Poker

Pot Odds

Definition

Pot odds are the ratio between the current size of the pot and the cost of calling a bet, used to judge whether chasing a drawing hand is worth the price.

In Detail

Pot odds compare what a call costs against what the pot pays out if that call wins. Say there's $100 in the middle and an opponent bets $50. Calling costs $50 to win a pot that will then hold $200, so the required equity works out to 25 percent, or roughly 3 to 1 in ratio terms. Anyone can run that division mid-hand; the harder part is trusting the number under pressure with chips already committed. At the table, pot odds only mean something once they're weighed against a second figure: the actual chance a drawing hand completes. A flush draw with one card left to come is close to a 4 to 1 underdog to hit. If the pot is only offering 3 to 1, calling loses money over the long run even on the hands where the flush lands anyway. Flip that comparison the other way and calling becomes the correct play regardless of how any single hand ends, which is the whole point of thinking in ratios instead of gut feel. Online players lean on shortcuts like the rule of 4 and 2, multiplying outs by 4 on the flop or by 2 on the turn to estimate hand equity fast enough to keep up with a fast-folding table. Live players tend to round the pot and bet to the nearest clean number rather than doing exact division, since a call rarely lives or dies on a single percentage point.

Examples

Calling a flush draw on the turn

The pot holds $100 and an opponent bets $50 on the turn. Calling costs $50 into a pot that becomes $200, for 3-to-1 pot odds, meaning 25 percent equity is needed to break even. A flush draw with nine outs and one card to come is roughly a 4-to-1 underdog, so a plain call loses money here even though the draw hits about one hand in five.

When fold equity changes the math

The pot-odds call above is a loser on its own, but raising instead of calling adds a second way to win the pot: the opponent folding outright. That extra chance is fold equity, and it can turn a borderline pot-odds call into a profitable raise even when the drawing hand itself is behind the numbers, see fold-equity for how that second piece works.