What Are Pot Odds?
Pot odds are the ratio between the current size of the pot and the cost of a contemplated call. They tell you the minimum percentage of the time you need to win to break even on a call. Understanding pot odds is one of the most fundamental skills in poker because it turns guesswork into math.
How to Calculate Pot Odds
The formula is straightforward:
Pot Odds = Call Amount / (Pot + Call Amount)
This gives you a percentage. If your chance of winning (equity) exceeds this percentage, calling is mathematically profitable in the long run.
Step-by-Step Example
- The pot is $100.
- Your opponent bets $50.
- You must call $50 to stay in the hand.
- Total pot after your call: $100 + $50 + $50 = $200.
- Pot odds: $50 / $200 = 25%.
- If your equity is above 25%, calling is profitable (+EV).
See this example in the calculator.
Pot Odds as a Ratio
Some players prefer to express pot odds as a ratio instead of a percentage. In the example above, you are risking $50 to win $150 (the pot plus your opponent's bet), so your pot odds are 3:1. This means you need to win at least 1 out of every 4 times (25%) to break even.
To convert a ratio to a percentage: divide the call by the sum of the pot and the call. To convert a percentage back to a ratio: if pot odds are 25%, that means 1 / (1 + 3) = 25%, or 3-to-1 against.
Common Pot Odds Scenarios
| Bet Size | Pot Odds | Equity Needed |
|---|---|---|
| 25% pot | 5:1 | 16.7% |
| 33% pot | 4:1 | 20.0% |
| 50% pot | 3:1 | 25.0% |
| 67% pot | 2.5:1 | 28.6% |
| 75% pot | 2.3:1 | 30.0% |
| 100% pot | 2:1 | 33.3% |
| 150% pot | 1.7:1 | 37.5% |
Comparing Pot Odds to Equity
Once you know your pot odds, compare them to your equity. Your equity is the percentage of the time you expect to win the hand. You can estimate equity by counting outs and applying the rule of 2 and 4, or use the pot odds widget on the calculator for precise numbers.
- Equity > Pot Odds: Calling is +EV (profitable). Call or raise.
- Equity < Pot Odds: Calling is -EV (unprofitable). Fold unless implied odds change the equation.
- Equity = Pot Odds: Break-even. Other factors like position and implied odds tip the decision.
Implied Odds
Pot odds only account for the money already in the pot. Implied odds consider additional money you expect to win on future streets if you hit your draw. With strong implied odds, you can profitably call even when pot odds alone don't justify it.
Implied odds are higher when: your opponent has a big stack, your draw is well-hidden (like a gutshot that hits), and your opponent is likely to pay off a big bet when you hit. They are lower against short stacks, on obvious draw-completing cards, and against cautious opponents.
Reverse Implied Odds
Sometimes you can make your hand but still lose to a better hand. This is called reverse implied odds. For example, if you have a small flush draw and your opponent might have a bigger flush draw, completing your flush could cost you more money.
Factor in reverse implied odds when: your draw is to a non-nut hand, the board is coordinated and scary, or your opponent's range includes hands that dominate your draw.
Putting It All Together
The best poker players constantly run pot odds calculations during a hand. With practice, it becomes second nature. Start by memorizing the common bet-size-to-pot-odds table above, then estimate your equity from your outs. The math will guide your decisions and help you avoid costly mistakes.
Next Steps
- Use the pot odds widget on the calculator to practice with real numbers.
- Learn how to count outs to estimate your equity at the table.
- Understand equity to know how pot odds and equity work together.
- Test your skills with pot odds quiz questions.