--- title: "Call or Fold: 13 Outs vs 1/2 pot, Flop" url: "https://georgelipoker.com/call-or-fold/13-outs-flop-vs-half-pot.md" canonical_url: "https://georgelipoker.com/call-or-fold/13-outs-flop-vs-half-pot" last_updated: "2026-10-21" type: "reference" summary: "Is a call right with 13 outs on the flop against a half-pot bet? Chance 48.10%, price 25.00%, so call." related: ["https://georgelipoker.com/call-or-fold.md"] --- # Call or Fold: 13 Outs vs 1/2 pot, Flop Is a call right with 13 outs on the flop against a half-pot bet? Chance 48.10%, price 25.00%, so call. Facing a half-pot bet on the flop with 13 outs, the call is correct: 48.10% to hit against 25.00% needed. - Verdict: Call (13 outs, flop, half-pot bet) - Chance to hit by the river: 48.10% (two cards to come) - Equity the call needs: 25.00% ($50 into a pot of $200) - Margin over the price: +23.10 points (your chance minus the price) ## Reading the verdict With 13 outs on the flop you hit 48.10% of the time by the river, and a half-pot bet only asks for 25.00%. That 23.10-point cushion makes this a clear call. Think of 13 outs as a running total of every card that improves you. 13 of the 47 unseen cards qualify, which is 27.66% on one card. ## Putting dollars on the call - Pot when the bet arrives: $100 - The bet: $50 - Your call: $50 - Pot after your call: $200 - You can win on a hit: $150 - You lose on a miss: $50 - Probability of a hit: 48.10% - Expected value of a call: +$46.21 - Break-even equity: 25.00% - Margin, to four decimals: +23.1036 points - Outs that exactly reach the price: 6.23 outs - Outs above the price: +6.77 outs Suppose a hit wins the entire pot, a miss loses your call, and no more betting follows. The average gain is $72.16, the average loss is $25.95, and calling gains $46.21 on average, or +0.924 per dollar called. Odds say the same thing. Hitting is 1.08 : 1 against, and the pot lays 3 : 1. One easy error is to use 33.33%, the bet over the pot before your call, as the price. The right price is 25.00%, and the mistaken margin would be +14.7703 points. The bet over the starting pot, 50.00%, would claim -1.8964 points. ## Reverse implied odds and your margin The fewest outs that still call a half-pot bet on the flop is 7. You hold 13, so you have 6 outs to spare before the call flips to a fold. Price of a half-pot call if you give money back after a hit, 13 outs on the flop | Given back later | Price with it | Your chance minus price | Value of the call | Call? | | --- | --- | --- | --- | --- | | $0 | 25.00% | +23.10 points | +$46.21 | Call | | $10 | 26.32% | +21.79 points | +$41.40 | Call | | $25 | 28.57% | +19.53 points | +$34.18 | Call | | $50 | 33.33% | +14.77 points | +$22.16 | Call | | $100 | 50.00% | -1.90 points | -$1.90 | Fold | If hitting means paying off a bigger hand later, the call survives a loss of $96.06. That is 1.92 times the $50 call. ## One card or two 13 outs against a half-pot bet, one view per row | Cards counted | Chance | Margin over price | Value of the call | Verdict | | --- | --- | --- | --- | --- | | By the river, two cards | 48.10% | +23.1036 points | +$46.21 | Call | | Next card only | 27.66% | +2.6596 points | +$5.32 | Call | No conflict here: 48.10% for two cards and 27.66% for one both give a call against the 25.00% price, so you need not decide which view applies. ## Counts close to yours Draws close to yours, on the same street and against the same bet: the price is fixed at 25.00%, and each out moves the chance about 3.05 points. Outs 11 to 15 on the flop against a half-pot bet | Outs | By the river | Margin | Verdict | | --- | --- | --- | --- | | [11 outs](https://georgelipoker.com/call-or-fold/11-outs-flop-vs-half-pot.md) | 41.72% | +16.72 points | Call | | [12 outs](https://georgelipoker.com/call-or-fold/12-outs-flop-vs-half-pot.md) | 44.96% | +19.96 points | Call | | 13 outs, this page | 48.10% | +23.10 points | Call | | [14 outs](https://georgelipoker.com/call-or-fold/14-outs-flop-vs-half-pot.md) | 51.16% | +26.16 points | Call | | [15 outs](https://georgelipoker.com/call-or-fold/15-outs-flop-vs-half-pot.md) | 54.12% | +29.12 points | Call | ## Changing the bet, keeping the draw Look down the margin column to see where the draw stops paying. Every row uses 13 outs on the flop and a bet of a different size. 13 outs on the flop against every bet size | Bet size | Equity needed | Margin | Verdict | | --- | --- | --- | --- | | quarter-pot | 16.67% | +31.44 points | Call | | [third-pot](https://georgelipoker.com/call-or-fold/13-outs-flop-vs-third-pot.md) | 20.00% | +28.10 points | Call | | two-fifths-pot | 22.22% | +25.88 points | Call | | half-pot, this page | 25.00% | +23.10 points | Call | | [two-thirds-pot](https://georgelipoker.com/call-or-fold/13-outs-flop-vs-two-thirds-pot.md) | 28.57% | +19.53 points | Call | | [three-quarter-pot](https://georgelipoker.com/call-or-fold/13-outs-flop-vs-three-quarter-pot.md) | 30.00% | +18.10 points | Call | | [pot-size](https://georgelipoker.com/call-or-fold/13-outs-flop-vs-pot-size.md) | 33.33% | +14.77 points | Call | | 1.25x-pot | 35.71% | +12.39 points | Call | | 1.5x-pot | 37.50% | +10.60 points | Call | | 2x-pot | 40.00% | +8.10 points | Call | | 3x-pot | 42.86% | +5.25 points | Call | | 4x-pot | 44.44% | +3.66 points | Call | The call holds at every one of the 12 sizes. 48.10% is higher than the price of even the largest bet. ## Keep exploring - [13 outs on the flop](https://georgelipoker.com/outs/13-outs-flop.md) - [Pot odds for a half-pot bet](https://georgelipoker.com/pot-odds/half-pot.md) - [Pot odds calculator](https://georgelipoker.com/tools/pot-odds-calculator.md) - [Outs calculator](https://georgelipoker.com/tools/outs-calculator.md) - [Call or fold with a draw](https://georgelipoker.com/call-or-fold.md) ## Questions ### Does the math favor calling a half-pot bet with 13 outs on the flop? The verdict is call. Your chance is 48.10% and the price is 25.00%, which leaves +23.10 points. On a $100 pot with a $50 bet, calling is worth +$46.21 on average if the whole pot is won on a hit and nothing more is bet. ### What is the minimum number of outs for a half-pot bet on the flop? Against 25.00%, the first count that works on the flop is 7, at 27.84%. At 6 the chance is 24.14%, too low. Compared with that threshold, your 13 outs are 6 above. ### Which chance should you compare with the price, the next card or the river? Match the number to the betting: 48.10% if all-in or checked down, 27.66% if you face another bet on the turn. The price is 25.00%, and both numbers agree on call. ## How this is computed The hit chance comes straight from combinations. Out of 1,081 pairs of unseen cards, 561 miss every out, so you hit 48.10% of the time. The numbers are a baseline rather than a prediction for one hand. The price is 25.00%, from $50 into $200, and the chance assumes a whole pot won on a hit, no more betting, 47 equally likely unseen cards, and no cards removed for the other player. Computed from the closed form by the GeorgeLiPoker math library. ## Related pages - [13 outs on the flop](https://georgelipoker.com/outs/13-outs-flop.md) - [Pot odds for a half-pot bet](https://georgelipoker.com/pot-odds/half-pot.md) - [Pot odds calculator](https://georgelipoker.com/tools/pot-odds-calculator.md) - [Outs calculator](https://georgelipoker.com/tools/outs-calculator.md) - [Call or fold with a draw](https://georgelipoker.com/call-or-fold.md) ## Related - [Call or Fold With a Draw by Bet Size](https://georgelipoker.com/call-or-fold.md)