If a slot bonus triggers “1 in 100 spins” on average, does that mean you are guaranteed to get one if you spin 100 times? Absolutely not.
This calculator uses the Binomial Distribution to show you the real probability of hitting a specific event (Bonus, Jackpot, or Max Win) over a set number of spins.
What are the odds of hitting the bonus in X spins?
The “Guarantee” Myth
Many players believe that if an event has a 1% chance (1 in 100), playing 100 times gives them a 100% chance. The math proves otherwise:
- Chance: 1 in 100.
- Spins: 100.
- Real Probability of Hitting: 63.4%.
This means there is still a 36.6% chance you will spin 100 times and get absolutely nothing. You would need to spin 300 times to reach a 95% confidence level.
How to Use
- Hit Chance (1 in X): Find this in the slot info (e.g., Bonus frequency 1 in 150).
- Number of Spins: How long is your session? (e.g., 500 spins).
- Result: The percentage chance that you will see the feature at least once.
Frequently Asked Questions (FAQ)
What is the “Gambler’s Fallacy”?
It is the mistaken belief that if a bonus hasn’t hit for a long time, it is “due.” In reality, every spin is independent. Even after 500 dead spins, the chance of hitting the bonus on the next spin remains exactly the same (e.g., 1 in 100).