Calculating the chances of an event happening is not only important in daily life, but in roulette as well. A roulette probability calculator is a software or app that determines how many times a desired outcome could appear. By learning how many times a number can come up, players can make smart bets. Even though this tool will not predict where the ball will land, you will be able to minimize the risk of losing. That is just one of the advantages of using a probability calculator for roulette.

**Advantages**

1. Easier to Calculate Probability

Another advantage of using a roulette probability calculator is it makes finding the chances of a number coming up easier. To calculate probability the long way, you first have to define your events or outcomes. For example, you want to calculate the chances of the wheel landing on red.

You have 18 numbers in European roulette that are red. The next step is to identify the number of possible outcomes. In this case, there are 37 likely results. Divide the chances the roulette wheel lands on red by the number of possible outcomes and you get the probability.

2. Using Probability to Create a Betting System

Most roulette systems rely on probability. A roulette player would be able to understand a system better by using a roulette calculator. Not everyone is a math genius who can create a system without relying on the roulette wheel bias. With a calculator for roulette, it would be easier to take advantage of a game that is difficult to beat without using measurable tactics.

3. Helps You Define The Bankroll

Knowing the probability of a bet can help you determine the initial and maximum bankroll amount. You do not have to follow a flat or progressive betting to know how many units you should place on a bet. Roulette calculators that determine probabilities are ideal for those who are not fans of using systems with rigid instructions. If a player understands that the probability of the ball landing in any one number is a fixed value given the number of possible outcomes, then they will not lose or risk as much on a series of bets.

**Disadvantages**

1. Difficult to Exploit

Knowing that the probability of hitting red is 46.37% does not mean you can come up with the correct amount of units to bet. The chances of hitting black will be 46.37% as well. The units you bet depend on how much you want to risk. Even if the previous outcomes were black, that does not mean that the ball will decide to even out by falling on red.

2. Falls Short of Expectations

Since a roulette probability calculator can only show roulette players the possible odds of a ball landing on a number, it might fall short on most expectations. When players hear of a roulette calculator, they think of software or apps that determine if they can win on a certain bet for sure. The probability calculator and even roulette charts can only state the facts and not predict where the ball will land.