How We Calculate Your Odds

1 What equity actually means

Equity is your share of the pot if the hand were played to the end many times over. If you have 62% equity, then across every possible way the remaining cards could fall, you win (or split) enough of them to claim 62% of the chips on average. It is not a guess about this one hand. It is the exact long-run share, given what is known right now.

That definition points straight at the method. To find your share, you look at every way the hand can finish and see how often each player ends up with the best hand. The only question is whether we can check every outcome directly, or whether there are too many to count.

2 Counting versus simulating

There are two honest ways to compute equity, and we use whichever one fits the situation. When only a few cards are unknown, we count every possible finish and report the exact answer. When many cards are unknown, counting them all would be slow, so we simulate a large number of random finishes and measure the share. One method is exact, the other is a very close estimate.

The dividing line is simply how many cards are still to come, and it lines up neatly with the streets of a hand.

Preflop

Five community cards unknown. Too many to count, so we simulate.

Flop

Two cards to come. We count every turn and river pair. Exact.

Turn

One card to come. We count every river. Exact.

River

Nothing left to come. We just compare the hands. Exact.

3 Exact after the flop

Once the flop is out, at most two cards are still to come. That is a small enough number that we can walk through every possible turn and river, score each player's best hand on each one, and tally the results. On the flop that is around a thousand possible boards. On the turn it is under fifty. On the river there is nothing left to deal, so we simply read the hands.

Because we check every remaining card rather than a sample, the postflop number is not an estimate. It is the true equity, down to the decimal. Two players holding the same cards on the same board will always see the same exact figures.

4 Simulated, but stable, preflop

Before the flop, five community cards are unknown. Checking every combination is possible but slow, so preflop we run a large simulation instead: we deal thousands of random complete boards, score the hands on each, and average the results. With that many runs, the number settles to within a fraction of a percent of the true value.

Here is the part most calculators get wrong. A naive simulation uses fresh random numbers each time, so the same hand shows 61% on one visit and 62% on the next. Ours does not. The simulation is seeded from the exact cards you entered, which means the same hand always deals the same set of runouts and always shows the same number. Stable, repeatable, no jitter.

5 Split pots count fairly

Equity is your share of the pot, and shares include ties. When a runout splits the pot two ways, each player earns half of it. Our calculator credits that half directly, so a chopped result adds to your equity exactly as it should.

This matters more than it sounds. Consider two players who both hold a low pair and end up playing the five community cards for a straight. Neither wins outright, yet each is entitled to half the pot. A calculator that only counts outright wins would show them at 0%. Ours shows 50% each, because that is the real equity.

6 Omaha and Omaha Hi-Lo

Other games use the same counting and simulation, with one rule change for the hand itself. In Omaha you are dealt four cards, but you must use exactly two of them plus exactly three community cards. That single rule trips up a lot of software. Three cards of the same suit in your hand do not make a flush, because only two of them can ever play. Our evaluator checks every valid two-plus-three combination and takes the best, so it never awards a hand you cannot actually make.

Omaha Hi-Lo splits each pot between the best high hand and the best qualifying low hand, where a low needs five different ranks all eight or lower. We score both halves on every runout: half the pot follows the high, half follows the low, and when no low qualifies the high hand takes it all. Quartering, where you scoop one half but tie the other, comes out of the same math automatically. The calculator shows your total share and breaks it into the high and low pieces.

7 How we know it is right

A calculator is only as good as its hand evaluator, so we do not trust ours on its own word. Every result is checked against an independent, widely used poker solver across thousands of test hands covering ordinary spots and the tricky edge cases: wheel straights, counterfeited two pair, the Omaha two-card rule, low-hand ties, and more.

Those checks are automated. Every time we change the code, the full suite reruns and has to pass before anything ships, including a check that recomputes the reference odds shown across the app so the published numbers can never quietly fall out of date. If you want to see how our range charts are built on top of this equity engine, the range chart page has its own methodology note.