The Formula — EV in 30 Seconds
EV = (win chance × amount won) − (lose chance × amount lost)
If EV is positive — the decision profits over time. If negative — it loses. That simple.
Expected Value (EV) is the mathematical estimate of profit or loss for a given decision, over the thousands of times it will be made. A good player doesn't ask "did I win or lose this hand?" — they ask "was my decision +EV or −EV?". This guide gives you the tools to start thinking in EV terms today.
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EV = (win chance × amount won) − (lose chance × amount lost)
If EV is positive — the decision profits over time. If negative — it loses. That simple.
You have AKs. Opponent shoves 100. You estimate they go with QQ+ and AK — a range giving you 43% equity. Pot already has 20 blinds.
EV = (0.43 × 220) − (0.57 × 100) = 94.6 − 57 = +37.6. Positive — call.
Pot 100. Opponent bets 50 on flop. You have Flush Draw (9 outs, ~35% to hit by river).
EV = (0.35 × 150) − (0.65 × 50) = 52.5 − 32.5 = +20. Positive — stay in.
You could shove +EV with 80% equity and lose. Happens 20% of the time. Doesn\'t mean the decision was wrong — it was the best possible.
A good player judges themselves by decision quality, not short-term results. After 10,000 hands, EV converges with actual profit.
Go on to: pot odds and GTO. Practice EV live at ClubGG Israel.
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