Calculating Rtp For Slot Machines

It can be quite tricky to get your head around calculating online slot probabilities, especially when all you want to do is enjoy playing slots and win some money! But when it comes to understanding how to calculate Slotzo online game probabilities, a little bit of knowledge can go a long way. Many players swear by different strategies in calculating online slot probabilities to give you the best chance of winning big while having a whale of a time on the reels.

For example, if you play a slot with 95% RTP and make a hundred of $1 bets, you will on average get $95 back in winnings. The rest 5% is house advantage (HA). RTP is calculated over a long period of time with many trials, so don’t expect your winnings to be exactly as announced if you play a high volatility game for a short period.

You might be wondering, what’s the benefit of calculating online slot probabilities anyways, why not just choose the game that looks most exciting? It really all depends on what matters most to you when playing slots. If you’re just playing for a good time and you’re only interested in playing slots with the best quality graphics with exciting features that will give you the maximum amount of entertainment and that’s your main deciding factor on what game you play, that’s fair enough! However, some players are on the hunt of slots that can maximise their chances of winning, and this is where calculating online slot probabilities can come in very handy.

How to win slot games

First of all, it’s important to first understand how slots work so you can appreciate how slot probabilities can be calculated. The outcome of slots depends completely on a random number generator, meaning the outcome of slots can’t be accurately predicted as the outcome is completely random. You might think that this means you can no way of working out the probability of winning a slot, but that’s not the case! Secondly, every slot game has individual gaming features which make them distinctive from one another, which is something to take into consideration when deciding which game to play. Finally, you can use the volatility and the RTP of slots to calculate the probability of winning a slot game.

Let’s dig a little deeper to try and help you get your head around how to choose the games that are most likely to land you a fabulous fortune! You can use a game’s payback or return to player percentage to your advantage to help you choose which slot game to win – whether you play on a slot app, online casino or on a land-based casino, all slots function the same and have a return to player percentage.

Understanding how a random number generator works is immensely important, especially as it will mean that you won’t be under the illusion that you can cheat the system, that there is a special way to beat the slot and predict what symbols will come next, or when you are “due a win”.

Gambling odds: slot machines vs table games

Not all casino games are created equal, and for different types of gambling, different strategies and approaches need to be employed depending on how they work. For example, unlike classic casino table games like poker or Blackjack, with slot machines, you are not able to apply a strategy to increase your chances of winning, as they are games of chance rather than games of skill. Bingo is similar in this respect, as bingo is the ultimate game of chance, as the numbers are drawn at random and it’s purely down to luck whether your numbers are drawn or not. Similarly, with slots you can’t employ any kind of strategy to predict the outcome of the symbols on the reels – unlike Blackjack, there is no version of card counting for slot machines!

That’s not to say there isn’t a house edge with table games such as roulette, blackjack and poker, but it’s a whole different ball game with slot machines is the house edge is higher with slot games, as players have no ability to influence the outcome of the game as they do in table games. This means that with slot games, the casinos win more often over an extended period of time than if you were to play table games, as table games like blackjack have a lower house edge which you can influence with gambling strategies.

As you can probably guess, you can’t apply the same mathematical strategies to slot games and therefore you need to take a different approach to predict the probability of winning a slot game, and this is where the return to player percentage comes in.

Slot machines with high rtp

Return to player percentage

There is a reason why casinos want their players to play slot games and why casinos generate approximately 70% of their income from slot games: generally speaking, the probability of winning slots in the long-term is not particularly high in comparison to other gambling games, like blackjack for example.

A random number generator works by randomly selecting the numbers and each selection is independent of one another, meaning that the previous results will have no bearing or impact on the next.

The random selection feature ensures that every spin is independent. Thus the results of the previous spins do not affect the next ones in any way.

The probability of winning a slot game is in part determined by the number of reels on the game as well as the number of symbols which are on each reel and ultimately whether the randomly generated pattern of symbols will give you a winning combination. You can calculate the number of possible combinations on any slot game by multiplying the total number of symbols by the number of reels each slot has. For example, if a slot game has three reels and six symbols on each reel the total number of possible combinations on this game would be 216, as this is the result of 6 x 6 x 6. Likewise, in a three-reel slot game which has 10 symbols on each, the total combinations would be 4,000 (10 x 10 x 10). Now all you need to do is use this calculation to then calculate the winning probability by dividing the number of possible combinations by the number of winning combinations, which will give you the odds of the game.


The Las Vegas Strip is no doubt one of the most-popular places to play slot machines. Millions of tourists hit Las Vegas Boulevard every year to spin the reels.

Most of these gamblers aren’t too concerned about their exact chances of winning. They just want to enjoy fun games and get a few thrills.

Of course, your bankroll stands to last longer when you do choose slots with fair pay. Therefore, you might be interested to know how Vegas Strip slot machines stack up to the competition.

Whether you’re going to Sin City anytime soon, or just thinking about it in the distant future, you’ll want to know the following info on Vegas Strip slots payback.

A Look at Vegas Strip Slots Return to Player (RTP)

The Nevada Gaming Commission (NGC) regularly offers revenue reports on their casino gambling industry. These resources cover gaming wins for the past 12 months, including wins for slot machines.

You can get a composite view on how well Nevada slots pay and their house edges by looking at these reports. You’ll also be able to see a breakdown on prominent jurisdictions within the Silver State.

The Vegas Strip has its own set of numbers, given that it’s the key attraction of Nevada’s gambling industry.

The NGC’s report breaks down how much the Strip’s slot machines pay based on coin denomination.

Here’s how much the most-popular coin denominations delivered in 2018:

  • Penny slots – 88.30% RTP (11.7% house edge)
  • Nickel slots – 91.63% RTP (8.37% house edge)
  • Quarter slots – 89.40% RTP (10.60% house edge)
  • Dollar slots – 92.30% RTP (7.70% house edge)
  • Multi denomination – 93.61% RTP (6.39% house edge)

You can see that penny slot machines are at the bottom in terms of payback. They only offered 88.3% RTP, making them one of the worst choices of all casino games in terms of winning.

The multi-denomination machines featured the best rate at 93.61% RTP. You might want to stick with these games on the Strip, given that they both let you change the coin size and offer the best payback.

How Do Vegas Strip Slots Compare to the Rest of Nevada?

Knowing how much Vegas Strip slot machines pay is a great start. However, a reference point is needed to measure if the Strip’s slots do or don’t pay well.

Casino Slots Rtp

Again, the NGC provides gaming win for the entire state as well as specific areas. These numbers can be pitted against the Vegas Strip’s figures to make a valid comparison.

Here’s how well slots paid throughout the Silver State in 2018:

  • Penny slots – 90.0% RTP (10.0% house edge)
  • Nickel slots – 94.39% RTP (5.61% house edge)
  • Quarter slots – 92.83% RTP (7.17% house edge)
  • Dollar slots – 93.61% RTP (6.39% house edge)
  • Multi denomination – 94.74% RTP (5.26% house edge)

Comparing the numbers, the Vegas Strip definitely doesn’t pay slots players like Nevada as a whole. All of their coin denominations offer at least 1% lower RTP than the entire state.

The biggest difference can be seen in the quarter slots. The Strip only delivered 89.40% in 2018, while Nevada paid 92.83% overall.

Another large discrepancy can be noticed with nickel slot machines. The Strip delivered just 91.63% against 94.39% for the state.

Numbers Show That Vegas Strip Slots RTP Isn’t So Hot

Vegas Strip slot machines are far from generous. In fact, they’re some of the lowest-paying slots that you’ll find anywhere in the world.

The penny slots are especially awful. They only offered 88.3% RTP last year, which is about as bad as it gets with slot machines.

Penny slots are often thought of as “cheap” games, because they only require one cent per line. But you’re theoretically losing $11.70 for every $100 wagered on Vegas Strip penny games.

Surprisingly, the quarter slots barely paid better than the penny slots. The Vegas Strip’s quarter slot machines offered 89.40% RTP, which is really bad when considering the coin size.

Only nickel, dollar, and multi-denomination slots delivered over 90% RTP. Multi-denomination machines were the best deal at 93.61% payback.

Nickel slot machines paid 91.63% RTP, which is okay by the Vegas Strip’s standards. However, this payout percentage isn’t so great when looking across the board.

Rtp For Slot Machines

Keep in mind that these are merely averages from a single year. But the percentages are fairly accurate when considering how many bets are taken into account each year.

Why Don’t Vegas Strip Slot Machines Pay That Much?

The primary reason why Vegas Strip slots fail to offer reasonable payback is because they don’t have to. Casinos on the Strip can feature low slot machine RTP and still draw visitors.

This iconic four-mile stretch is home to some of the world’s most-lavish casinos. Bellagio, Caesars Palace, MGM Grand, and the Wynn are just some of the headlining establishments on the Strip.

Las Vegas Boulevard also offers many other attractions that draw tourists. The Park, LINQ Promenade, Neon Museum, and Fountain of Bellagio are some of the spectacles located here.

Few people go to the Vegas Strip in search of the highest-paying slot machines. The small number that do would be severely disappointed upon seeing the numbers.

The Vegas Strip is instead about the experience, with gambling mixed into the equation. Slot machines found here could probably pay even less, yet millions would still gamble on this famed boulevard every year.

Calculating Rtp For Slot Machines

But the fact remains that the Strip doesn’t offer good slots payback. It lags behind many other areas of Vegas and the rest of the state.

Vegas’ Boulder Strip exemplifies what good land-based slots payback should be. They offer some of the best-paying slots in the country.

Here’s the Boulder Strip’s slots RTP for 2018:

  • Penny slots – 90.21% RTP (9.79% house edge)
  • Nickel slots – 96.23% RTP (3.77% house edge)
  • Quarter slots – 95.93% RTP (4.07% house edge)
  • Dollar slots – 95.13% RTP (4.87% house edge)
  • Multi denomination – 95.42% RTP (4.58% house edge)

You can see a tremendous difference between slots payout percentages on the Vegas Strip and Boulder Strip. The latter offers around 2% or higher RTP with every coin denomination.

A glaring difference can be seen in how much each location pays on quarter slots. The Boulder Strip delivered 95.93% RTP in 2018 — over 6.5% higher than what the Strip paid.

Another notable difference included nickel slots RTP. The Boulder Strip featured 96.23% payback, versus just 91.63% for Las Vegas Boulevard.

Of course, it’s important to realize that these figures don’t necessarily represent what the machines are programmed to pay. They instead only account for what was realized last year.

However, the numbers are far enough apart to show that the Boulder Strip offers a much-better deal. The Vegas Strip, meanwhile, lags behind the state. But you also have to remember that Boulder Highway doesn’t exactly have the same ring to it.

The Eastside Cannery Casino Hotel, Sam’s Town Gambling Hall, and Boulder Station are all popular casinos. They just don’t have anywhere the amenities as a Bellagio or MGM Grand. You therefore want to consider if the higher slots RTP is worth it.

Getting the Most Bang for Your Slots Buck on the Strip

The Strip isn’t the greatest gambling destination in terms of slot machine RTP. But again, it’s not defined by offering great chances to win at casino games.

Las Vegas Boulevard is instead an all-around entertainment hub that gives you the opportunity to gamble. Nevertheless, you should at least know which games will help stretch your bankroll further.

The best deal is multi-denomination slots for two reasons:

  1. They offered an average of 93.61% RTP last year.
  2. These machines let you choose the coin size.

You should definitely seek out multi-denomination games when you’re in Vegas. They offered at least 1.31% higher RTP than the rest of the slots last year.

Dollar slot machines are your next-best bet purely in terms of payback. They delivered 92.30% RTP. But you’ll actually get more play out of nickel slots.

Here’s a theoretical comparison between both slots to show the difference:

  • You perform 1,000 spins on dollar slot machines.
  • House edge is 7.67%.
  • 1,000 x 1 = $1,000 in total bets
  • 1,000 x 0.0767 = $76.70 in losses on dollar games
  • You perform 1,000 spins on nickel slot machines.
  • House edge is 8.37%.
  • 1,000 x 0.05 = $50 in total bets
  • 50 x 0.0837 = $4.19 in losses on nickel games

The theoretical losses with both types of slots can differ when there are varying amounts of paylines involves. But if all lines are equal, then the nickel games are cheaper.

The same can be said of penny slot machines when compared to nickel slots. They only charge one cent per line, meaning they’re fairly cheap to play.

However, RTP is the problem with penny games. You have to weigh whether it’s worth facing 3.3% lower RTP with penny slots just to enjoy lower risk on a per-bet basis.

Do Some Bankroll Calculations Before Visiting the Vegas Strip

Slot machines aren’t cheap on the Vegas Strip. Penny slot machines are especially expensive, boasting an average house advantage of 11.70% last year.

You therefore want to have a strategy in place for handling your gambling funds before leaving for your trip. The first order of business is to make sure that you don’t bet money you can’t afford to lose.

A good way to do this is by going through your bills and figuring out how much free money you have each week or month.
You can then set aside a percentage of this amount (some should be used for savings) for a slots bankroll.

The next step is to think about important variables, such as your spins per hour, average bet, and hourly losses. You can either come up with these estimates by tracking them yourself or merely thinking about the proper numbers.

Most slots players spin the reels between 500 and 700 times per hour, depending upon breaks. You likely fall somewhere in this range too.

Your average bet size should be fairly easy to figure out. You probably have a typical wager size, such as $0.25 or $0.50.

Slots With Highest Rtp

Hourly losses can be difficult to determine, because they change based on the volatility and house edge of the games you’re dealing with. But a nice round number to consider is 250 lost bets per hour.

You’ll probably lose around 250 wagers each hour until you’re able to hit some big payouts. If you’re wagering $0.50 per spin, this equals $125 in losses per hour.

The final step is to run the variables and figure out how long your bankroll should last. The goal is to get an idea on if you should bring more money or make smaller bets to extend your entertainment.

Here’s an Example:

  • You have a $1,000 bankroll
  • Your average bet size is $0.25
  • 1,000 / 0.25 = 4,000 total bets
  • You lose 250 bets an hour
  • 4,000 / 250 = 16
  • Your bankroll will theoretically last for 16 hours

Slot machines are so unpredictable that it’s tough to determine if your bankroll will last X amount of hours, even with in-depth calculations.

But you can at least get a nice estimate on how long your bankroll will hold up. Of course, you could also win some huge payouts and be up big at the end of your session.

Play Some Online Slots on Your Vegas Trip


You’re probably heavily into the land-based casino experience if you want to play slots on the Vegas Strip. But you might try mixing up your play with online slots during the excursion.

Internet slots pay far better than those on the Vegas Strip or in any other land-based casino destination. The average online slot offers around 95% or 96% RTP, which is unrivaled in most brick-and-mortar casino hubs.

The aforementioned Boulder Strip is about the only place that compares to internet slots RTP. Even then, you have to bet at least a nickel per line to play games with 95% payback.

Rtp of slot machines
Online casinos allow you to play penny slots with 95% RTP or better. Land-based casinos, on the other hand, can’t do this and still make money due to their overhead costs.

Again, you probably aren’t going to the Vegas Strip to sit in your hotel room and play online slots. But you might consider lounging around the hotel, a bar, or elsewhere and spinning the cyber reels for a little bit to preserve your bankroll.

Conclusion

It would be great if you could enjoy the amenities of a Mandalay Bay or Wynn and have a great change to beat slot machines. Unfortunately, you can’t because Vegas Strip casinos don’t offer great slots RTP.

Multi-denomination games led the way with 93.61% payback in 2018. But this figure is nothing to get excited about in the overall scheme of things.

Penny slot machines paid just 88.30% RTP on average last year. You’d therefore be facing an 11.70% house edge with the average penny slot, which is horrible.

You’ll get an okay deal with dollar slots (92.30% RTP). Then again, betting $1 per spin and still facing low payback isn’t anybody’s vision of gambling bliss.

The truth is that you should head elsewhere in Vegas, such as Boulder Highway, if you want the best chance to win. The Boulder Strip offered over 95% RTP for all of its denominations, except penny games, in 2018.

You can also play online slots on the side during your trip enjoy the best payout percentages of all. Of course, the key drawback here is that internet slots don’t offer the same experience as land-based casinos.

Overall, you can’t go into a Vegas Strip casino expecting to beat the slot machines. They just don’t pay enough to give you a strong chance of winning.

What you can do, though, is combine proper bankroll management with reasonable expectations. Performing bankroll calculations helps you go into each slots session with a realistic mindset. This process also keeps you from betting money that you can’t afford to lose.