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How to calculate the odds and payout percentages for online slots?

ByMicheal Davidson

Aug 23, 2023

Comprehending the probabilities and payout percentages on slots is essential for players aiming to make knowledgeable choices and optimize their winning potential. Payout percentages, or return to player (RTP), are a fundamental basis for online slots. The RTP indicates the percentage of wagered money the slot machine will pay back to players over time. For every $100 wagered, players can expect to receive $96 in winnings if the slot machine has a 96% RTP. Calculating the payout percentage for online slots involves analyzing their paytable and the probabilities associated with each possible outcome. The paytable provides information about the different symbols and their corresponding payouts, including the potential rewards for hitting specific combinations.

  • Collect data – Compile data from the slot’s paytable, including the payouts for each winning combination and the frequency of each symbol landing on the reels.
  • Calculate total payouts – Add up the total payouts for all possible winning combinations.
  • Calculate total bets – Calculate the sum of all possible bets placed on the slot.
  • Calculate payout percentage – Divide the total payouts by the total bets and multiply by 100 to get the payout percentage.

It’s important to note that the payout percentage is calculated over millions of spins and serves as a theoretical average. Individual sessions can vary significantly from the percentage calculated.

Understanding odds

Odds in online slots refer to the likelihood of a specific event occurring during gameplay. While payout percentages provide an overall picture of potential returns, odds focus on the outcomes of each spin. Calculating odds in online slots is more complex than determining payout percentages due to the game’s dynamic nature. Odds are affected by various factors, including the number of reels, symbols, and paylines in a slot machine, and the presence of bonus features and special symbols.

Determine the specific event you want to calculate the odds. For example, calculating the odds of landing a particular symbol on a specific reel. Count the number of outcomes that result in the desired event occurring. For instance, count how often the image appears on the designated reel. Calculate the total number of possible outcomes for the event. It involves considering the total number of symbols on the reels and the number of potential combinations. Divide the number of favorable outcomes by the total number of possible outcomes to calculate the odds. A game’s mechanics, the number of symbols on each reel, and special features affect its odds. Odds vary from spin to spin, making it a bit more complex to calculate compared to the straightforward calculation of payout percentages.

Factors affecting payout percentages and odds

Online slots use RNGs to ensure that each spin’s outcome is totally random and independent of previous spins. The configuration of the reels and the number of symbols on each reel impact the odds of landing specific combinations. The number of paylines in a slot online affects the odds of landing winning combinations. More paylines can increase the chances of winning, but they may also require larger bets. Bonus features, such as free spins, multipliers, and special symbols, influence payout percentages and odds.