Calculate your outs, win probability, and pot odds in Texas Hold'em.
Poker odds represent the probability of your hand winning against opponents' hands given the cards visible so far. The two key concepts are "outs" (the number of unseen cards that would improve your hand) and "pot odds" (the ratio of the current pot size to the cost of a call). Making profitable decisions in poker requires comparing your probability of winning to the pot odds being offered.
Enter your hole cards and any community cards already dealt (flop, turn). The calculator shows your probability of winning, the probability of each possible hand combination (flush, straight, full house, etc.), and the number of outs you have. For multi-player scenarios, enter opponents' hands (or ranges) to see head-to-head matchup probabilities.
Texas Hold'em involves 1,326 possible two-card starting hands. Pocket aces (the best starting hand) occur once every 221 hands (0.45%). The probability of being dealt any specific pocket pair is 0.45%, while the probability of being dealt any pocket pair is 5.88% (once every 17 hands). Suited connectors like 8-9 of hearts occur once every 331 hands.
After the flop, you can calculate your odds of improving by counting "outs" (cards that complete your hand). Each out gives approximately 2% equity per remaining card. With two cards to come (after the flop), multiply your outs by 4 for an approximation. With one card to come (after the turn), multiply by 2. For example, a flush draw has 9 outs: 9 x 4 = 36% chance of completing by the river, or 9 x 2 = 18% on the turn alone.
Pot odds compare the current pot size to the cost of a call. If the pot is $100 and you must call $20, your pot odds are 5:1 (you need to win at least 1 in 6 times, or 16.7%, to break even). Compare pot odds to your hand equity: if your flush draw gives you 36% equity but you only need 16.7% to justify a call, calling is mathematically correct. The Probability Calculator handles general probability scenarios. Long-term profitability in poker comes from consistently making decisions with positive expected value.
Profitable poker decisions rely on expected value (EV) calculations. A decision has positive EV when the potential gain weighted by its probability exceeds the potential loss weighted by its probability. For example: the pot is $100, you must call $25, and your draw hits 20% of the time. Your EV = (0.20 x $100) - (0.80 x $25) = $20 - $20 = $0 (break-even). With pot odds of 4:1 (calling $25 to win $100), you need at least a 20% chance to profit. The "rule of 2 and 4" is a quick mental shortcut: multiply your outs by 4 after the flop (for two cards to come) or by 2 after the turn (for one card to come) to estimate your percentage chance of hitting. With 9 outs (a flush draw), that is roughly 36% on the flop and 18% on the turn.