How to Calculate the Odds of Winning on a Slot Machine


Knowing the odds of winning on a slot machine can be a tricky thing to do. After all, the machine runs thousands of numbers every second, stops only when you press the “spin” button, and then correlates them to symbols. You can’t simply look up the odds on any machine, since the probability of winning varies with each game.

Probability of winning a slot machine

When playing slot machines, you can easily calculate the probability of winning by looking at the paytable. The paytable gives you information on the different winning combinations. For example, if you play three cherries on a slot with 20 symbols, your chances of winning are 20/1. Likewise, if you play three cherries on the same machine, your chance of winning is 1 in 8,050. The odds of winning are higher if you play for smaller jackpots.

In addition, you need to consider the RTP rate and variance of a slot game to determine how likely you are to win. Different slot games offer different payouts, so it is best to understand the variance of the machine you play before you place your money in it.


In slot games, you’ll find a wide variety of symbols. Some of these are regular symbols, while others are wild or have multipliers attached to them. These can increase your payouts or decrease them, depending on the amount you bet. Some of the symbols can even be stacked, which increases their chances of becoming part of a winning combination.

The symbols used in slot machines have changed dramatically since they were first introduced by Charles Fey. Back then, the most common symbols used in casino games were images of playing cards. These are still used for low-paying symbols, but later on symbols like the playing card suits and the bell became common. Bonus icons have become common, too.

Wild symbols can also create winning combinations. In some games, the wild symbol can substitute for other symbols to form winning combinations. In addition, the wild symbol can be a Colossal Wild, also known as a Mega Wild. It can cover an entire game and is usually larger than the regular symbol.

Changes in odds of winning on a slot machine

In most cases, the odds of winning on a slot machine don’t change much. However, in some instances, the amount of money a player puts into a machine can affect the outcome. Slot machines with higher denominations have better odds than those with lower denominations, so stepping up your bet could theoretically yield a higher payout in the long run. However, short term variance can make such a difference insignificant.

Changes in the odds of winning on a slot machine can be explained by dividing the number of winning combinations by the number of possible combinations. While this may sound complicated, it’s actually quite simple. By dividing the number of possible combinations by the number of winning spins, you can calculate the odds of winning a slot machine. Depending on the machine, the odds of winning can be as low as one in 17,000,000. This is comparable to winning the Lotto 6/49 lottery. As long as you are able to play the game consistently, the odds are in your favor.

In many cases, the casino is legally required to provide a certain number of payouts for a given number of spins. This helps to keep casino costs low. While gambling regulations require casinos to adhere to payout limits, many companies choose to operate within these limits.