Free slot calculators and tools
Every tool here runs on the published math of Stake Engine slots: real RTPs, real max-win odds and real outcome tables, not estimates. They're free, need no account and never place a bet.
Slot simulator
Play 2,000 sessions on a game's real outcome table and see how far a budget goes.
RTP checker
Every mode's RTP for any Stake Engine slot, and which games cut their RTP in a newer version.
Bonus buy calculator
The price, long-run cost and pay-back odds of a bonus buy at your bet.
Max win odds calculator
Your real chance of hitting a slot's max win in the rounds you play.
Bonus hunt calculator
Track a bonus hunt: break-even multiplier, what's still needed and the expected result.
Bankroll calculator
The expected cost of a session or a month of play, game by game.
Wagering requirement calculator
How much a bonus's wagering requirement makes you bet, and what clearing it costs on average.
Compare slots
Two to four games side by side: RTP, max win and its odds, volatility and bonus buys.
What the tools can and can't tell you
They show averages and probabilities over many rounds. They can't predict a session, and nothing makes a result more likely: every round is independent. Use them to understand what a game costs and how rare its big payouts are, then set a budget you're comfortable losing. New to the terms? See the glossary.