Poker EV Calculator

How to use this Poker EV Calculator

What this calculator does

This calculator estimates the expected monetary value of one repeated poker decision from two possible outcomes: winning and losing. It applies the standard expected-value idea of weighting each outcome by its probability. The result is an average value per comparable decision over a large number of repetitions, not a forecast of what will happen in the next hand. For the underlying probability concept, Utah State University's explanation of expected value as a probability-weighted average gives the general statistical foundation.

When to use it

Use the calculator when reviewing a call, bet, or raise for which you already have a reasonable estimate of the chance of winning and the money won or lost in each outcome. It is also useful for studying historical hands, comparing two alternative lines with different payoffs, or checking how sensitive a decision is to a small change in estimated equity. It does not determine your hand equity for you, model opponent ranges, account for future betting automatically, or convert tournament chips into prize-money value.

How to calculate

1. The calculator opens with a complete demonstration: 40% Chance to win (PW), $150 Profit if you win (VW), 60% Chance to lose (PL), and $50 Loss if you lose (VL). The example result and Excel workbook are ready immediately.
2. Replace the four sample values with the assumptions for the decision you are studying. Results update live; no Calculate button is needed.
3. Read Expected value (EV) first, then use Weighted win value and Weighted loss value to see how each side of the formula contributes to the result.
4. Use the EV calculation breakdown table to audit the probability, outcome value, and weighted value for the win and lose rows.
5. Select Download Excel to export the current validated inputs and canonical results to an XLSX workbook. Reset clears the demonstration values and results; Excel export stays disabled until a complete valid state is entered again.

Input guide

Chance to win (PW) is a required percentage from 0 to 100. Enter a plain number such as 40 or 42.5; the percent symbol is supplied by the interface. A larger PW increases EV when Profit if you win is positive. Do not enter decimal probability 0.40 when you mean 40%.

Profit if you win (VW) is a required nonnegative dollar amount. Enter the net profit associated with the winning outcome, such as 150. In a basic call model, think in terms of the profit gained from winning rather than blindly entering the final pot total. Raising VW increases the weighted win value and therefore EV.

Chance to lose (PL) is a required percentage from 0 to 100, for example 60. Raising PL increases the expected drag from the losing outcome. In a simple two-outcome model PW and PL normally total 100%. If they do not, the calculator shows a warning but still evaluates the exact probabilities you entered, which can be useful when deliberately modeling only selected outcomes.

Loss if you lose (VL) is a required nonnegative dollar amount, for example 50. It represents the amount sacrificed when the play loses. A larger VL makes EV lower. Enter the loss as a positive magnitude; the calculator applies the minus sign in the formula.

Output guide

Expected value (EV) is the net probability-weighted dollar value per comparable play. Positive EV means the assumptions imply a long-run average gain; negative EV means a long-run average loss; zero is break-even. Weighted win value is PW × VW and shows the positive contribution from wins. Weighted loss value is PL × VL and shows the magnitude of the losing contribution before subtraction. The live summary pills repeat EV and the two entered probabilities for quick scanning. In the breakdown table, Probability and Outcome value restate the model inputs, while Weighted value shows each probability-adjusted contribution. These are mathematical estimates based on your inputs, not a guarantee of poker results.

Worked example

With the startup example, PW = 40% = 0.40 and VW = $150, so the weighted win value is 0.40 × $150 = $60. PL = 60% = 0.60 and VL = $50, so the weighted loss value is 0.60 × $50 = $30. The calculator subtracts the loss contribution from the win contribution: $60 – $30 = +$30.00 EV. That means the model assigns an average value of thirty dollars to each repetition of an equivalent decision under the same probabilities and payoffs.

Learn more

For poker-specific context, Upswing Poker's guide to expected value in poker decisions explains why EV is a long-run decision metric rather than a promise about one result. When comparing equity with the price of a call, its guide to poker math and pot odds is a useful companion.