Pot odds compare what it costs you to call with what you can win. They answer one question: how often do I need to win for this call to break even? They don’t tell you whether to call on their own. For that you also need a rough idea of how often you’ll actually win.
The quick method
Add up the pot after you call, then divide your call by that total.
Equity needed = your call ÷ (pot + their bet + your call)
Example: there’s $100 in the pot and your opponent bets $50. It costs you $50 to call. After you call, the pot is $100 + $50 + $50 = $200. Your call is $50 of that $200, so you need to win 25% of the time to break even. Win more often than that and the call makes money over time. Win less and it loses.
The same thing in ratio form: the pot is $150 and you’re calling $50, so you’re getting 3 to 1. That means you need to win at least one time in four, which is 25%.
Common bet sizes
You’ll see the same few bet sizes all night. Learn these and you rarely need to do the math.
| Opponent bets | Pot odds | Equity you need to call |
|---|---|---|
| A quarter of the pot | 5 to 1 | About 17% |
| A third of the pot | 4 to 1 | 20% |
| Half the pot | 3 to 1 | 25% |
| Two-thirds of the pot | 2.5 to 1 | About 29% |
| The size of the pot | 2 to 1 | About 33% |
| Twice the pot | 1.5 to 1 | 40% |
A real hand: flush draw on the turn
$1/$3. You have A♥J♥ and the board on the turn is K♥8♥3♣5♦. The pot is $60 and your opponent bets $30.
- Price. You call $30 to win a final pot of $120. You need 25%.
- Your chances. Nine hearts are left. With one card to come, 9 outs is about 18% by the quick rule (9 × 2), or 9 in 46, about 20%, exactly.
- Decision. 20% is short of 25%, so on pure pot odds this is a fold. Two things can change that. If you think an ace also wins against a king with a weak kicker, you have 12 outs, about 26%, and the call is just fine. And if you’re confident you’ll get paid on the river when a heart comes, the extra money you’ll win (implied odds) can make up the gap.
Change the bet to $15 into $60. Now you need 15 ÷ 90, about 17%, and the call is clear.
Counting outs is covered in detail on draws and outs.
Implied odds, and where they stop
Implied odds count the money you expect to win on later streets when you hit. They matter most when stacks are deep and your draw is hidden, like a small pair hoping to flop a set.
They are not an excuse to call every draw. If your opponent will only pay you off when they also improve, or if your draw can make a second-best hand (a low flush against a higher one), your real odds are worse than they look. That second problem is called reverse implied odds.
Common mistakes
- Using the pot before the opponent’s bet instead of after it.
- Using the two-card “rule of 4” when you only get to see one more card before the next bet.
- Counting outs that also give your opponent a better hand.
- Forgetting the rake, which takes a little out of every pot you win.
- Calling because “it’s only $20” without checking what you need to win.
FAQ
How do you calculate pot odds?
Divide the amount you have to call by the total pot after your call. Calling $50 into a final pot of $200 means you need to win 25% of the time to break even.
What is the difference between pot odds and equity?
Pot odds are the price you’re being offered. Equity is how often your hand wins. You call when your equity is higher than the equity the pot odds require.
What are good pot odds for a flush draw?
With one card to come, a flush draw hits about 19% to 20% of the time, so you need a bet of about a quarter of the pot or less to call on direct odds. Bigger bets need implied odds to justify a call.
Do pros use pot odds at live tables?
Yes, but they don’t do long division. They memorize the common bet sizes (half pot needs 25%, pot needs 33%) and round.
By the TorontoPoker.org editorial team · Updated September 2026 · 19+ · Play responsibly