Equity
胜率（Equity）
Equity is the percentage share of the pot that belongs to you based on the mathematical probability of your hand winning against an opponent's range. It changes with every community card dealt and is the foundation of all poker math. Equity can be calculated using the rule of 2 and 4 for quick estimates, or precisely using poker equity calculators.
Example
With a flush draw on the flop, you have approximately 35% equity against a top-pair hand.
Related Terms
More Math & Odds Terms
Pot Odds
The ratio of the current pot size to the cost of a contemplated call.
Expected Value (EV)
The average amount you expect to win or lose from a decision over the long run.
Outs
Cards that will improve your hand to a likely winner.
Implied Odds
Pot odds adjusted for the additional money you expect to win on future streets.
Fold Equity
The probability that your opponent will fold to your bet or raise.
SPR (Stack-to-Pot Ratio)
The ratio of the effective stack size to the current pot size.