By Maya Chen, Senior Poker Analyst · March 22, 2026
What Are Pot Odds?
Pot odds are the foundation of profitable poker. They tell you whether a call is mathematically correct based on the current pot size and what you need to put in. The formula is: call amount divided by (pot + opponent's bet + your call). This gives you the percentage of the pot you are contributing.
If the pot is $50, your opponent bets $25, and you need to call $25, the total pot after your call is $100. You are putting in $25 out of $100, so your pot odds are 25%. If your hand will win more than 25% of the time, calling is profitable.
Counting Your Outs
To figure out your equity, start by counting your outs: cards remaining in the deck that complete your draw or improve your hand to the winner. Common draws and their outs:
| Draw | Outs | Turn % | River % |
|---|---|---|---|
| Flush draw | 9 | ~19% | ~35% |
| Open-ended straight draw | 8 | ~17% | ~32% |
| Gutshot straight draw | 4 | ~9% | ~17% |
| Two overcards | 6 | ~13% | ~24% |
| Flush draw + gutshot | 12 | ~26% | ~45% |
| Set to full house/quads | 7 | ~15% | ~28% |
The quick approximation: multiply your outs by 2 for the chance to hit on the next card, or by 4 for the chance to hit by the river. This is the "Rule of 2 and 4." It is not exact but is close enough for in-game decisions.
Practical Example
You hold 8♥ 7♥ on a board of K♥ 5♥ 2♠. You have a flush draw with 9 outs. Your opponent bets $30 into a $40 pot. You need to call $30 into a total pot of $100, giving you 30% pot odds. Your flush draw has roughly 35% equity to hit by the river (but only 19% on the turn alone).
If you are only seeing one more card (the turn), your 19% equity is less than the 30% you need. A pure pot odds call is not correct. But if you expect to see both the turn and river for this one bet (your opponent is unlikely to bet again), your 35% equity beats the 30% threshold, making the call profitable.
Expected Value (EV)
Expected value extends pot odds into a dollar amount. It tells you the average profit or loss of a decision over many repetitions. The formula is: EV = (probability of winning x amount you win) minus (probability of losing x amount you lose).
Using the example above: if you call $30 and hit your flush 35% of the time, winning the $70 already in the pot, your EV is: (0.35 x $70) minus (0.65 x $30) = $24.50 - $19.50 = +$5.00. Over the long run, this call earns you an average of $5 per attempt. Positive EV decisions compound into a winning player over time.
When to Use Implied Odds
Sometimes your pot odds do not justify a call, but implied odds do. Implied odds account for future bets you will win when you hit your draw. The key question is: how much more will your opponent put in after you make your hand?
Implied odds are best when: your draw is hidden (your opponent will not see it coming), your opponent has a strong-looking hand they will not let go of, and the stacks are deep enough to get paid off. Implied odds are worst when: the draw completes an obvious board (three-flush, four-straight), your opponent is cautious and will check-fold, or the stacks are shallow.
Use our odds calculator to practice calculating equity for specific hand matchups.
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Frequently Asked Questions
Pot odds are the ratio between the pot and the amount you need to call. If the pot is $60 and you must call $20, your pot odds are 3:1 or 25%. You need more than 25% equity to make a profitable call.
Expected value (EV) is the average amount you gain or lose on a decision over many repetitions. If a call costs $20, you win $100 when you hit (30% of the time) and lose $20 when you miss (70%), your EV is 0.30 x $100 minus 0.70 x $20 = +$16.
Outs are cards that improve your hand to the likely winner. A flush draw has 9 outs (13 of a suit minus 4 you can see). An open-ended straight draw has 8 outs. Multiply your outs by 2 for the chance to hit on the next card, or by 4 for the chance to hit by the river (rough approximation).