What does RTP mean in a casino game?

Direct answer: RTP (return to player) is the long-run share of stakes a game is designed to pay back. A 96% RTP means a 4% house edge — on average €4 kept per €100 wagered across a huge number of rounds, not in one session.

How do you calculate expected loss from RTP?

Direct answer: Multiply total amount wagered by the house edge (100% minus RTP). Example: €1 × 1,000 rounds at 96% RTP → €1,000 wagered × 4% = €40 expected loss on average.

Does a higher RTP mean I will win?

Direct answer: No. Higher RTP only lowers the long-run average cost of play. Short sessions are dominated by variance — you can win or lose either way.

Where should I check a game’s RTP?

Direct answer: In the game’s info or help panel at the casino you are using. Studios sometimes ship multiple RTP versions; the operator’s build is the one that matters.

Where do the popular-slot RTP figures come from?

Direct answer: From AskCasinoAI’s verified game notes (popular titles such as Book of Dead, Sweet Bonanza, Le Bandit). They are educational defaults for the calculator — always confirm the live RTP in the casino lobby, because operators can run different builds.

Free maths tool

Casino RTP calculator

Pick a popular slot from our catalog to fill its noted RTP, or type a custom figure — then enter stake and rounds to see house edge and theoretical expected loss. Results are long-run averages, not a forecast for your next session.

Last updated 2026-10-10. 18+ only.

Popular slotCurrencyStake per roundNumber of roundsGame RTP (%)

Theoretical session maths

House edge

Total wagered

€1,000.00

Expected loss (long run)

€40.00

Theoretical return

€960.00

Formula: house edge = 100% − RTP; expected loss = total wagered × house edge. This is a long-run average, not a prediction for one session. Check the RTP in the game's info panel at the casino you use — published studio maxima can differ from the build an operator runs.

How the RTP formula works

House edge is simply 100% minus RTP. Multiply that edge by everything you put through the game (stake × rounds). That product is the statistical average the house keeps over a huge number of plays.

When you are clearing a bonus, total wagered is often far larger than your deposit — that is why wagering multipliers matter. Pair this tool with the casino wagering calculator to see turnover and expected cost of an offer together.

Related tools and guides

Use RTP to price playtime; use wagering maths before you accept a welcome bonus.

Wagering calculatorIs a bigger bonus better value?Wagering FAQ Responsible gambling

RTP calculator FAQ

What does RTP mean in a casino game?: Direct answer: RTP (return to player) is the long-run share of stakes a game is designed to pay back. A 96% RTP means a 4% house edge — on average €4 kept per €100 wagered across a huge number of rounds, not in one session.
How do you calculate expected loss from RTP?: Direct answer: Multiply total amount wagered by the house edge (100% minus RTP). Example: €1 × 1,000 rounds at 96% RTP → €1,000 wagered × 4% = €40 expected loss on average.
Does a higher RTP mean I will win?: Direct answer: No. Higher RTP only lowers the long-run average cost of play. Short sessions are dominated by variance — you can win or lose either way.
Where should I check a game’s RTP?: Direct answer: In the game’s info or help panel at the casino you are using. Studios sometimes ship multiple RTP versions; the operator’s build is the one that matters.
Where do the popular-slot RTP figures come from?: Direct answer: From AskCasinoAI’s verified game notes (popular titles such as Book of Dead, Sweet Bonanza, Le Bandit). They are educational defaults for the calculator — always confirm the live RTP in the casino lobby, because operators can run different builds.

18+ only. This calculator is educational and does not predict gambling outcomes. Never deposit more than you can afford to lose.