Calculators for crash and instant games
Free, no sign-up, and they run in your browser. Each tool covers a family of games that share one formula, so you pick the tool first and the game inside it.
Fairness Verifier
Paste the seeds of a bet and recompute the result yourself.
Multiplier Odds
How often a round reaches the multiplier you aim for.
Step Risk
Your chance to survive each next pick, and what it pays.
Paytable Explorer
Where the result lands most often and how rare the big slots are.
Session Planner
What a session costs on average and how long the bankroll lasts.
Strategy Simulator
See how betting systems really end, over thousands of sessions.
Max Win Odds
How rare the top prize is and how many rounds it takes on average.
Bet Smart
Combine a few options and see the titles with the highest RTP that fit, each with its casino.
Odds Toolkit
Convert odds between formats, strip the bookmaker margin and size a stake.
Every calculator, grouped by tool
Each calculator keeps a page of its own. Open one directly here, or move between the calculators of a tool with the tabs at the top of its pages.
Starting from a game and not from a tool? The crash and instant games covered on BetProof are listed by type, each with the calculator it opens in.