What pot odds tell you
Pot odds compare the amount you must call with the size of the pot you could win. The calculation helps you judge whether a call is worth its price, given how often you expect to win the hand. It does not guarantee the outcome of any individual play: a mathematically favorable decision can still lose.
To calculate poker pot odds, divide the call amount by the final pot after you call, then multiply by 100. The final pot includes the money already in the pot, the opponent’s bet, and your call.
An example and the comparison with equity
Suppose the pot held R$100 before your opponent bet R$50. There is now R$150 in the pot, and you must call R$50. After your call, the final pot will be R$200. The calculation is R$50 ÷ R$200 = 25%. In simplified terms, you need to win at least once in four tries for the call to have non-negative expected value.
Compare that threshold with your equity: your probability of winning the hand, considering possible cards and your opponent’s hand. If your equity is above 25%, the call tends to be profitable over the long run; if it is below, the call tends to lose value. Equity is not the same as the chance of merely improving. A card can complete your draw without making you the winner, and an apparent out may also help your opponent.
Outs, estimates, and limits
Outs are cards that can improve your hand to a potentially winning combination. With a nine-out flush draw, a common estimate is about a 19% chance to complete on the turn and 35% by the river, if you can see both cards. The quick rule of 2 and 4 estimates the probability by multiplying your outs by 2 for one card to come or by 4 for the turn and river. These are approximations, not a replacement for an exact calculation.
Future betting can also affect the decision, including the chance your opponent bets again and how much you might win if you hit. Implied pot odds describe the possibility of winning additional chips on later streets, but those gains are not guaranteed. Use pot odds to compare the call’s price with a realistic estimate of your equity and the situation in the hand, rather than treating the calculation as an automatic instruction to call or fold.