Pot odds calculator
Enter the pot, the bet you face and your outs, and see what share of the time you need to win, how often you will, and what the call is worth on average.
The call makes money over time.
How the figure is worked out
The share of the time you need to win is the call divided by the pot after your call. The chance you will win comes from your outs: on the flop, with two cards to come and 47 unseen cards, the chance of hitting at least once is one minus the chance of missing twice; on the turn it is your outs divided by 46. Nine outs give 35.0% on the flop and 19.6% on the turn.
The value of the call is your chance of winning times what is in the pot, less your chance of losing times what you pay. With $100 in the pot and a $50 bet, a flush draw on the flop wins $150 35% of the time and loses $50 the other 65%: that is $52.50 less $32.50, so the call is worth $20 on average, even though you miss two times in three.
Outs are an estimate. A flush draw is worth less than nine outs when a pair on the board can give someone a full house, and a straight draw is worth less when it also completes a flush for someone else. Count the clean outs.
Questions
How do I work out pot odds?
Divide what you must call by the total pot after your call. Facing a $50 bet into a $100 pot, you call $50 to make the pot $200, so you need to win 50 divided by 200, which is 25% of the time, to break even.
How do I count outs?
Count the unseen cards that make your hand the best. A flush draw has nine: the thirteen cards of the suit, less the two in your hand and the two on the board. An open-ended straight draw has eight, an inside straight draw four. Take away any out that would also give an opponent a better hand.
What is the rule of four and two?
A quick estimate at the table: multiply your outs by four on the flop, with two cards to come, and by two on the turn, with one card to come, to get your chance in percent. Nine outs on the flop gives 36%, close to the exact 35%.
What about the money I can win later?
That is implied odds: the extra you expect to win on later streets when you hit. A draw that is a small loss on pot odds alone can be a call when the opponent will pay more after you get there, and a fold when they will not. This calculator shows the plain pot odds; the implied odds calculator adds the money from later streets.