Pot Odds Calculator
The price the pot is offering, the equity you need to call it, and a verdict against the outs you actually have.
A call is profitable when you win more often than the price requires. Enter the pot and the bet for the price, count your outs for how often you hit, and the two together give a verdict. Both numbers are exact, and the spot is written into the page URL so you can share it.
What the pot is offering
What you expect to win later if you hit
What your draw is worth
Rule of 4 says 36.0% — off by 1.0 points.
You need 25.0% to break even and you hit 35.0% of the time, a 10.0-point edge.
How pot odds work
You are being offered a price. The pot holds $80, your opponent bets $40, and calling costs you $40 to win the $120 that would be in the middle. That is 3:1, and the way to make it useful is to turn it into a percentage: your $40 is a quarter of the $160 pot you are playing for, so you break even by winning 25% of the time.
The general form is call ÷ (pot + bet + call). It is worth memorizing the handful of results rather than the formula, because at the table you will be sizing against the pot: a pot-sized bet needs 33.3%, three-quarters needs 30%, half needs 25%, a third needs 20%. Larger bets demand you be right more often, which is the whole reason they pressure draws.
None of this says anything about whether you will win — only about the price. The second number has to come from your hand.
Equity needed by bet size
| Bet size | Pot odds | Equity needed |
|---|---|---|
| Quarter pot | 5.00:1 | 16.7% |
| Third pot | 4.00:1 | 20.0% |
| Half pot | 3.00:1 | 25.0% |
| Two-thirds pot | 2.50:1 | 28.6% |
| Three-quarter pot | 2.33:1 | 30.0% |
| Pot | 2.00:1 | 33.3% |
| Overbet, twice pot | 1.50:1 | 40.0% |
Equity by number of outs
Exact chances of completing a draw, with the Rule of 2 and 4 beside them so you can see where the shortcut drifts. It overstates from the flop and understates from the turn, and both errors grow with more outs.
| Draw | Outs | Flop (2 cards) | Turn (1 card) |
|---|---|---|---|
| Backdoor flush (runner-runner) | 1 | 4.3%(rule 4.0%) | 2.2%(rule 2.0%) |
| Gutshot straight draw | 4 | 16.5%(rule 16.0%) | 8.7%(rule 8.0%) |
| Two overcards | 6 | 24.1%(rule 24.0%) | 13.0%(rule 12.0%) |
| Open-ended straight draw | 8 | 31.5%(rule 32.0%) | 17.4%(rule 16.0%) |
| Flush draw | 9 | 35.0%(rule 36.0%) | 19.6%(rule 18.0%) |
| Flush draw + gutshot | 12 | 45.0%(rule 48.0%) | 26.1%(rule 24.0%) |
| Flush draw + open-ender | 15 | 54.1%(rule 60.0%) | 32.6%(rule 30.0%) |
Where the number stops being the answer
Counting outs assumes every out wins. Often they do not. The flush card that completes your draw can pair the board and fill someone else's house; the straight you make with the low end can lose to the same straight made higher. Discount the outs you are not sure about rather than pretending you have all of them.
The price also changes after you call. On the flop, calling buys one card, not two — if your opponent bets the turn as well, you are paying again. That is why the flop column above flatters a draw: use the turn row when you expect another bet, or the flop row when you are closing the action all in.
Implied odds work the other way. If hitting quietly wins you a big river bet, the extra money makes calls correct that the raw price rejects. Enter what you realistically expect to collect, not what you would collect if everything went perfectly.
Where to go next
The longer walkthrough of this maths, with worked hands, is in how to calculate pot odds. For counting outs in the first place, the outs and equity chart lists every common draw and what it is worth on each street.
When you know both hands rather than just your own, the odds calculator enumerates every runout for the exact equity instead of an out count. If you are still learning what beats what, start at poker hand rankings.
Common questions
What are pot odds?
Pot odds are the price the pot is offering you on a call: the money already in the pot plus the current bet, compared to what the call costs you. If the pot is $80 and you face a $40 bet, you are risking $40 to win $120, which is 3:1. Expressed as a percentage, you need to win 25% of the time to break even.
How do you calculate pot odds?
Divide the call by the total pot after you call. With an $80 pot and a $40 bet, calling makes the pot $160 ($80 + $40 + your $40), and $40 / $160 is 25%. That percentage is the share of the time you need to win for the call to be break-even. Anything above it is profit.
How much equity do I need to call a pot-sized bet?
33.3%. A pot-sized bet lays you 2:1, so you break even winning one time in three. A half-pot bet needs 25%, a third-pot bet 20%, and a two-thirds-pot bet 28.6%. The bigger the bet relative to the pot, the more often you need to be right.
What is the Rule of 2 and 4?
A shortcut for turning outs into equity: multiply your outs by 4 from the flop when two cards are still to come, and by 2 from the turn when one is. Nine outs is roughly 36% from the flop and 18% from the turn, against exact figures of 35.0% and 19.6%. The rule overstates from the flop and understates from the turn, and the error grows with the number of outs.
What are implied odds?
Implied odds account for money you expect to win on later streets when you hit your draw, not just what is in the pot now. They lower the equity you need, which can turn a marginal fold into a call. Treat them as a read rather than a fact: the money is not in the pot yet, and it only arrives if your opponent pays you off.
Do pot odds alone tell me whether to call?
Not on their own. Pot odds against your equity settle whether a call is profitable on this street, which is the right question for a draw facing a river bet. Earlier in the hand, position, the chance of being raised behind you, and whether hitting your draw actually wins all matter. Use pot odds as the floor for the decision, not the whole of it.
Draw equity is an exact count over the unseen cards, not a simulation. Pot odds ignore future betting unless you enter an implied extra. The verdict answers whether the call is profitable on this street alone.
Ran the numbers. Now track the hand.
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