Compare your estimated equity with the price of a call. The tool runs 3,500 Monte Carlo trials against random opponent hands and shows your expected share of the pot, the break-even threshold, call EV and stack-to-pot ratio. It does not know an opponent’s betting range or model future betting. Here is a worked example you can also use without JavaScript.

Worked example · $100 already in the pot, including the opponent’s bet · $50 to call · assumed 30% equity
Break-even equity	50 / (100 + 50) = 33.3%
Expected value of calling	0.30 × (100 + 50) − 50 = −$5
Interpretation	Below the call threshold — 30% equity is less than 33.3%. With this equity, no rake and no further betting, calling loses $5 on average compared with folding.

How to use it

Enter your cards and the number of opponents to estimate showdown equity. Then enter the pot and the amount you must call to compare that equity with the price. The simulation assumes uniformly random opponent hands; it is an educational comparison, not a solver or a prediction of how a particular opponent will play.

Deal the cards

Pick a suit, then a rank. Enter both hole cards and either no community cards, all three flop cards, four turn cards or five river cards. The calculator waits if the flop is incomplete.

Set the table

Set the number of opponents, all money already in the pot including the bet you face, the additional amount you must call, and your remaining stack before calling. Use only a single pot you are fully eligible to win.

Check the numbers

Equity is your expected share of the pot, including splits. Pot odds is the equity required to break even on a call. EV is the average gain or loss from calling versus folding under the model. SPR is your stack divided by the current pot; it does not establish whether you are committed.

Compare the price

Green means above the call threshold against random hands; red means below; amber means close to the threshold or inputs need attention. Consider actual ranges, rake and later betting before making a poker decision.

Quick draw-completion reference

These are probabilities of hitting at least one of a fixed number of outs, rounded to one decimal place. The flop column assumes you see both remaining cards, with 47 unseen cards initially; the turn column uses one card from 46 unseen cards. The formulas are 1 − ((47 − outs) / 47) × ((46 − outs) / 46) and outs / 46. Draw completion is not necessarily your winning equity: some outs can improve an opponent, and you may already be ahead. If another bet is required on the turn, the two-card probability alone does not justify a flop call.

Outs	Typical drawing hand	On the flop (2 cards to come)	On the turn (1 card to come)
2	Pocket pair drawing to a set	8.4%	4.3%
3	One overcard to hit top pair	12.5%	6.5%
4	Gutshot straight draw	16.5%	8.7%
5	Pair drawing to two pair or trips	20.4%	10.9%
6	Two overcards	24.1%	13.0%
7	Seven clean outs (fixed-out example)	27.8%	15.2%
8	Open-ended straight draw	31.5%	17.4%
9	Flush draw	35.0%	19.6%
12	Flush draw + gutshot	45.0%	26.1%
15	Flush draw + open-ended straight (combo draw)	54.1%	32.6%

How the tool’s math works

The calculator samples legal deals from the remaining deck and evaluates each player’s best five-card hand. Its equity estimate is more specific than counting outs, but only within its random-hand model. Pot odds and call EV then use the amounts you enter and the same definition of the pot throughout.

Equity — estimated share of the pot

Changing cards or the opponent count runs 3,500 Monte Carlo trials. Each trial deals random legal opponent hands, completes the board and evaluates the best five cards for each player. An outright win contributes 1 to your pot share, a loss contributes 0, and a tie contributes 1 divided by the number of tied winners. For example, if ten players all play a royal flush on the board, your equity is 10%, although the tie frequency is 100%. Win, Tie and Lose show outcome frequencies; Equity averages your pot share. This is a sampled estimate, so results can vary between runs. Changing only the money inputs reuses the current equity estimate.

SPR — stack-to-pot context

The displayed ratio is your remaining stack before calling divided by the current pot, including the opponent’s bet. It is context only: a low ratio does not automatically commit you or make a call profitable. This tool has no opponent-stack inputs, so this display is not necessarily the effective-stack SPR commonly used for strategic analysis.

Pot odds — use the pot before your pending call

Let P be all money already in the pot, including the bet you face, and C be the additional amount you must call. Break-even equity is C / (P + C). Entering a $100 pot before an opponent bets $50 means the calculator’s pot input must be $150; calling $50 then requires 50 / 200 = 25%. If $100 is already the total including that bet, the same $50 call requires 50 / 150 = 33.3%. Do not add the opponent’s bet twice.

Call EV — count the call once

Expected value of calling, measured against folding, is equity × (P + C) − C. This accounts for both losing calls and the correct share of split pots. With $100 already in the pot, a $50 call and 30% equity, EV is 0.30 × 150 − 50 = −$5. This assumes you can win the whole entered pot, with no rake or further betting. Opponents who can still act may add money or raise, so the calculation is not a complete multiway decision model.

Reading the comparison

Green means estimated equity is above the break-even threshold in this model; red means it is below. Amber marks estimates within one percentage point of the threshold or inputs that need attention. This one-point band is a display convention, not a formal confidence interval. There is no hidden equity discount or inferred betting range. The tool does not prescribe raises, bet sizes or preflop opening ranges. If there is no amount to call, there is no call threshold to compare.

What the tool doesn't model

Opponent ranges and future action. Every opponent receives uniformly random legal hole cards. There is no adjustment for bets, position, skill or bluffing. Further bets, fold equity and implied or reverse implied odds are not modeled.

Rake and tournament value. Call EV ignores rake and is a chip or cash calculation, not tournament prize-money equity or ICM.

Side pots and short stacks. Use a single pot that you are fully eligible to win. The tool has no contribution history or opponent stacks and cannot divide side pots or identify unmatched bets. It blocks the comparison if the requested call exceeds your remaining stack; do not simply lower that call while leaving an ineligible pot amount unchanged.

Sampling uncertainty. The 3,500 trials give an estimate. Small differences near break-even should not be treated as reliable strategic edges.

Looking for the deeper guide? The Pot Odds Masterclass walks through the formula, MDF (minimum defense frequency), implied odds, bluff-frequency theory, and a six-question quiz. This page is the calculator; the masterclass is the textbook.

Pot Odds Calculator