Check the math before you bet.
Every result on a provably fair game can be recomputed from three values. Paste them in and see for yourself. No sign-up, runs in your browser.
With a confirmed RTP: 320
No figure found: 273
Bet Smart: choose a game by its numbers
Tap what matters to you. The list shows the games in our data that meet everything you chose, highest RTP first. Open a game to see the casinos that run it, ranked by RTP.
How the list is made: every crash and instant game in our casino data that meets all of your choices in at least one casino, one row for each game, sorted by its highest RTP from high to low. Slot-like titles, bingo, table games and titles of a kind we could not establish are left out. Opening a game lists the casinos that run it, ranked by RTP. An option turns inactive when no game would meet it together with what you already chose. A game with no RTP figure meets neither RTP choice. The RTP is the figure the casino lists in its lobby. Where a lobby shows none, it is the figure printed inside the game or a published figure that two sources agree on, and the row says which. Low volatility covers the lobby labels low and low to medium, high volatility covers high and very high, and a game without a label meets neither. A lobby that does not mark reduced RTP versions cannot confirm that choice for its games. Popular means the first 20 titles of a lobby.
Casino game calculators to start with
All calculatorsFairness Verifier
Check a finished bet with its seeds, on your own device.
Multiplier Odds
Pick a target multiplier and get the share of rounds that reach it.
Step Risk
Mines, Towers, Chicken Road: the odds of one more safe step.
Paytable Explorer
Plinko, Keno, Wheel: every prize next to its probability.
Session Planner
Stake, rounds and RTP in, the average cost of the session out.
Strategy Simulator
Martingale and other systems, played thousands of times to the end.
Max Win Odds
The odds of the biggest multiplier a game can pay.
Bet Smart
Tick what matters to you and get the best-paying titles that match.
Odds Toolkit
Decimal, fractional and American odds, the margin inside them and a Kelly stake.
Crash and instant games
97%
The list of crash and instant game types shows which of them have a page of their own and which open in a calculator.
Casinos that run these games
All casinos
Drakaris258 crash and instant games · Aviator verified
Glorion293 crash and instant games · Aviator verified
DragonSlots916 crash and instant games · Aviator verified
Ragnaro290 crash and instant games · Aviator verifiedPopular this week
Learn what the numbers mean
Why no crash predictor can work
The next round is fixed before you bet, and nobody outside can read it.
How toVerify a bet in three steps
Server seed, client seed, nonce. Where to find each one and what to do with them.
Game guideMines: what each tile is worth
The multiplier for every mine count, and your chance on each pick.
Common questions about BetProof
Is BetProof a casino?
No. BetProof does not take bets or hold money. It is a set of calculators and a verifier that run in your browser.
Can these tools predict the next round?
No. Results are fixed by seeds before you bet. The tools show probabilities and let you check past results.
Do you store the seeds I paste?
No. Verification runs locally on your device and nothing is sent to a server.
Are the calculators free to use?
Yes. Every tool opens without an account and with no limit on how many times you use it.
What does provably fair mean?
The game shows the seeds a finished round was built from, so the result can be recomputed and compared with what you saw.
Where do the RTP figures of the casinos come from?
From the casino lobby where it shows them. Where it does not, from the rules inside the game or from published figures that two sources agree on, and the page of the casino says which.
Can a betting system beat the house edge?
No. A system changes how wins and losses are spread across a session. The average cost stays the total you stake times the house edge.
Which game has the highest RTP?
It depends on the title and on the casino that runs it. Bet Smart on this page lists the titles in our data by RTP, each with its casino.