Poker pot odds: how to work out whether a call is profitable

There are 100 chips in the pot and your opponent bets 50. What equity do you need to call? If you thought 50%, this exercise will help you separate the bet size from the price of a call.

What are pot odds?

Pot odds compare the amount you must call with the pot you can win. They let you calculate the minimum equity for a call to have zero expected value relative to folding, assuming no further betting and no rake.

Required equity = call amount / total pot after your call × 100.

Equity is your average share of the pot against your opponent’s range, including ties. Pot odds give you the threshold; they do not tell you how much equity your hand actually has.

Exercise: a pot of 100 and a bet of 50

🎯 Pot before the bet: 100.

🎯 Opponent’s bet: 50.

🎯 Your call: 50.

🎯 Final pot if you call: 200.

Before reading on, work out what fraction of the final pot your call represents.

Solution

50 / (100 + 50 + 50) = 25%.

You need 25% equity to break even. Above 25%, calling wins chips on average under these assumptions; below it, calling loses chips. This calculation is especially straightforward when facing an all-in with no further betting.

Check with 30% equity: call EV = 0.30 × 200 − 50 = +10 chips. Chips invested earlier are already in the pot: do not add them again to the cost of this decision.

Three bet sizes to recognise

Half pot: 25%

Two-thirds pot: 28.6%

Pot Bet: 33.3%

These figures assume one opponent, no rake and no further betting. A half-pot bet does not require 50% equity: include both the opponent’s bet and your call in the denominator.

The mistake of counting two cards when you only pay for one

On the flop, a flush draw with nine clean outs has roughly a 35% chance of completing by the river. But that percentage does not automatically justify calling when your opponent can bet again on the turn.

The chance of completing on the next card is approximately 9 / 47 = 19.1%. Completing a flush does not always guarantee winning, either. Distinguish between your chance of improving, equity against the opponent’s range and the equity you can actually realise.

From calculation to decision

When more betting remains, position, implied odds, reverse implied odds and your opponent’s possible actions also matter. In tournaments, ICM can mean that winning chips and maximising prize equity require different decisions. Pot odds provide a basis for analysing a hand, not an automatic instruction to call.

Your turn to practise

The pot is 120 and your opponent bets 90. What equity do you need?

Answer: 90 / (120 + 90 + 90) = 30%.

To practise the calculation, change the bet sizes and repeat: identify the call, build the final pot and divide. Explore the exercises on Tools of Poker to keep practising poker concepts.