Guide · Poker odds

Pot odds and outs: when to call with a draw

The math that separates calling out of habit from calling because it pays. It takes a few seconds at the table and you do not need a calculator.

4 min read · Updated on October 26, 2026

In short

Pot odds tell you how often you need to win for a call to be profitable: the amount you call ÷ the total pot after you call. If your opponent bets half the pot, you need to win 25% of the time. If your chance of hitting your draw is higher than that, call.

needed to call a half-pot bet: 25%; needed to call a half-pot bet
needed to call a pot-sized bet: 33%; needed to call a pot-sized bet
your outs with 1 card to come: ×2; your outs with 1 card to come
your outs with 2 cards to come: ×4; your outs with 2 cards to come

How to calculate pot odds in 3 steps

01
What you have to call
The pot is 100 and your opponent bets 50. You have to call 50.
02
What the pot will be if you call
100 in the pot + 50 from your opponent + your 50 = 200.
03
Divide
50 ÷ 200 = 25%. If you win more than 25% of the time, calling makes chips in the long run.

How often you need to win, by the size of the bet you face
Opponent bets…	You need to win	Pot odds
1/4 pot	16.7%	5 to 1
1/3 pot	20.0%	4 to 1
1/2 pot	25.0%	3 to 1
2/3 pot	28.6%	2.5 to 1
3/4 pot	30.0%	2.3 to 1
Pot-sized bet	33.3%	2 to 1
2x pot	40.0%	1.5 to 1

How often you need to win, by the size of the bet you face. Quick formula: bet ÷ (pot + 2 × bet), where the pot is the size before the bet.

How to count your outs

Outs are the cards left in the deck that make your winning hand. These are the most common draws:

9 outs

Flush draw

You hold 4 cards of one suit. 9 of that suit are left.

8 outs

Open-ended straight draw

Example: 8-7 on a 6-5 board. Any 9 or any 4 completes it.

6 outs

Two overcards

Example: A-K on a low board. Any ace or king.

4 outs

Gutshot straight draw

Example: 9-8 on a 6-5 board. Only a 7 completes it.

2 outs

Pair to a set

Two cards of your rank are left in the deck.

15 outs

Flush draw + open-ended straight draw

The strongest draw: close to a coin flip against a made pair.

Flush draw: 4 hearts (2 in your hand, 2 on the board). Any of the 9 remaining hearts completes it.

The rule of 2 and 4

One card to come: outs × 2

On the flop when you will only see the turn, or on the turn. Flush draw: 9 × 2 = 18% (exact: 19.1%).

Two cards to come: outs × 4

Only when you are all in on the flop and will see both turn and river. Flush draw: 9 × 4 = 36% (exact: 35%).

Two examples from the table

Fold

Turn: flush draw vs. a half-pot bet

You need 25%. With one card to come you have 9 × 2 = 18%. That is not enough: fold (unless you expect to get paid a lot when you hit).

Call

Flop: all in with flush + open-ended draw

Your opponent shoves the size of the pot, so you need 33%. With 15 outs and two cards to come you have 54%. Easy call.

Implied odds: when calling without the right pot odds is still fine

If your opponent will pay you more chips on later streets when you hit, you can call with a bit less than the math says. That is called implied odds.

It works best when your draw is hidden (a gutshot) and your opponent has a deep stack. It works worse with obvious flush draws: when the fourth card of the suit lands, everyone notices.

Frequently asked questions

What are pot odds in poker?

The ratio between what you have to call and what you can win. They tell you what percentage of the time you need to win for a call to be profitable in the long run.

How do you calculate pot odds?

Divide the amount you call by the total pot after you call. If you call 50 to win a final pot of 200, you need to win 25% of the time.

What are outs in poker?

The cards left in the deck that give you the winning hand. A flush draw has 9 outs; an open-ended straight draw has 8.

What is the rule of 2 and 4?

A shortcut: multiply your outs by 2 if one card is to come and by 4 if two cards are to come. It gives the approximate chance of hitting your draw.

How many outs does a flush draw have?

9. There are 13 cards of each suit; if you can see 4 of them, 9 are left.

What is the difference between pot odds and implied odds?

Pot odds use only the chips already in the pot. Implied odds also count the extra chips you expect to win on later streets if you hit your draw.

Doing the math at the table is a skill you build by practicing.

We give you real draws against real bets and tell you whether calling was right. Free, and no real money.

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