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Equity in poker is your share of the pot: the percentage of the time your hand wins if every remaining card is dealt and nobody folds. Pocket aces have roughly 82% equity against pocket kings preflop, so AA wins about 82 times out of 100 (see Poker probability on Wikipedia). Equity changes on every street as the board comes out, and pot odds, expected value and GTO decisions are all built on it. Use the calculator above to get exact equity for any hand vs hand, hand vs range or range vs range matchup.

How to use this calculator

Pick a mode for each player. Exact means two specific hole cards. Range lets you select a weighted set of hands with the 13×13 matrix, the Top % slider or a preset like EP open or BB defend. Random uses all 1,326 combos, which is what you want when you have no read on villain at all.

Add a flop, turn or river to see how equity moves street by street. The equity-over-streets graph shows you where a strong flop loses value on a blank turn, a spot many players never check.

Pot odds and outs

Once you know your equity, compare it with the pot odds you are getting. If villain bets half pot, you call 0.5 into a final pot of 2 (the pot, his bet and your call), so you need 0.5 / 2 = 25% equity to call. With a flush draw on the turn you have 9 outs among 46 unseen cards, so you hit on the river 9 / 46 ≈ 20% of the time. You need a price that matches. Put equity, pot odds and outs together and you have the maths behind every postflop call.

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