Poker Fold Equity Calculator
Calculate fold equity and determine if bluffs and semi-bluffs are profitable
Formula:EV = (Fold% × Pot) + (Call% × Equity × Total Pot) - (Call% × (1-Equity) × Bet) - Bet
Fold Equity Calculator
Evaluate bluffs and semi-bluffs
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How often you expect opponent to fold
%
0% for pure bluffs, higher for semi-bluffs
-EV Bluff
This bet loses money long-term
Expected Value
-$63
Break-even: 42.9% folds needed
You estimated: 50% folds
EV Breakdown
When opponent folds (50%)+$50
When called & you lose (50.0%)-$38
Your bet investment-$75
Net EV-$63
Fold Frequency Analysis
Break-even Fold%42.9%
Estimated Fold%50%
Expected Value
-$63
Break-even
42.9%
Fold Equity
$50
Bet/Pot Ratio
75%
Unprofitable bluff. You need 42.9% folds but only expect 50%. Consider a smaller bet size or pick a better spot.
Try These Examples
Common bluff and semi-bluff scenarios
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How Fold Equity Works
Understanding bluff profitability
Example: Semi-Bluff with Flush Draw
- 1. Situation: Pot is $100, you bet $75
- 2. Your draw: Flush draw = ~35% equity when called
- 3. Estimate: Opponent folds 40% of the time
- 4. Fold EV: 0.40 × $100 = $40
- 5. Call EV (win): 0.60 × 0.35 × $250 = $52.5
- 6. Call EV (lose): 0.60 × 0.65 × $75 = -$29.25
- 7. Total EV: $40 + $52.5 - $29.25 - $75 = -$11.75
- 8. Result: -EV in this case, need higher fold% or more equity
Quick Answer
TL;DR summary
Fold equity is the value gained when opponents fold to your bet. Formula: Fold Equity = Fold% × Pot. If you bet $100 into a $100 pot and opponent folds 60% of the time, your fold equity is 0.60 × $100 = $60. Combined with your equity when called, this determines if a bluff is profitable. Break-even fold frequency = Bet Size ÷ (Pot + Bet).
Key Facts About Fold Equity
Important things to know
- Fold equity = expected value from opponents folding
- Formula: FE = Fold Frequency × Current Pot
- Break-even fold% = Bet / (Pot + Bet)
- Example: $50 bet into $100 pot needs 33% folds to break even
- Semi-bluffs combine fold equity + equity when called
- Pure bluffs rely entirely on fold equity
- Fold equity makes aggression profitable in poker
- Consider opponent tendencies when estimating fold frequency
Frequently Asked Questions
Common questions about fold equity
What is fold equity in poker?
Fold equity is the portion of your expected value that comes from opponents folding to your bet. If you bet $100 into a $100 pot and opponents fold 50% of the time, you win $100 half the time just from folds. This is fold equity of $50.
How do I calculate break-even fold frequency?
Break-even fold% = Bet Size ÷ (Pot + Bet). For a $50 bet into a $100 pot: $50 ÷ $150 = 33.3%. If opponents fold more than 33.3%, your bluff is immediately profitable regardless of your cards.
What is a semi-bluff?
A semi-bluff is a bet with a drawing hand that can win if called (via improvement) or if opponents fold. You have both equity when called and fold equity. Example: Betting a flush draw - you can win by hitting the flush OR by making them fold.
When should I use fold equity?
Use fold equity calculations for: (1) Deciding whether to bluff, (2) Sizing your bluffs optimally, (3) Evaluating semi-bluffs with drawing hands, (4) Understanding when aggressive plays are +EV even with weak hands.
How do I estimate opponent fold frequency?
Consider: (1) Opponent's range - weaker ranges fold more, (2) Position - late position folds more to aggression, (3) Stack sizes - short stacks commit lighter, (4) Board texture - scary boards get more folds, (5) Player type - tight players fold more than calling stations.
How this works
Calculations follow the published mathematics of the game — combinatorics for cards, probability theory for dice, and expected-value accounting for wagers. Results are verified against independent references (primarily Wizard of Odds). No calculation here is an opinion or recommendation; it is arithmetic applied to the rules of the game.
What this tool can’t do
When to consult a professional
This tool computes probability and expected value. It is not a betting system and cannot predict the outcome of any individual wager. If gambling is causing problems for you or someone you know, call the National Problem Gambling Helpline at 1-800-GAMBLER.
Sources
- [1]Wizard of Odds — Michael Shackleford, ASAIndustrywizardofodds.comAccessed Apr 21, 2026
Actuary; widely cited casino-game probability reference. Used for house-edge and EV verification.
- [2]National Council on Problem GamblingOfficial sourcencpgambling.orgAccessed Apr 21, 2026
Responsible-gambling guidance and 1-800-GAMBLER helpline.
Joseph OrdunaFounder & Software Engineer
Full-stack software engineer specializing in embedded systems, web architecture, and AI/ML. Founder of Practical Web Tools. Built the gesture-controlled drone IP acquired by KD Interactive (Aura Drone, sold on Amazon).