 2.5 to 1 | 28.6% |
| 3/4 pot | 75 | 2.33 to 1 | 30.0% |
| Pot | 100 | 2 to 1 | 33.3% |
| 1.5 × pot | 150 | 1.67 to 1 | 37.5% |
| 2 × pot | 200 | 1.5 to 1 | 40.0% |
Even a pot-sized bet only needs you to win one time in three. Put the two tables side by side and you can see why small bets let draws continue cheaply: against a 1/3 pot bet you need 20%, and a flush draw has 19.1% with one card to come.
Three worked examples
1. A draw on the flop facing a bet
The pot on the flop is 100 and your opponent bets 50. You must call 50 to win 150: pot odds of 3 to 1, so you need 25% equity. Your opponent has chips behind and can bet again on the turn, so count only the next card.
- A♥️ 7♥️ on K♥️ 9♥️ 2♣️ (flush draw, 9 outs). Your chance on the turn is 19.1%, below the 25% you need. On pot odds alone this is a fold. A call needs implied odds, covered below. [1]
- J♥️ 10♥️ on 9♥️ 8♣️ 2♥️ (open-ended straight and flush draw, 15 outs). Nine hearts plus the six queens and sevens that are not hearts. Your chance on the turn is 31.9%, above 25%, so the call is profitable even if the hand ended on the turn: about +13.8 chips per call on average. [1]
2. Calling a bet on the river
On the river there are no more cards, so your equity is simply how often your opponent is bluffing or betting a hand you beat. The pot is 150 and your opponent bets 100 (two thirds of the pot). You call 100 to win 250: pot odds of 2.5 to 1, so you need to win 100 ÷ 350 = 28.6% of the time, or 2 times in 7. [1]
You do not need to be sure your opponent is bluffing, only that they hold a hand you beat more than 2 times out of 7. If they bluff often enough, the call is profitable even though you lose most of the times you make it.
3. An all-in on the flop
You hold the same A♥️ 7♥️ on K♥️ 9♥️ 2♣️. The pot is 200 and your opponent moves all-in for 150, which also puts you all-in if you call. You call 150 to win 350: pot odds of 2.33 to 1, so you need 150 ÷ 500 = 30%. [1]
This time there is no more betting, so you will see both the turn and the river, and the two-card number applies: 35.0% with nine clean outs. That is above 30%, and the call is worth about +24.8 chips on average, counting only the flush as a way to win. [1] Compare this with example 1: the same draw is a fold against a half-pot bet with more betting to come, and a call against a larger all-in.
Implied odds and reverse implied odds
Implied odds add the money you expect to win on later streets when you make your hand. [2] In example 1, the flush draw needs 25% but has 19.1%. You can work out how much extra it needs: to break even with 9 outs, a call of 50 must win 50 × 38 ÷ 9 = about 211 when it hits. The pot already holds 150, so you need to win about 61 more on average from later bets when the flush comes in. [1] Whether that is realistic depends on the stacks and on your opponent: a flush on a board with three hearts is easy to see.
Reverse implied odds are the opposite: the money you can lose after you hit, or when you hold a hand that wins small and loses big. [2] Drawing to a low flush when a higher flush is possible, or calling with a medium pair that will face more bets only when it is beaten, are typical cases. There is no fixed number for either kind of implied odds; they are estimates about how a hand will play out, and the pot odds calculation is the part you can be sure of.
Common mistakes with pot odds
- Counting tainted outs. An out that also improves your opponent to a better hand is not an out. A flush card that pairs the board can give a set a full house, and a card that completes your straight can complete someone else’s flush. [3] In example 3, if two of your nine outs were tainted, your equity would drop from 35.0% to 27.8%, below the 30% you need, and the call would become a fold. [1]
- Using the turn and river number when facing a bet. If your opponent can bet again on the turn, you are paying for one card, not two. A flush draw has 35.0% to hit by the river, but only 19.1% on the next card. [1]
- Forgetting that an all-in sees both cards. The opposite error: when there is no more betting, the one-card number understates your equity, and you may fold a profitable call, as example 3 shows.
- Adding your own call to the ratio. The ratio is the pot (with your opponent’s bet) against your call: 150 to 50 is 3 to 1, not 200 to 50. Your call only goes into the total when you work out the percentage (50 ÷ 200).
- Relying on the rule of 4 with big draws. With 15 outs it says 60%, while the exact figure is 54.1%. [1] For a close decision, use the table.
Frequently asked questions
What are good pot odds?
There is no number that is good on its own. Pot odds are good when your equity is higher than the equity they require. A half-pot bet asks for 25%: good odds for an open-ended straight and flush draw (31.9% on the next card), poor odds for a gutshot (8.5%). [1]
What is the difference between pot odds and implied odds?
Pot odds use only the money in the pot now and the cost of the call. Implied odds also include the money you expect to win on later betting rounds if you make your hand, so they rely on an estimate rather than on the chips you can see. [2]
How do you convert pot odds into a percentage?
Add both sides of the ratio and divide the smaller side by the total. Pot odds of 4 to 1 become 1 ÷ 5 = 20%, and 2 to 1 becomes 1 ÷ 3 = 33.3%. [2]
How accurate is the rule of 4 and 2?
It is within about one percentage point for draws of up to nine outs, which covers most flush and straight draws. With more outs the rule of 4 overestimates: 48% against an exact 45.0% with 12 outs, and 60% against 54.1% with 15. The rule of 2 always comes out slightly low. [1]
Do pot odds work the same way in Omaha?
The formula is the same. The number of unseen cards changes, because you hold four hole cards: on the flop you can see seven cards, which leaves 45 unseen. Outs in Omaha are also tainted more often, since every opponent holds four cards and strong draws are common. Our guide to Pot Limit Omaha explains the game.
Should you call every time the pot odds are right?
Pot odds tell you whether calling beats folding. They do not consider raising, which is sometimes the stronger play with a big draw, and they are only as good as your estimate of your equity. In tournaments, chips won and chips lost do not always have the same value, especially near the prize places, so the pot odds price is a starting point there.
Keep learning
- Poker basic rules and gameplay: blinds, betting rounds and your options in each turn.
- Poker hand rankings, with the odds of making each hand.
- How to play Texas Hold’em, step by step.
- Poker strategy guide.
- Poker terms and slang, from “outs” to “gutshot”.
Sources
- World Poker Federation, exact calculation of drawing odds and break-even equity for Texas Hold’em (outs over 47 and 46 unseen cards, and all two-card combinations from 47), October 9, 2026.
- Wikipedia, Pot odds, accessed October 9, 2026.
- Wikipedia, Out (poker), accessed October 9, 2026.
Written by the WPF Editorial Team with the help of AI tools, then checked and edited by our team. Odds were calculated by the WPF and compared with published references. Last verified: October 9, 2026. Poker should be played for fun and within your means; you must be of legal age in your country to play for money.
