Poker Odds and Outs: Pot Odds Explained Simply

Outs are the unseen cards that would turn your hand into a likely winner, and poker odds tell you how often one of them will arrive. Pot odds compare the price of a call with the size of the pot. If your chance of hitting is higher than the share of the final pot you are asked to pay, the call makes sense. For example, calling £20 into a pot that will be £100 after your call needs 20% equity.

What are outs in poker?

An out is any card still in the deck that completes your draw. Say you hold A♥ 7♥ and the flop is K♥ 9♥ 2♣. There are thirteen hearts in the deck and you can see four of them, so nine remain. You have nine outs to a flush.

After the flop you know five cards, your two and the three on the board, which leaves 47 unseen. The chance of a heart on the turn is 9 in 47, or 19.1%. To count outs accurately you need to know which hands beat which, so keep our poker hand rankings guide to hand if you are unsure.

Common draws and how often they hit

The table shows the most common drawing hands on the flop in Texas Hold'em. The final column assumes you see both the turn and the river.

An open-ended straight draw is four cards in a row, such as 9-8-7-6, which can be completed at either end. A gutshot needs one specific rank in the middle, such as 9-8-6-5 needing a seven, so it has half as many outs.

The rule of 2 and 4

You do not need to memorise the table. The rule of 2 and 4 gives a quick estimate at the table.

• On the flop, with two cards to come: multiply your outs by 4.
• On the turn, with one card to come: multiply your outs by 2.

A flush draw has nine outs, so the rule gives 36% on the flop against a true figure of about 35%, and 18% on the turn against a true 19.6%. The estimate is close enough for most decisions. It drifts when you have a lot of outs: fifteen outs gives 60% by the rule, while the real figure is about 54%.

One caution matters more than the rounding. The times-four figure only applies if you will see both cards for a single price, for instance when you or your opponent is all-in on the flop. If you are facing a bet on the flop and may have to pay again on the turn, use times two for the next card alone.

Pot odds: the price of a call

Pot odds turn the size of a bet into the percentage of the time you need to win. The sum is simple.

1. Add up the pot, including your opponent's bet.
2. Add the amount you must call. This is the final pot.
3. Divide your call by the final pot.

If the answer is lower than your chance of making the winning hand, calling is the right play in the long run. If it is higher, folding is usually better. Some players prefer ratios: £20 to win £80 is 4 to 1, which is the same as needing to win one time in five.

Example 1: a call

You are on the turn and the pot is £60. Your opponent bets £20, making it £80. You must call £20, and the pot will be £100 after your call, so you need 20% equity. You hold a flush draw plus a gutshot, which is twelve outs. With 46 unseen cards, your chance on the river is 12 in 46, or about 26%. That is more than 20%, so calling is correct.

Example 2: a fold

You are on the turn again and the pot is £50. Your opponent bets £50, making it £100. Calling £50 creates a final pot of £150, so you need 33.3% equity. This time you have only a flush draw: nine outs, or about 19.6%. That is well short of 33.3%, so on pot odds alone this is a fold.

Implied odds

Pot odds only count the money already in the middle. Implied odds also count what you expect to win on later betting rounds when your draw comes in. In Example 2, the call would only break even if you could win more than a further £100 from your opponent, on average, each time the flush arrives. That is rarely realistic, so the fold stands.

Implied odds are best when your hand is well hidden and both players have plenty of chips left. A small pocket pair is the classic case. It flops three of a kind only about 11.8% of the time, roughly 1 in 8.5, yet the hand is so well disguised that it can win a large pot when it hits. Our Texas Hold'em starting hands guide covers when small pairs are worth playing.

Implied odds are poor when your opponent has few chips left, or when the draw is obvious, such as a fourth card of one suit landing on the board. They also improve when you act last, because you see what your opponent does before you decide. Our guide to poker positions explains why.

Common mistakes when counting outs

• Counting tainted outs. Some cards complete your hand but give an opponent a better one. If you hold J♠ 10♦ on a flop of 9♥ 8♥ 2♣, you have eight cards to a straight, but the Q♥ and 7♥ could complete a heart flush for someone else. Count six clean outs, not eight.
• Counting the same card twice. A flush draw has nine outs and an open-ended straight draw has eight, but together they make fifteen, not seventeen, because two cards complete both.
• Treating overcards as certain winners. Pairing an ace does not help if your opponent already has two pair or three of a kind.
• Using the rule of 4 when more bets are coming. This makes draws look cheaper than they are.
• Forgetting the hand may already be lost. A low flush draw can complete and still lose to a higher flush.
• Expecting the odds to even out quickly. A 35% draw will miss several times in a row quite often. Sensible stakes help you cope with those swings, as our poker bankroll management guide explains.

Where to practise

Counting outs becomes automatic with repetition, and play-money or low-stakes tables are a good place to rehearse. You can find suitable rooms in our comparison of the best UK poker sites.

Play responsibly

Poker is for adults aged 18+ only. Understanding the odds improves your decisions but does not guarantee wins, and short-term results depend heavily on luck. Set a budget you can afford to lose, stick to it, and visit BeGambleAware.org for free, confidential advice.