Poker Overbet Chart
How often does an oversized bet need to work, and what price does it lay the caller? This poker overbet chart covers folds needed, minimum defense frequency, the caller's required equity, and the balanced bluff-to-value ratio for pot through 3× pot. Use it with the fold equity chart, the MDF chart, and the bluff-to-value ratio, or plug a spot into the free bluff calculator.
Poker overbet chart: folds, MDF, caller equity, and ratio
| Overbet (of pot) | Folds needed (pure bluff) | Defender's MDF | Caller's required equity | Bluffs : value | Bet into a $100 pot |
|---|---|---|---|---|---|
| 100% (pot) | 50% | 50% | 33.3% | 1:2 | $100 |
| 125% | 55.6% | 44.4% | 35.7% | 5:9 | $125 |
| 150% | 60% | 40% | 37.5% | 3:5 | $150 |
| 175% | 63.6% | 36.4% | 38.9% | 7:11 | $175 |
| 200% (2× pot) | 66.7% | 33.3% | 40% | 2:3 | $200 |
| 250% | 71.4% | 28.6% | 41.7% | 5:7 | $250 |
| 300% (3× pot) | 75% | 25% | 42.9% | 3:4 | $300 |
Folds needed = bet ÷ (pot + bet). MDF = pot ÷ (pot + bet). Caller's equity = bet ÷ (pot + 2 × bet). Bluffs : value = bet : (pot + bet), simplified. Pure-bluff / polarized-river assumptions, heads-up.
The formulas
Overbets use the same break-even math as smaller sizes — only the fraction of pot changes:
Folds needed = bet ÷ (pot + bet)
MDF = pot ÷ (pot + bet)
Caller's equity = bet ÷ (pot + 2 × bet)
Bluffs : value = bet : (pot + bet)
Folds needed and MDF always sum to 100%. A bigger overbet demands more folds from a pure bluff, but it also drops the defender's continue frequency and worsens the caller's pot odds. Polarized ranges prefer oversized bets because the size supports a higher bluff share before calling becomes auto-profitable: 1:2 at pot, 2:3 at 2× pot, 3:4 at 3× pot.
Worked example: $100 pot, $200 overbet (2×)
The pot is $100 and you overbet $200, twice the pot.
- Folds needed (pure bluff): 200 ÷ 300 = 66.7%. Two folds in three for air to break even.
- Defender's MDF: 100 ÷ 300 = 33.3%. He only needs to continue with a third of his range.
- Caller's required equity: 200 ÷ 500 = 40%. He calls $200 to win $300.
- Balanced bluffs : value: 2:3 — two bluffs for every three value hands.
- Check: 66.7% + 33.3% = 100%.
If he folds more than two-thirds, every pure 2× bluff prints. If he calls more, cut bluffs and lean into value. Try the calculator preloaded for a $200 overbet.
Second example: $100 pot, $150 (1.5×)
Same pot, a 1.5× overbet of $150. Folds needed = 150 ÷ 250 = 60%. MDF = 40%. Caller needs 150 ÷ 400 = 37.5%. Balanced ratio = 3:5. Easier fold target than 2× pot with a milder price — a common "big but not huge" river size.
When overbets work
Polarized ranges. Nuts (or close) or nothing. Medium hands check or bet smaller; overbets are for stack-off value and bluffs that block continuing hands.
Nut advantage. When you hold most of the straights, flushes, and sets, medium pairs cannot happily call 2× pot — value gets paid and blocked bluffs get folds.
Blocking. Holding the ace of the flush suit or a key straight card removes calling combos and pushes the real fold rate toward (or above) break-even.
When overbets fail
Merged ranges. Top pair and thin value get called by better and fold out worse — reverse implied odds of overbetting medium hands.
Calling stations. Players who "need to see it" fold far less than 60–67%. Overbet bluffs are expensive gifts; overbet for value only.
Multiway pots. Everyone must fold. Two opponents each folding 50% leave the bluff winning only 25%, so a 2× overbet is usually a non-starter multiway.
How this page fits the others
The fold equity chart and MDF chart cover 25% pot upward; this page zooms in on oversized bets and adds caller equity plus bluff-to-value in one table. See also the bluff-to-value ratio page, or the free bluff calculator for a specific spot.
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See it on Amazon →Overbet FAQ
What is an overbet in poker?
An overbet is a bet larger than the pot — typically 125% to 300% of pot. Oversized bets need more folds to break even as pure bluffs, but they also give the caller worse pot odds and let a polarized range include more bluffs relative to value.
How often does a 2× pot overbet need to work?
66.7% of the time as a pure bluff. You risk $200 to win a $100 pot, so folds needed = 200 ÷ 300 = 66.7%. The defender's MDF is the complement: 33.3%.
What equity does a caller need against a 2× overbet?
40%. Facing a $200 bet into $100, he calls $200 to win $300, so equity needed = 200 ÷ (100 + 200 + 200) = 200 ÷ 500 = 40%.
When should you overbet?
When your range is polarized (nuts or air), you have a nut advantage, and you block the hands that continue. Overbets punish medium-strength holdings that can call smaller sizes. They fail against merged ranges and calling stations who never fold.
How do overbets relate to fold equity and MDF?
Same formulas, bigger sizes. Folds needed = bet ÷ (pot + bet); MDF = pot ÷ (pot + bet). They always add to 100%. See the fold equity chart and MDF chart for the full size ladder including underbets.