Pot Odds Calculator
Work out your pot odds and your equity from outs — and see whether it's a profitable call or a fold.
An out is a card that improves your hand into a winner. A flush draw, for example, has 9 outs.
Enter the pot, the amount to call, and your outs to see your pot odds and equity.
This calculation uses the rule of 2 and 4, a simplified shortcut. It doesn't account for implied odds, fold equity, or your opponent's range. Use it as guidance, not an exact answer.
Pot odds tell you what share of the pot your call represents — in other words, how often you need to win the hand just to break even. By comparing your pot odds against your equity (your chance of making the best hand), you can make mathematically sound call-or-fold decisions at the table instead of relying on gut feel.
How pot odds and the rule of 2 and 4 work
Pot odds are calculated as the amount you must call divided by the total pot after your call: pot odds = call / (pot + call) × 100. Calling 200 into a 600 pot gives 200 / (600 + 200) = 25%. That means you need to win the hand at least 25% of the time for the call to break even.
The rule of 2 and 4 is a fast shortcut for estimating your equity from your outs (cards that turn your hand into a winner). With two cards still to come (after the flop), multiply your outs by 4. With one card left (after the turn), multiply by 2. A flush draw with 9 outs is roughly 9 × 4 = 36% equity on the flop, or 9 × 2 = 18% on the turn.
The decision rule is simple: if your equity is higher than your pot odds, calling is mathematically profitable, because you win the hand more often than the price demands. If your equity is lower than your pot odds, you lose money on the call over time, and folding is the mathematically correct choice — unless other factors like implied odds or fold equity justify calling anyway.
Worked example
You hold a flush draw (9 outs) on the flop. The pot is 600 and your opponent bets so that you need to call 200.
Your pot odds come out to 200 / (600 + 200) = 25%. Your equity with 9 outs on the flop is 9 × 4 = 36%. Since 36% beats 25%, this is a profitable call with an 11 percentage-point edge.
Frequently asked questions about pot odds
What's the difference between pot odds and equity?
Pot odds are the price you're paying, expressed as a share of the pot — how often you need to win to break even. Equity is your actual chance of winning the hand, estimated from your outs. You compare the two to decide whether a call is profitable.
How accurate is the rule of 2 and 4?
The rule of 2 and 4 is an approximation that works well in most spots, but it gets slightly optimistic with a lot of outs (roughly above 8–9), since it doesn't account for the times you hit your card but still don't win the pot. For a more precise figure with a high out count, subtract 1 percentage point from the result for every out beyond eight.
Should I always call when equity beats pot odds?
Mathematically, yes — it's a break-even-or-better call based on the pot right now. In practice you should also weigh implied odds (extra money you can win on later streets if you hit), fold equity, and your opponent's tendencies before deciding, but pot odds versus equity is always a solid starting point.
