Crash Game Calculator: Odds, EV & Streaks

Your round

Game RTP (%)In the game's rules. 99% means a 1% house edge.

Cash out at (multiplier)

Bet per round (£)

Rounds

Streak length

The odds

Chance a round reaches your cash-out–

That's about 1 round in–

Win when it does–

Average loss per round–

Average loss over all rounds–

Expected wins in those rounds–

Chance of winning the streak in a row–

Chance of losing the streak in a row–

Chance of at least one win in all rounds–

In a fair crash game with RTP r, the chance the multiplier reaches x or more is r ÷ x (most games also crash instantly on a share of rounds, which is where the edge comes from). Your average return per round is then (r ÷ x) × x = r for every cash-out target, so the expected loss is always bet × (1 − r). Streak chances assume each round is independent.

Maths reviewed by Josh Miller
Tested by Diana Westfield

Updated 10 Nov 2026How we calculate →

Spotted a wrong result?Report an error Corrections log

Every crash game runs on one tidy formula: the chance of reaching a multiplier is the RTP divided by that multiplier. With a 99% RTP, 2x comes up 49.5% of the time, 10x 9.9%, 100x 0.99%. The CasinoCalcs crash game calculator above turns that into what matters for you: how often your cash-out hits, what a session costs, and how long the losing streaks get. It’s free and works for Aviator-style games and any other crash game, as long as you know the RTP.

Crash game odds by multiplier

Cash out at	Chance (99% RTP)	Chance (97% RTP)	Lose 10 in a row (99%)
1.5x	66.0%	64.7%	1 in 48,000
2x	49.5%	48.5%	1 in 927
3x	33.0%	32.3%	1 in 55
5x	19.8%	19.4%	1 in 9
10x	9.9%	9.7%	1 in 2.8
100x	0.99%	0.97%	1 in 1.1

Look at the last column. Ten losses in a row at 2x is rare. At 10x you’ll see it about once every three runs of ten. Nothing’s wrong with the game when that happens. It’s just what a 9.9% chance looks like.

The maths that cashing out early can’t change

Here’s the part most crash game strategy videos skip. Your average return is the chance of winning times what you get back. At 2x: 49.5% × 2 = 0.99. At 10x: 9.9% × 10 = 0.99. At 1.1x: 90% × 1.1 = 0.99. The same 1% loss whatever you pick. So £10 a round for 100 rounds costs £10 on average at any cash-out point, on a 99% game. On a 97% game it’s £30.

What does change is the shape. Cash out at 1.2x and you win most rounds but each crash wipes out about five wins. Chase 50x and you lose almost every round, then occasionally catch a big one. Doubling your bet after each loss doesn’t help either: it trades many small losses for a few huge ones. The martingale calculator shows how fast that grows.

Where the edge hides

Most crash games crash at 1.00x on a small share of rounds, before anyone can cash out. That instant crash, plus the way the curve is built, is the whole house edge. You can see it play out round by round in the crash game simulator. For other instant games, try the Plinko calculator or the crypto dice calculator, which use the same RTP-divided-by-target maths.

Limbo is a crash game without the wait. The limbo calculator has its odds by target.

Crash rounds last seconds. Set a loss limit before the first one. BeGambleAware.org offers free, confidential help.

Frequently asked questions

What are the odds of a crash game reaching 2x?

With a 1% house edge, 49.5%. In general the chance of reaching x is (1 − house edge) ÷ x, so 10x is 9.9% and 100x is 0.99%.

Does cashing out early lower the house edge?

No. Every target multiplier has the same expected loss: the house edge times your bet. A low target wins more often but pays less.

What is the house edge on Aviator-style games?

It varies by game and is usually shown in the rules as the RTP, commonly 97% to 99%. Enter it in the calculator.

Can a strategy beat a crash game?

No. Rounds are independent and every cash-out point loses the same share on average. Doubling after losses only makes the losing streaks more expensive.