Probability calculator · not a hack

Crash Predictor — Real Odds for Any Multiplier

The only honest crash predictor: exact probability of reaching any multiplier at any house edge, expected results over N rounds, typical losing streaks — and a seed verifier for real rounds.

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1%: Roobet, Stake, Shuffle, BC.Game · 3%: Aviator · 4%: Gamdom, Duel

P(round reaches x) = (1 − edge) / x. The multiplier is fixed by the server seed before you bet; no app or signal group can see it in advance.

Probability the round reaches your target
49.50%

TargetP(reach)Expected winsLongest losing streakExpected result

This tool shows the odds — it does not and cannot predict individual rounds. “Expected result” is the long-run average: real sessions swing far above and below it.

What this crash predictor does

It predicts probabilities, which is the only thing that can be predicted about a provably fair crash round. Enter the multiplier you want to cash out at and the house edge of your casino; the tool returns the exact chance the round reaches it, how many wins to expect over your planned number of rounds, your expected profit or loss, and the longest losing streak you should budget for.

Why it cannot show the next multiplier

Because nothing can. The crash point is fixed by a server seed whose hash is published before the round; reversing it would mean breaking SHA-256. Apps and Telegram channels that claim otherwise are random-number generators attached to affiliate links — we tested them in this investigation.

Verify a real round

Paste a revealed server seed into the verifier field and the tool computes the crash point with the Bustabit / Stake method (HMAC-free variant: SHA-256 of the seed, first 52 bits, 1% edge). Compare it with the result you saw. Sites that chain seeds or use client seed + nonce may need their own fairness page; here is how each scheme works.

Reading the table

At a 1% edge: 1.10x succeeds 90% of the time, 2x 49.5%, 10x 9.9%, 100x 0.99%. Multiply probability by payout and you always get 0.99 — the house edge. The “longest losing streak” column is the streak length you should expect to see at least once in 100 rounds; if that number scares you at your chosen multiplier, lower it.

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