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Working Out Poker Percentages

Poker Percent Calculations

Percentage Calculator

Enter numbers into the fields below to work out percentage.

What is % of ? Answer:

is what percent of ? Answer: %

The Method

It is really very simple to work out your poker percentage chance of hitting what you need on the next card the quickest and easiest way that I find is to use a simple formula.

Take your number of outs and double it. Then add 2. The resulting number is now your percentage chance of hitting your card.

Quick Example

I have a heart flush draw on the flop.

Your Hand	Flop	Turn	River

I can see four hearts in total and so I know there must be 9 hearts left in the deck. Therefore I have 9 outs:

Let's take our outs and double it.

9 × 2 = 18

Next, we add two to the total.

18 + 2 = 20

We have 20% chance of hitting the card we need to make our flush.

Odds into Percentages

Not too hasty! How do I get this to relate to my pot odds? I hear you cry. To convert a percentage into odds we do the following:

There can clearly only ever be 100% so all we do is divide the % chance that we won't hit our out (80%) by the % chance that we will (20%).

Examples:

• 20% chance = 80% ÷ 20% = 4:1
• 30% chance = 70% ÷ 30% = 2.3:1
• 40% chance = 60% ÷ 40% = 1.5:1

Remember that 4:1 is a ratio and not a fraction. 4:1 is not the same as one quarter. 4:1 means that for every five games you play, you will lose four games, and win one.

Two Cards To come

We have covered working out the percentage for your next card all well and good when we are playing the turn, but what about playing the flop when there are two cards to come?

Easy! Again, take your number of outs but this time multiply them by 4 instead of 2. Thats it! See? I told you it was simple.

I have my flush draw again and someone has just gone all in on the flop against me. What are my odds of hitting my flush by the river?

Your Hand	Flop	Turn	River

I have 9 outs again:

9 × 4 = 36%

64% ÷ 36% = 1.8 to 1

The actual correct figure for this scenarios is 1.9 to one, however the above demonstrates a very easy and quick way to work out your percentages with high accuracy.

Protecting Your Hand How Much To Bet

Lets do a couple of real examples to see how we can make money and not lose it.

You are sitting on the button at a 5/10 No Limit ring game with T9hearts with 4 players seeing the flop.

Your Hand	Flop	Turn	River

You have flopped open-ended and are drawing to the best hand.

There is 40 in the pot and the player in early position bets out 10. One player folds and the other calls now its your turn.

There is now 60 in the pot (40 preflop and two bets of 10). Should you call 10?

Think about it. Scroll up the page and see if you can work it out. Read on for the answer.

Answer: Yeah! All day long

What is your chance of hitting your straight with the next card? Any 7 or any Q will do you, so therefore you have 8 outs.

As far as you are concerned there are four 7s plus four Queens left in the deck to give you a total of 8 outs.

Remember: (outs × 2) + 2 = % chance of hitting.

8 × 2 = 16

16 + 2 = 18

18% is a little over 5 to 1. You are being offered 6 to 1 pot odds and so should definitely call.

Let's Go Agian

Let's look at it again, this time with an all in situation.

Again 4 players see the same flop, only this time the player in early position goes all in for his remaining 20 and the other two players both fold now its down to you again. You have to put in 20 to win 60 (40 preflop and then the 20 all in bet). What is your chance of hitting your straight with two cards to come?

You still have 8 outs only this time we multiply by 4.

8 × 4 = 32%

68% ÷ 32% = 2.1

You are being offered 3 to 1 pot odds (60:20) and so a call would be wise here!

One More Time

Same example again, only this time the early position has gone all in for 20, then the person in middle position re-raises to 60. Lets look at the pot:

40 preflop

+20 from EP

+60 from MP

=total of 120

We have to call 60 to win 120 so have pot odds of 2 to 1. As we calculated above we need at least 2.1 to 1 in order to be able to call this would be a mistake in the long run and we would end up losing money. Best to fold and let them fight it out.

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