Tools · Odds

Poker Pot Odds Calculator

Use this free poker pot odds calculator to find required equity and effective odds instantly. Check worked examples and an outs chart for draw decisions.

Current Pot Size

Bet Amount(0% pot)

Result

Required call amount—

Odds— : 1

Required equity—

A call is justified if your equity is above this threshold

How to use

Enter the current pot size.
Set the opponent's bet (or raise) size as a percentage of the pot or as an amount.
The calculator shows required equity and effective odds. Compare required equity with your equity to decide whether to call.

Rule of 2 & 4 (outs estimate)

One card to come (turn): outs × 2 ≈ hit rate. Example: flush draw 9 outs → ~18%.
Two cards to come (flop to river): outs × 4 ≈ hit rate. Example: 9 outs → ~36%.
This is an approximation. Use the equity calculator for exact equity.

Decision tips

Required equity is the break-even line for this call. Opponent range and implied odds are separate factors.
Against a raise, use the additional amount to call and the final pot (raise mode in the calculator).
Calculation runs entirely in your browser. Numbers you enter are not sent to the server.

How to Calculate Pot Odds

Pot odds turn the price of a call into the minimum equity your hand needs. Divide the call amount by the final pot after calling (required equity = call amount ÷ final pot). Compare that percentage with your estimated equity to find the break-even point.

Example 1: Half-pot bet

The pot is $100 and your opponent bets $50. You call $50 to win a final pot of $200, so you need 25% equity. A flush draw on the turn has about a 19.1% chance to complete on the river, so immediate pot odds alone don't justify the call.

Example 2: Quarter-pot bet

The pot is $100 and your opponent bets $25. Calling $25 makes the final pot $150, so you need 16.7% equity. A clean nine-out flush draw has about 19.1% equity with one card to come, which clears the break-even point.

Poker Outs and Draw Odds Chart

These exact probabilities assume every listed out wins the hand. The Rule of 2 & 4 is a fast table estimate; discount outs that can complete a better hand for your opponent.

Draw	Outs	1 cardOne card to come	2 cardsTwo cards to come
Flush draw	9	19.1%	35.0%
Open-ended straight draw	8	17.0%	31.5%
Gutshot straight draw	4	8.5%	16.5%

Required equity by bet size

Required equity to call each common bet size. Required equity = call / (pot + bet + call).

Bet size	Pot odds	Required equity
1/3 pot	4 : 1	20%
1/2 pot	3 : 1	25%
2/3 pot	5 : 2	28.6%
Pot	2 : 1	33.3%
1.5x pot	5 : 3	37.5%
2x pot	3 : 2	40%

For an exact hand-vs-hand result, use the free equity calculator to find your actual equity and compare it with the required equity above.

Use the free poker equity calculator View GTO preflop range charts

Compare required equity with ranges and win rates

After you know the required win rate, check the hand-versus-hand equity and the preflop range for that seat.

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FAQ

Is the pot odds calculator free?: Yes. This pot odds calculator is free and works without an account.
What is the difference between pot odds and equity?: Pot odds show the minimum equity needed to call; equity is your actual chance to win. If your equity is higher, calling may be profitable.
What are implied odds?: Odds that include extra money you can win after your draw hits. Use them when future bets matter beyond the current pot.
Can I calculate odds against a raise?: Yes. Switch bet type to raise and enter the opponent's raise size.
How do you calculate pot odds in poker?: Divide the amount you must call by the final pot after your call. For example, if the pot is $100 and an opponent bets $50, calling $50 creates a $200 final pot. The required equity is $50 ÷ $200 = 25%.
Should I call with a flush draw?: A nine-out flush draw hits about 19.1% of the time with one card to come and 35.0% with two cards to come. Compare that estimate with the calculator's required equity, then account for whether your outs are clean and whether future betting remains.

Poker Outs and Draw Odds Chart

These exact probabilities assume every listed out wins the hand. The Rule of 2 & 4 is a fast table estimate; discount outs that can complete a better hand for your opponent.

Draw	Outs	1 cardOne card to come	2 cardsTwo cards to come
Flush draw	9	19.1%	35.0%
Open-ended straight draw	8	17.0%	31.5%
Gutshot straight draw	4	8.5%	16.5%

Bet size

Pot odds

Required equity

1/3 pot

4 : 1

20%

1/2 pot

3 : 1

25%

2/3 pot

5 : 2

28.6%

Pot

2 : 1

33.3%

1.5x pot

5 : 3

37.5%

2x pot

3 : 2

40%

FAQ

Is the pot odds calculator free?

Yes. This pot odds calculator is free and works without an account.

What is the difference between pot odds and equity?

Pot odds show the minimum equity needed to call; equity is your actual chance to win. If your equity is higher, calling may be profitable.

What are implied odds?

Odds that include extra money you can win after your draw hits. Use them when future bets matter beyond the current pot.

Can I calculate odds against a raise?

Yes. Switch bet type to raise and enter the opponent's raise size.

How do you calculate pot odds in poker?

Divide the amount you must call by the final pot after your call. For example, if the pot is $100 and an opponent bets $50, calling $50 creates a $200 final pot. The required equity is $50 ÷ $200 = 25%.

Should I call with a flush draw?

A nine-out flush draw hits about 19.1% of the time with one card to come and 35.0% with two cards to come. Compare that estimate with the calculator's required equity, then account for whether your outs are clean and whether future betting remains.