Texas Hold'em Poker Odds Calculator
Calculate your equity and winning probability based on your outs.
After the Flop (2 cards to come)
After the Turn (1 card to come)
Win Probability:
0%
Odds Ratio:
1 : 1
Percentage of Losing:
0%
How to Calculate Poker Odds
In Texas Hold'em, "outs" are the cards remaining in the deck that will improve your hand to a winning one. Understanding your odds of hitting one of those cards is essential for determining whether you should call a bet based on the pot odds offered to you.
The Rule of 2 and 4
A quick shortcut used by professional players to estimate equity is the "Rule of 2 and 4":
- On the Flop: Multiply your outs by 4 to see your approximate percentage of hitting the hand by the river.
- On the Turn: Multiply your outs by 2 to see your approximate percentage of hitting the hand on the river.
While this shortcut is effective for quick math at the table, our calculator uses exact combinatorial mathematics to provide the precise percentage.
Common "Out" Scenarios
| Drawing Hand | Number of Outs | Example |
|---|---|---|
| Flush Draw | 9 | 4 suited cards on flop |
| Open-Ended Straight | 8 | 6-7-8-9 unsuited |
| Two Overcards | 6 | A-K vs a lower pair |
| Inside Straight (Gutshot) | 4 | 5-6-8-9 (needs a 7) |
| Set to Full House | 7 | Pair on board, you have a set |
Using Odds to Make Decisions
Once you know your win probability, you can compare it to the "Pot Odds." If the cost to call is less than your equity in the pot, the call is mathematically profitable in the long run (Positive Expected Value, or +EV). For example, if you have a 25% chance of winning (3:1 odds) and the pot is offering you 4:1 on your money, you should always call.