JetX calculators
These calculators run at 97%, the RTP most often listed for JetX; casinos may set anything from 96.2% to 98.9%, so your real costs move slightly with your casino's setting. Targets are modelled up to 25,000x, the most cited ceiling, and with up to two bets per round each bet is its own calculation at the same edge.
Wait-time calculator
Pure probability from the RTP model, independent of any history.
Chance per round
9.7%
Average wait
10 rounds
Rounds for a 90% chance
23
Rounds for a 99% chance
46
Chance of at least one 10.00x within 20 rounds: 87.0%.
Session cost calculator
The house edge applies to every unit you stake. This is the long-run average; a single session can end far above or below it.
Total staked
100.00
Expected loss
3.00
Expected return
97.00
The house edge is 3.0% of every unit staked, so 100 rounds at 1.00 cost 3.00 on average. Winning rounds do not reduce this: the edge applies to the total you put through the game.
Losing-streak calculator
How likely is a run of misses at your target? Worth checking before trying any doubling system.
Miss chance per round
51.5%
Chance of at least one such run
37.8%
Units a doubling system loses
255
Aiming for 2.00x, the chance of 8 misses in a row at least once in 200 rounds is 37.8%. A system that starts at 1 unit and doubles after every miss has lost 255 units by the end of that run.
Every calculator uses the published RTP of 97% and the same model as the methodology page. They show long-run averages and probabilities, not predictions. RTP & Fairness · Methodology