What Are Pot Odds

In poker there are good bets and bad bets – the game is simply a way of determining who can tell the difference. This is where the concept of pot odds comes into play. Put simply, pot odds means is there enough in the pot to call a bet.

1. Pot Odds Example
2. What Are Pot Odds
3. What Are Pot Odds
4. Poker Pot Odds Calc

Put simply, pot odds means is there enough in the pot to call a bet. The fundamental principle of playing a drawing hand in poker is that you need a pot big enough to call. When we have a flush draw or a straight draw we will make our hand on the next card almost 20%. Pot odds Pot odds are defined as the ratio between the size of the pot and the bet facing you. For example, if there is $4 in the pot and your opponent bets $1, you are being asked to pay one-fifth of the pot in order to have a chance of winning it. A call of $1 to win $5 represents pot odds of 5:1. Pot Odds The Total Pot is now 75 cents and our Pot odds are 75 divided by 25 = 3 to 1. This makes our Break Even percentage = 100% divided by 4 = 25%. Decision So now we have the situation where our probability of winning is less than the break even percentage and so at this point we would fold, even though it is a close call.

The fundamental principle of playing a drawing hand in poker is that you need a pot big enough to call. When we have a flush draw or a straight draw we will make our hand on the next card almost 20% of the time (19% for flush and 17% for the straight draw). That is, 20% of the time we will make our desired hand and 80% we won’t. The ratio 20 to 80 can be expressed as odds of 4-to-1. Therefore, if the pot is $80 we can almost call a $20 bet to break-even. I say almost because we have to make a profit so, a call of $20 is appropriate when there is more than $80 in the pot.

A poker odds calculator is a piece of poker software that lets you run any scenario that you might see at a poker table. You can fill in your own hand and calculate the chances of you winning. In poker, pot odds are the ratio between the size of the pot, including bets made in the current round, and the cost of a call to try to win the pot. For example, if there are 10$ in the pot, and your opponent bets 5$, you need to pay 5$ to potentially win 15$. Therefore, your pot odds are 3 to 1.

Know the Odds

You should already know how to calculate odds based upon the number of “outs”. If you don’t know the odds of hitting certain common draws then please go back and study our previous lesson on calculating odds and outs in poker. For the benefit of this lesson we’ll include the handy chart below:

Table: Odds and outs from the flop and the turn to the river:

We have created a printable PDF version of the poker drawing odds chart (opens in a new window). You will need Adobe Acrobat on your computer to view it on screen. We recommend you print the chart and be sure to memorize these odds, particularly the common draws – as your time is better spent analyzing your opponents’ play rather than attempting to perform mathematical calculations in your head.

Track the Pot Size

Part of the concept of pot odds is to focus on the calculation of how to figure the odds of your hand becoming a winner. The other part of the equation is to know how much is actually in the pot in order to know what odds it is offering you.

If you’re playing poker online then the size of the pot should be in clear view at all times – simple! If you’re playing poker live then it’s as easy as paying attention and using basic arithmetic to know the pot size at every step of the way. All one needs to do is multiply the total amount bet on each street by the number of active players and add that sum to the blinds if they are not participating in the hand. Hold that total in your head and add the subsequent total of the next street’s betting and you will always have the pot total available to calculate your pot odds. Here are some critical words of advice: know what is in the pot at all times. How else can you make proper mathematical decisions?

Calculating the Pot Odds

At this stage you should know the odds of hitting your card(s) and the size of the pot. The next step is to know what odds the pot is offering you. The best way to teach you is to use an example hand. Take a look at figure 1, below:

Figure 1

As you can see, we have 9 outs for the nut flush draw, so the odds of hitting our flush on the river are roughly 20% or 4-to-1 odds. There is $450 in the pot, and player 2 bets $150, which now makes the total pot $600. It’s going to cost us $150 to win $600. How do we calculate these figures to give us the pot odds? This is fairly simple as 600/150 = 4, so we have 4-to-1 odds for our money.

If we want to know the percentage then we add the bet (call amount) to the pot, to give us a total pot figure. In this example it would be: 150 + 600 = 750. Once we have this figure then we would have to perform the following formula: call amount / the total pot size. In our example this would be 150 / 750 = 0.2, or 20%.

Now we know the pot odds, should we call or not? In our example we can justify the call as we’re getting 4-to-1 pot odds and our odds of hitting and winning is also 4-to-1. But remember it’s a break-even call over the long term if we’re only counting the flush draw. Ideally we’d want the pot to be a little bigger or their bet to be a little smaller. However, if we believe that hitting either an Ace of King (giving us 6 additional outs) on the river would beat our opponent then we’d have more than enough odds to call the bet.

In poker, whenever the pot odds exceed the odds against making your hand, it pays to keep playing. When the odds against your hand coming in exceed the reward associated with it, it’s usually a bad deal. A simple way to think about this is as follows:

• When the prize exceeds the cost, you should call.
• If the cost is more than the money you figure to win, fold.

…did you know that AK flops a flush draw 11% of the time?

The new book Optimizing Ace King has a complete chapter on playing draws (along with chapters on playing pairs, turn & river play, and even ideal lines when AK totally misses the board).

As a bonus for being a Pokerology reader, use code POKEROLOGY at checkout to save $5 when you pick up your copy.

Let’s look at another example:

Figure 2

Here we have a straight and a flush draw, meaning we have 15 possible outs. The odds of hitting one of our outs on the turn is 31.9% or 2.13-to-1. The pot contains $36 ($24 + $12) and it’ll cost us $12 to call.

Are we getting enough pot odds to call? Let’s do the figures, first in odds…..$36 (total pot) / $12 (cost to call) = 3. Expressed as a ratio this would be 3-to-1 odds, meaning we’ll win once every 4 times. In percentage terms… the pot odds can be expressed as 25%. Our drawing odds are 31.9%. Since the pot is offering us better odds than our draw, we should call the $12 bet.

Let’s continue with this hand example. As you can see in figure 3, we didn’t hit on the turn, we check and our opponent then bets $60 into the existing $48 in the pot.

Figure 3

Are we still getting the correct pot odds to call in the hopes of hitting a straight or flush? The answer is no.

The pot odds are now 1.8-to-1 (108 / 60) or 35.7% in percentage terms. Our drawing odds are 2.07-to-1 or 32.6%. Since the pot odds are less than the odds of hitting, in this instance we should fold. To call a bet here we’d need the pot to be a little bigger or our opponents bet to be a little lower. He has priced us out with his overbet.

So, that old feeling we had, “There is a bunch of money in the pot, I call”, was and is a sound tactic. Now we know more precisely when it is profitable and when it is not profitable to go in on draws. Knowing pot odds does two things; it lets us concentrate on the other players and turns poker into a game of skill.

Make Your Opponents Pay

Let’s take a quick look at a situation when you’re the one with a made hand and you figure one or more of your opponents to be drawing. Understanding the concept of pot odds should help you to determine an appropriate bet size and charge your adversaries for their possible draws.

Imagine raising a bunch of limpers from late position, holding pocket Jacks. The big blind and the three of the original limpers all call your raise and the five of you watch a flop of :

You’ve hit middle set but there are both straight and flush draws staring at you along with four opponents. There is $86 in the pot and everyone checks to you. You are definitely going to make a continuation bet but you need to decide on how much. Allow me to provide a check list of criteria to think about that as you become more experienced will become so automatic as to not even require any conscious thought.

• Know the pot size – in this case $86.
• Acknowledge the texture of the flop and tendencies of your opponents in terms of potential threats to your holding. Limpers and callers are many times on draws.
• Know the odds to the potential draws the flop offers. In this case both flush and straight draws.
• Make a bet that will not offer the potential draws the correct odds.
• You should bet the size of the pot, $86, in order to make the odds being offered by the pot only 2-to-1 which would not be attractive odds for draws.

If it is true, and I believe it is, that the bulk of your poker profit comes from the mistakes of others rather than you own brilliant play, then identifying opponents that overpay to draw to their hands is critical information. Aside from just playing too many hands, one of the biggest and most expensive mistakes less experienced poker players commit is paying too high a price to try to make their draws. Ferret this information out by tracking the pot and watching showdowns and then you can determine how to manipulate the size of the pot against that opponent in a future hand.

Implied Odds

This is an extension of pot odds and represents the ratio of the total amount you expect to win if you complete your hand, to the amount you would need to call to continue. Put simply, you don’t have the correct odds to call, but if you reason that there’s a good chance that your opponent will bet again when you hit your draw, you might be getting the implied odds to call.

While implied odds are an important tool to be aware of, particularly in no limit hold’em, many less disciplined players abuse it by using it as a justification to chase draws that are not getting the proper pot odds. While pot odds can be calculated with total accuracy, calculating implied odds takes some guess work and knowledge of your opponents’ tendencies. It’s more of an art than a science.

Are your opponents mostly fish?

If yes, they tend to offer a lot of implied odds – but most players leave chips on the table by missing aggression AND using incorrect bet/raise sizes when they hit their hand.

To ensure you don’t fall into the same trap, sign up for CORE today and pay special attention to the lessons on:

· Value Betting (Level 1)

Pot Odds Example

· Overbetting (Level 2: Postflop)

What Are Pot Odds

· Range Elasticity (Level 2: Ranges)

Enroll today for just $5 and see how pot odds (along with 100+ other concepts) fit into the entirety of your poker playbook!

Tournament Play

Much of what has been offered so far is beneficial for both cash games and poker tournaments. But you should approach opponents in tournaments that are desperate a little differently. In a cash game, being pot committed doesn’t really come into play. The term pot committed simply refers to a player who has half or more of his chips already in the pot so if he loses this pot he is pretty much finished anyway. This player will be calling, not based upon the pot odds, but due to his predicament. Players calling in tournament play without the correct pot odds does not necessarily indicate poor play. Calling may well still represent their best chance mathematically to move forward in the tournament and make some money. Hence the expression, do or die!

The reverse situation relative to pot odds can also occur in tournament play. Imagine being in a situation wherein you have the correct pot odds to call but folding could be the better option to advance. An example of this type of phenomenon would be holding the nut flush draw with one card to come with two other opponents already all-in by a monster stack late in a poker tournament. The pot could be offering you greater than the odds required to make the call mathematically correct but the fact still remains that you will miss your flush 80% of the time. If you were on the bubble with the big stack bully already having two other players all-in and you knew you would only prevail in the hand 20 percent of time – I think a fold would be in order.

Many believe that pot odds aren’t nearly as important in tournament play. This is especially true in the lower stake “fast” events that are typical in both live and internet play. These players focus on the odds of their opponents’ calling based upon the size of chip stacks. While some of this is true, if you begin to ignore pot odds because you are in a poker tournament, you will begin to slide down a slippery slope. If you are planning to make a decision that is not in accordance with good pot odds play, you should have a very significant reason.

Put in the Work

Knowing what and how to use pot odds is essential if you wish to become a winning poker player. Learning how to use these concepts to your advantage can put you well ahead of a vast legion of players that are just too lazy to put in the work. They are playing on feel and their gut instincts and proud of it. I’m happy they’re proud of this approach because I know they can’t be proud of their bankrolls. These “proud” players are the assets you need in both cash games and tournaments. Let them be proud – you should put in the work – you’ll be glad you did as you’ll end up with their bankrolls.

By Tom 'TIME' Leonard

Tom has been writing about poker since 1994 and has played across the USA for over 40 years, playing every game in almost every card room in Atlantic City, California and Las Vegas.

This is a very important lesson and can also be quite intimidating to a lot of people as we are going to discuss Poker Math!

But there is no need for you to be intimidated, Poker Maths is very simple and we will show you a very simple method in this lesson.

You won’t need to carry a calculator around with you or perform any complex mathematical calculations.

What is Poker Math?

As daunting as it sounds, it is simply a tool that we use during the decision making process to calculate the Pot Odds in Poker and the chances of us winning the pot.

Remember, Poker is not based on pure luck, it is a game of probabilities, there are a certain number of cards in the deck and a certain probability that outcomes will occur. So we can use this in our decision making process.

Every time we make a decision in Poker it is a mathematical gamble, what we have to make sure is that we only take the gamble when the odds are on in our favour. As long as we do this, in the long term we will always come out on top.

When to Use Poker Maths

Poker Maths is mainly used when we need to hit a card in order to make our hand into a winning hand, and we have to decide whether it is worth carrying on and chasing that card.

To make this decision we consider two elements:

1. How many “Outs” we have (Cards that will make us a winning hand) and how likely it is that an Out will be dealt.
2. What are our “Pot Odds” – How much money will we win in return for us taking the gamble that our Out will be dealt

We then compare the likelihood of us hitting one of our Outs against the Pot Odds we are getting for our bet and see if mathematically it is a good bet.

The best way to understand and explain this is by using a hand walk through, looking at each element individually first, then we’ll bring it all together in order to make a decision on whether we should call the bet.

Consider the following situation where you hold A 8 in the big blind. Before the flop everyone folds round to the small blind who calls the extra 5c, to make the Total pot before the Flop 20c (2 players x 10c). The flop comes down K 9 4 and your opponent bets 10c. Let’s use Poker Math to make the decision on whether to call or not.

Poker Outs

When we are counting the number of “Outs” we have, we are looking at how many cards still remain in the deck that could come on the turn or river which we think will make our hand into the winning hand.

In our example hand you have a flush draw needing only one more Club to make the Nut Flush (highest possible). You also hold an overcard, meaning that if you pair your Ace then you would beat anyone who has already hit a single pair on the flop.

From the looks of that flop we can confidently assume that if you complete your Flush or Pair your Ace then you will hold the leading hand. So how many cards are left in the deck that can turn our hand into the leading hand?

• Flush – There are a total of 13 clubs in the deck, of which we can see 4 clubs already (2 in our hand and 2 on the flop) that means there are a further 9 club cards that we cannot see, so we have 9 Outs here.
• Ace Pair – There are 4 Ace’s in the deck of which we are holding one in our hand, so that leaves a further 3 Aces that we haven’t seen yet, so this creates a further 3 Outs.

So we have 9 outs that will give us a flush and a further 3 outs that will give us Top Pair, so we have a total of 12 outs that we think will give us the winning hand.

So what is the likelihood of one of those 12 outs coming on the Turn or River?

Professor’s Rule of 4 and 2

An easy and quick way to calculate this is by using the Professor’s rule of 4 and 2. This way we can forget about complex calculations and quickly calculate the probability of hitting one of our outs.

The Professor’s Rule of 4 and 2

• After the Flop (2 cards still to come… Turn + River)
  Probability we will hit our Outs = Number of Outs x 4
• After the Turn (1 card to come.. River)
  Probability we will hit our Outs – Number of Outs x 2

So after the flop we have 12 outs which using the Rule of 4 and 2 we can calculate very quickly that the probability of hitting one of our outs is 12 x 4 = 48%. The exact % actually works out to 46.7%, but the rule of 4 and 2 gives us a close enough answer for the purposes we need it for.

If we don’t hit one of our Outs on the Turn then with only the River left to come the probability that we will hit one of our 12 Outs drops to 12 x 2 = 24% (again the exact % works out at 27.3%)

To compare this to the exact percentages lets take a look at our poker outs chart:

As you can see the Rule of 4 and 2 does not give us the exact %, but it is pretty close and a nice quick and easy way to do the math in your head.

Now lets summarise what we have calculated so far:

• We estimate that to win the hand you have 12 Outs
• We have calculated that after the flop with 2 cards still to come there is approximately a 48% chance you will hit one of your outs.

Now we know the Odds of us winning, we need to look at the return we will get for our gamble, or in other words the Pot Odds.

Pot Odds

When we calculate the Pot Odds we are simply looking to see how much money we will win in return for our bet. Again it’s a very simple calculation…

Pot Odds Formula

Pot Odds = Total Pot divided by the Bet I would have to call

What are the pot odds after the flop with our opponent having bet 10c?

• Total Pot = 20c + 10c bet = 30 cents
• Total Bet I would have to make = 10 cents
• Therefore the pot odds are 30 cents divided by 10 cents or 3 to 1.

What does this mean? It means that in order to break even we would need to win once for every 3 times we lose. The amount we would win would be the Total Pot + the bet we make = 30 cents + 10 cents = 40 cents.

Break Even Percentage

Now that we have worked out the Pot Odds we need to convert this into a Break Even Percentage so that we can use it to make our decision. Again it’s another simple calculation that you can do in your head.

Break Even Percentage

Break Even Percentage = 100% divided by (Pot odds added together)

What Are Pot Odds

Let me explain a bit further. Pot Odds added together means replace the “to” with a plus sign eg: 3 to 1 becomes 3+1 = 4. So in the example above our pot odds are 3 to 1 so our Break Even Percentage = 100% divided by 4 = 25%

Note – This only works if you express your pot odds against a factor of 1 eg: “3 to 1” or “5 to 1” etc. It will not work if you express the pot odds as any other factor eg: 3 to 2 etc.

So… Should You call?

So lets bring the two elements together in our example hand and see how we can use the new poker math techniques you have learned to arrive at a decision of whether to continue in the hand or whether to fold.

To do this we compare the percentage probability that we are going to hit one of our Outs and win the hand, with the Break Even Percentage.

Should I Call?

Poker Pot Odds Calc

• Call if…… Probability of Hitting an Out is greater than Pot Odds Break Even Percentage
• Fold if…… Probability of Hitting an Out is less than Pot Odds Break Even Percentage

Our calculations above were as follows:

• Probability of Hitting an Out = 48%
• Break Even Percentage = 25%

If our Probability of hitting an out is higher than the Break Even percentage then this represents a good bet – the odds are in our favour. Why? Because what we are saying above is that we are going to get the winning hand 48% of the time, yet in order to break even we only need to hit the winning hand 25% of the time, so over the long run making this bet will be profitable because we will win the hand more times that we need to in order to just break even.

Hand Walk Through #2

Lets look at another hand example to see poker mathematics in action again.

Before the Flop:

• Blinds: 5 cents / 10 cents
• Your Position: Big Blind
• Your Hand: K 10
• Before Flop Action: Everyone folds to the dealer who calls and the small blind calls, you check.

Two people have called and per the Starting hand chart you should just check here, so the Total Pot before the flop = 30 cents.

Flop comes down Q J 6 and the Dealer bets 10c, the small blind folds.

Do we call? Lets go through the thought process:

How has the Flop helped my hand?
It hasn’t but we do have some draws as we have an open ended straight draw (any Ace or 9 will give us a straight) We also have an overcard with the King.

How has the Flop helped my opponent?
The Dealer did not raise before the flop so it is unlikely he is holding a really strong hand. He may have limped in with high cards or suited connectors. At this stage our best guess is to assume that he has hit top pair and holds a pair of Queens. It’s possible that he hit 2 pair with Q J or he holds a small pair like 6’s and now has a set, but we come to the conclusion that this is unlikely.

How many Outs do we have?
So we conclude that we are facing top pair, in which case we need to hit our straight or a King to make top pair to hold the winning hand.

• Open Ended Straight Draw = 8 Outs (4 Aces and 4 Nines)
• King Top Pair = 3 Outs (4 Kings less the King in our hand)
• Total Outs = 11 Probability of Winning = 11 x 4 = 44%

What are the Pot Odds?
Total Pot is now 40 cents and we are asked to call 10 cents so our Pot odds are 4 to 1 and our break even % = 100% divided by 5 = 20%.

Decision
So now we have quickly run the numbers it is clear that this is a good bet for us (44% vs 20%), and we make the call – Total Pot now equals 50 cents.

Turn Card

Turn Card = 3 and our opponent makes a bet of 25 cents.

After the Turn Card
This card has not helped us and it is unlikely that it has helped our opponent, so at this point we still estimate that our opponent is still in the lead with top pair.

Outs
We still need to hit one of our 11 Outs and now with only the River card to come our Probability of Winning has reduced and is now = 11 x 2 = 22%

Pot Odds
The Total Pot is now 75 cents and our Pot odds are 75 divided by 25 = 3 to 1. This makes our Break Even percentage = 100% divided by 4 = 25%

Decision
So now we have the situation where our probability of winning is less than the break even percentage and so at this point we would fold, even though it is a close call.

Summary

Well that was a very heavy lesson, but I hope you can see how Poker Maths doesn’t have to be intimidating, and really they are just some simple calculations that you can do in your head. The numbers never lie, and you can use them to make decisions very easy in Poker.

You’ve learnt some important new skills and it’s time to practise them and get back to the tables with the next stage of the Poker Bankroll Challenge.

Poker Bankroll Challenge: Stage 3

• Stakes: $0.02/$0.04
• Buy In: $3 (75 x BB)
• Starting Bankroll: $34
• Target: $9 (3 x Buy In)
• Finishing Bankroll: $43
• Estimated Sessions: 3

Use this exercise to start to consider your Outs and Pot Odds in your decision making process, and add this tool to the other tools you have already put into practice such as the starting hands chart.