Free tool · house edge

Session cost calculator

See what a session costs on average, game by game, from the house edge, your stake and how fast you play. Compare blackjack, roulette, baccarat, video poker and slots.

£

Filled in with a typical pace for the game. Live tables are slower than online slots.

hours
Average cost of the session
£1.35

Total staked£50
Cost per hour£1.35
This is the average over many sessions. Any single session can end well up or well down. The bigger the game’s swings, the wider the range.

Same stake, same hour: game by game

At your stake, for one hour at each game’s typical pace:

GameHouse edgeBets an hourAverage cost

How it works

Average cost = total staked × house edge. A £1 bet at 2.7% costs 2.7p on average, so 50 spins an hour costs about £1.35. Fast games add up: a 96% slot at 500 spins an hour costs about £20 at £1 a spin, even though the edge is only 4%.

Questions

Why is a slot so expensive per hour?

Speed. Each spin has a small edge, but you can play hundreds of spins an hour, so the total staked, and the average cost, grows quickly.

What does house edge mean?

It’s the average share of each bet the casino keeps over the long run. It’s 100% minus the RTP.

▶Watch: The house edge explained
Our short video guide explains the idea behind this tool, step by step.

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18+ only. Please gamble responsibly. These tools show averages and examples. They can’t predict a single session, and no tool or system can beat the house edge. Set a budget and a time limit before you play. For free, confidential support, visit BeGambleAware.org or call the National Gambling Helpline on 0808 8020 133.