Gemmy Tuệ An · Tools
Equity Calculator
Compare hand vs hand or hand vs range equity in any preflop, flop, or turn situation.
What equity is, and how to read the number
Equity is the share of the pot that belongs to you if the hand were run out to the river right now, expressed as a probability. A hand with 65% equity wins 65 times out of 100 identical repetitions. On its own the number does not tell you to call or fold — it is one half of a comparison, and the other half is the price the pot is offering you.
In practice you compare equity against pot odds. If the pot holds 100 and you must call 50, you need roughly 25% equity to break even. At 35% the call is profitable over the long run, even on the occasions this particular hand loses. This is the easiest thing to misread: correct equity does not guarantee a correct-looking result in any single hand, only that you come out ahead if the spot repeats often enough.
Range versus range is far more useful than hand versus hand. Opponents rarely hold one specific hand; they hold a set of them. Your AK is around 70% against AQ but drops to roughly 40% against a 4-bet range that includes the big pairs. If you have only ever calculated hand versus hand, you are almost certainly overrating your holdings.
One last caveat: flop equity and the real value of a hand are different things. A draw with 35% equity is worth more than the raw number suggests when your opponent will pay you off after you hit. Conversely, high equity on a board where you cannot keep applying pressure is hard to convert into chips.
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Frequently asked questions
Does this calculator require an account?
No. The calculation runs in your browser, no hands are stored and no signup is needed.
How much equity do I need to call?
There is no fixed threshold — it depends on pot odds. Divide the amount you must call by the total pot after calling to get your break-even equity. If your equity is higher than that figure, the call is profitable long term.
Why calculate range vs range instead of hand vs hand?
Because an opponent is never limited to one hand. Assigning a range that reflects everything they could play this way gives a number that is usually far lower than the one you get by picking a single hand for them.
Does this work for tournament poker?
It works for the win probability itself, but tournaments need an ICM adjustment on top. Near the bubble, chips won are worth less than chips lost, so your calling threshold has to be higher than raw equity. Check big decisions against the ICM Calculator.