Fibonacci Roulette System

The Fibonacci Strategy Applied to Roulette

10 min

The Fibonacci strategy is one of the safest for Roulette. Learn to use the Fibonacci strategy Roulette progression and its reverse version from a true expert!

Short summary of what you will learn:

  • The Fibonacci sequence is a string of numbers, where the next number is the sum of the previous two in the string.
  • This sequence in Roulette represents the bets you should place after each win or loss.
  • If you win, you need to resume the sequence. If you lose, you must raise your bet based on the Fibonacci sequence.
  • While using this sequence, in the long run, reduces your losses, it also diminishes your potential wins.
  • We don’t recommend using the sequence for more than 10 rounds.

Keep reading to understand all the necessary details.

The Fibonacci Sequence and the Fibonacci Roulette Strategy

The sequence is a series of numbers representing your stake for Roulette bets.

The Fibonacci Sequence and the Fibonacci Roulette Strategy

The strategy is based on a negative progression, so you must up the wager when you lose.


Even if the Fibonacci sequence can start with a zero, it mostly begins with 1 unit: 1-1-2-3-5-8-13-21, and so on.

The Fibonacci Roulette strategy is used on even-money bets, meaning you should use the strategy when betting on high/low, or even/odd. It’s also used as a Roulette red or black strategy.

Let’s explain how to calculate the Fibonacci sequence:

  1. The system’s progression rule is that any next number is the sum of the previous two numbers.
  2. For each lost bet, you add up the previous numbers and thus obtain your next stake.
  3. When you win, you return two positions back in the sequence.

Here’s how to use the Fibonacci betting system:

You must start with a clearly defined betting unit. Throughout our guides for Irish players, we keep reminding you to set a gambling budget and stick to it.

You cannot use the system to determine the outcome of a Roulette game. For this, there are special Roulette number prediction methods explained by our lead expert in our designated guide.

For this system to work, you must take these words seriously.

For example:

  • Suppose you’ve just registered your account at a top online casino in Ireland. After you complete registration, you’ll likely make a deposit and start playing.
  • Divide your bankroll by game type. Say you’re mainly a Roulette player, but you also like to indulge in slots every once in a while.
  • Set apart 30% of your funds for slots and 70% for Roulette.
  • For Fibonacci to work, you must start with the lowest betting unit available.
  • The remaining funds should be further divided by 100 so you obtain your initial stake unit.
  • Remember the progression: 1-1-2-3-5-8-13-21…
  • The two 1-1 at the beginning of the sequence represent your betting unit.
  • If you follow our tips, that unit should not exceed 1/100 of your bankroll.
  • Depending on you winning or losing, you will have to move back and forth.
  • So, at some point, you may have to bet 21 units.
  • Make sure betting 21 units won’t carve out too much of your bankroll!
  • If your first wager is a win, remember you must restart the progression. You only add up numbers in case of a loss.

Other Roulette negative progressions we explain in our guides include:


The Fibonacci strategy is arguably safer than the other negative progressions available. Instead of doubling your bet as with Martingale, you add up your last two wagers.

There are two scenarios where you can score a profit with Fibonacci:

  1. If the first wager is a win, you get a 1 unit profit. However, you then need to resume the sequence from square one.
  2. If the first bet is a loss, you continue betting until you get a win. Once a bet hits home, you adjust your stake size according to the second-previous number in the string.

This pattern continues until you return to the first number and bet amount.

Be aware

The further you go down the series, the losses will get bigger, so exercise caution!

The Fibonacci Roulette Strategy in Action

The aim of this strategy in action is to gradually return to your initial stake and prevent major losses.

Based on our research and updated Roulette casinos list, most Roulette games allow you to use this strategy with all appropriate bets

First example of Fibonacci system: even wins and losses

Rounds Bet value Starting bankroll: €100
Win €1 €101
Win €1 €102
Loss €1 €101
Win €2 €103
Loss €1 €102
Win €3 €105
Loss €2 €103
Loss €5 €108
Final result €8 Profit End bankroll: €108

Let’s explain the Fibonacci Roulette strategy odds in the table

The Fibonacci roulette strategy odds

The only type of bet that we are using for the system in Roulette is the even-money bet, with odds close to 50-50%.

Placing wagers on red/black, even/odd, or high/low has real odds of 48.65% in European Roulette and 47.37% in American Roulette.

Both types of Roulette bets payout at 1:1. For a more detailed approach, investigate our full European Roulette guide.


Many of the top live dealer casino sites in Ireland that we tested and selected provide Roulette games and bonuses but forbid the use of strategies or limit the bonus bet amount as far as even-money bets are concerned.

Second example for Fibonacci strategy: losing streak

Rounds Bet value Starting bankroll: €100
Win €1 €101
Loss €1 €100
Loss €2 €98
Loss €3 €95
Win €5 €100
Win €2 €102
Loss €1 €101
Loss €3 €97
Final result €3 Lost End bankroll: €97

A losing streak can be easier to take with this system.

Remember the strategy works primarily as a way to avoid major losses.

During 8 rounds of play according to the sequence, 5 were lost bets. In the end, despite the majority of bets losing, the overall bankroll change was not that significant.

Practically, instead of losing 5 units for 5 lost bets, Fibonacci helped reduce those losses to 3 units.

Third example of the Fibonacci strategy: winning streak

Rounds Bet value Starting bankroll: €100
Loss €1 €99
Win €1 €100
Win €1 €101
Win €1 €102
Win €1 €103
Win €1 €104
Loss €2 €102
Win €1 €103
Final result €3 Profit End bankroll: €103

As per the results in the table, you won’t make significant profits when 6 out of 8 betting rounds return positive results.

The rule states that, in case you start with a winning streak, every next bet will be at the minimum stake. Therefore, your profit will only increase slowly.

The strategy’s main use is safeguarding your gambling funds!

Fibonacci Strategy Roulette Results in the Long Run

Fibonacci Strategy Roulette Results in the Long Run

  • Because of the extra green zero, the even-money bet on Roulette doesn’t offer real 50-50 odds.
  • However, it remains the best bet in Roulette in terms of odds.
  • Even if you cannot bypass the house edge completely, using the sequence can help you diminish losses. At the same time, though, you also diminish your potential returns.

The examples prove the main usage of this strategy is to mitigate the Roulette house edge.

While you may get some profit if you follow the staking plan by the book, you shouldn’t raise your expectations too high.

How to calculate the expected value of this strategy:

  • We only use even-money bets with this Roulette strategy, so we’re already at a disadvantage.
  • Given the house edge, over an extended series of bets, we’re bound to lose 2.7% of the time at European Roulette and 5.3% at American Roulette, due to the difference in Roulette numbers and table layout, which influence the house edge.
  • That means the expected value would be negative for a long enough series of bets.

Calculating the expected value can give you a rough estimate of how much you can potentially win or lose during your Roulette session.

The Alternative Reverse Fibonacci System

There is an alternative if you want faster returns: the reverse Fibonacci strategy.

The alternative reverse Fibonacci system

It literally involves taking the steps in reverse, so now we’re talking about a positive progression.

The reverse sequence rules are:

  • You move one step forward with your stake after each win, instead of upping your wager when you lose
  • In case of a loss, you decrease your bet and take two steps backwards
  • However, be advised this is a lot riskier than the original.

The most likely results of the reverse Fibonacci betting system:

The reverse version can yield positive results, but only if you get your even-money bets right consistently.

It can also drain a significant amount of your bankroll if, after a positive series, you encounter a loss.


We strongly suggest that you combine the two versions during Roulette gameplay based on your budget for the best results.

Fibonacci Roulette Results Compared to Other Systems

Strategies Betting algorithm
The Martingale This strategy doubles the bet every time you lose. When a win occurs, the next bet will be the amount you started with.
The Reverse Martingale (Paroli) You double the next wager every time you win, and you return to your initial bet every time you lose.
The Grand Martingale You start with a base wager. If you win, you double the stake and add a single unit. If the next one is a loss, double the stake again and add a unit to it.
Labouchere First, decide the amount you want to win and create a sequence of smaller numbers that add up to that.

Add the rightmost and leftmost numbers to obtain your first bet. If you win, remove the numbers from the string. Repeat the process for each win.

If you lose, you add the wagered amount to the right side of your series.

D’Alembert Here you won’t double the wager every time you lose, but simply add 1 unit.

So if you wager €5 and lose, the next bet will be €6. When you win, you decrease the bet by 1.

This is a graphic visualization of the Fibonacci system vs other systems:

The Fibonacci System vs Other Systems A Visualization

Tips for Using the Fibonacci Strategy

  • Be aware the system won’t improve the default Roulette odds we explain in our designated guide
  • Start with the minimum bet available
  • Play at European Roulette casinos in Ireland for the best odds
  • Check the site’s Terms and Conditions if you’re playing with a bonus
  • Even if you’re playing a negative progression, don’t go overboard and know your limits
  • Play at a table with high betting limits or start really low
  • Avoid Roulettes with more than 1 zeros, such as American Roulette
  • You shouldn’t bet for more than 10 rounds using the system or your bets may become too risky


What is the Fibonacci system?

The system represents a sequence of numbers. Every next number is determined by the sum of the previous two numbers. You can apply it in Roulette for safer outcomes.

What are Fibonacci sequences?

The series almost always starts with 1 and continues with 1-2-3-5-8-13-21-34-55, and so on.

What makes the Fibonacci string so special?

It is unique because it gives Irish players a chance to keep their bankroll largely intact after a few losses. It’s also a naturally occurring phenomenon.

Can a Fibonacci Roulette strategy work long term?

Roulette is a game of luck, so using this system or any other strategy will always carry some risk. In the long term, any strategy is bound to fail because of the house edge.

How good is Fibonacci betting in Roulette?

You may gain minimum profits for a winning streak, which Irish players may consider a downside. However, you will mitigate losses and that’s the main benefit of this strategy.

How to use Fibonacci in Roulette?

You place one bet in the beginning, for example, €1. The following bet will also be €1. However, if you lose, the next bet will be €2. If you win, you must move back two numbers in the sequence at any point.

Tudor Turiceanu
AuthorTudor TuriceanuCEO & Chief Editor at Casino alpha

Tudor uses his multiple systematic skillsets to oversee and coordinate the CasinoAlpha project. He assists the authors, to create a transparent gambling niche for users. As a CEO and Chief Editor with broad knowledge, Tudor knows the importance of transmitting confident advice.