RTP calculator

What RTP actually measures

RTP — Return to Player — is the percentage of total wagered money that a game returns to players over its statistical lifetime. A 96% RTP slot returns $96 for every $100 wagered, on average, across millions of spins. The remaining $4 is the house edge.

The crucial qualifier is "across millions of spins". RTP is a long-run average. In any individual session, your return can be 0% (you lose everything) or 1000%+ (you hit a jackpot). The RTP figure tells you nothing about session-level outcomes.

When RTP becomes meaningful

RTP convergence — the point where your actual return approaches the theoretical RTP — depends on the game's volatility. Low-volatility slots converge in roughly 10,000 spins. High-volatility slots take 50,000–100,000+ spins. Extreme volatility games (Dead or Alive 2, Money Train 4, Mental) can take 500,000+ spins to converge to within ±1% of the published RTP.

For practical purposes: if you play under 1,000 spins of a high-volatility slot, your actual return tells you nothing about whether the game is "running hot" or "cold". You're sampling from a wide distribution. Variance dominates.

House edge per bet vs per session

House edge applies per bet, not per session. A 4% house edge does not mean you lose 4% of your bankroll in a session — it means each bet you place returns 96% of itself in expectation. After 100 bets at flat $1 stake, you've wagered $100 and lost ~$4 in expectation. Variance can put you anywhere from −$30 to +$30, but EV centres around −$4.

Reading published RTP figures

Slot providers publish RTP, but the number can be misleading:

• Variable RTP. Some slots have multiple RTP versions (94%, 95%, 96%, 96.5%) selectable by the operator. Stake.com typically uses the highest-tier RTP, but verify on the game info screen.
• Bonus buy RTP differs. The bonus-buy version of a slot often has a different RTP than the base game — sometimes higher, sometimes lower.
• RTP includes feature triggers. The 96% figure assumes the average player triggers the bonus at the published rate. If you stop playing before triggering it, your effective RTP is lower.

Using the RTP calculator

Enter game RTP, bet size, and intended spin count. The calculator returns expected return, expected loss, and house edge. Use these numbers to budget sessions and set realistic expectations. A 96% RTP session at $1 × 1,000 spins has an expected loss of $40 — that's the cost of entertainment, not the cost of bad luck. If you lose more, variance was unkind. If you lose less, variance was kind. Either way, your long-run trajectory is set by the published RTP, not your sample of it.

RTP across game types on Stake