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Constant Bet Roulette Strategy

The Constant bet strategy has a special place amongst all of the ones I mentioned in the main roulette strategies article. It’s unknowingly used by many roulette players that just want to have fun and don’t really think about how they should play it to maximize their chances to leave the casino with more money than they came into it with.

The Constant bet strategy consists in placing the same over and over. It’s simple, but it’s crucial to choose the best bet type and the optimum bet size in order to maximize your chances to win. Keep reading and find out the best bet type and size to use, supported by computer simulations.

Keep reading this article and learn:

  • What is the best types of bets to place?
  • What bet sizes should you use to maximize your chances to win?
  • What are your chances to win big by placing the same bet over and over again?
  1. How the Constant bet strategy works
  2. Simulations of the Constant bet strategy
  3. Conclusion and recommendations

Note: This article is focused on the Constant bet strategy, which is just one of the strategies I talk about in the main article. To understand everything, it’s best to read the roulette strategies article first and then focus on the individual strategies. If you haven’t read the main article, I strongly advise you to go back to it before focusing to the specific strategies.

How the Constant bet strategy works

I even hesitated to call the Constant bet strategy a "strategy", because it’s just one of the basic ways to play roulette. However, I’ve decided to include it in my analysis, as it can be used as a benchmark to compare all of the other strategies with.

What’s more, while the base idea of the constant bet is very simple, the expected results vary hugely, depending on the type of bets you place and the percentage of your initial bankroll you wager in each game round. Basically, the Constant bet strategy is about finding a compromise between two "polar" options:

  • Low volatility and, low possible win and a possibility to play roulette for a longer period of time
  • High volatility, chance to win big, but also a big chance to lose everything too quickly

To achieve high or low volatility (or something in between), you can alter two factors that influence the way you play the game, as well as your expected results:

  • Type of bets you place
  • Size of your bets

I will use two model examples to demonstrate the two polar opposites I mentioned above.

EXAMPLE #1

A player walks into a casino with $100, sits down at a Roulette table and starts betting $1 on red or black color (this might not be possible in brick-and-mortar casinos because of the bet size limits, but let’s ignore that for now). He can stay at the table and play for hours or even days, but his chance to win a bigger amount of money is virtually non-existent.

EXAMPLE #2

A player walks into a casino with $100, sits down at a Roulette table and starts betting $50 on a specific number. He’ll most likely lose everything in his first two spins, but he also has a chance, albeit a small one, to leave the casino with a really nice win.

Which approach is the best? Well, the optimal use of the Constant bet strategy is, of course, somewhere in between, but it’s virtually impossible to uncover just by thinking about it. That’s exactly why I used my own simulation software to discover the best bet type and bet size to use when playing roulette according to the Constant bet strategy.

Simulations of the Constant bet strategy

Now, we’re getting into the interesting stuff. I’ve ran simulations, trying to figure out the optimal combination of bet types and bet sizes to achieve the best overall results for the given scenario.

Methodology and used variables

I find it important to enclose all the details about the simulations, so that you can interpret the results correctly and make a clear picture about the advantages and disadvantages of this strategy, as well as all of the combinations of bet types and bet sizes.

All simulations were made using my own simulation software and with probabilities and payouts of a single zero roulette without any special rules in place.

The first important thing to mention is the behavior of the players used in the simulations. The players have a bankroll of $100 and they follow the Constant bet strategy until:

  • They lose their entire bankroll.
  • They manage to "survive" 100 roulette spins, at which point they get up from the table and leave the casino, regardless of how much money they’ve lost or won.

Note: I chose 100 spins not only because it’s a nice round number, but also because it could correspond with an average session at a roulette table. According to my observations and calculations, 100 spins would amount to approximately 3 hours at a live roulette table or online roulette with a live dealer.

Regarding the types of bets, I considered all of the alternatives and decided to use these in my simulations:

  • Color – Red or Black (chance to win: 18/37, payout: 2x)
  • Corner – Four numbers that share one corner (chance to win: 4/37, payout: 9x)
  • Straight up – One specific number (chance to win: 1/37, payout: 36x)

As for the size of each individual bet, I decided to spread the numbers out across the interval from $1 to $50, which covers all if the interesting cases in my opinion.

Note: I used a bankroll of $100 and bet sizes from $1 to $50. However, the thing that really matters is the percentage of the bankroll wagered in each game round. A $1 bet with a bankroll of $100 is the same as a bet $10 and a bankroll of $1,000. As long as the ratio between the bet sizes and the initial bankroll remains the same, the results should be the same. I am not considering bet size limits for this strategy, as they generally shouldn’t be an issue because of the constant bet sizes.

The number of players simulated in each simulation is 1,000,000, which should ensure pretty exact results. There will still be some statistical deviations, however, they won’t influence the results in a significant way to change the overall outcomes of the simulations.

Bet type analysis

Before getting to the more specific simulations with different bet sizes, let’s get a closer look at using the Constant bet strategy with a fixed bet size of $4 and variable bet types, to get a better idea about how the bet type changes the expected results.

Bet type (payouts) % of total winners Winners leaving with $100-$200 Winners leaving with $200-$500 Winners leaving with $500-$1k Winners leaving with >$1000 Average cost
Color (2x)35%35%0.27%0%0%$10.8
Dozen (3x)41%37.7%2.8%0%0%$10.5
Six line (6x)45%32.2%12.4%0.001%0%$9.5
Corner (9x)37.2%18.7%18.5%0.04%0%$8.9
Street (12x)37.4%19.7%17.3%0.27%0%$8.5
Split (18x)35.8%10.6%24.3%0.77%0.0001%$7.5
Straight up (36x)30%10%15.5%4.6%0.037%$6
Table #1: Percentage of winners wagering $4 in each spin with different types of bets

Bet type (payouts) Players losing everything before finishing 30 spins Players losing everything before finishing 50 spins Players losing everything before finishing 75 spins Players losing everything before finishing 100 spins
Color (2x)~0%0.06%0.65%2.3%
Dozen (3x)0.02%1.17%4.74%9.42%
Six line (6x)1.2%10.8%20.4%28.16%
Corner (9x)5.7%17.6%30.6%39.5%
Street (12x)12.1%29.1%39.7%46.9%
Split (18x)24.9%38%46.2%56.4%
Straight up (36x)50.4%50.4%63.4%70%
Table #2: Percentage of players losing their entire bankroll before finishing 30, 50, 75 and 100 spins

As you can see, almost all of the players betting on Color get to play through the all 100 game rounds. However, they have virtually no chance to make a significant profit, as their balance tends to stay close to the initial bankroll. Almost all players that manage to make a profit leave than less than double their initial bankroll, with very rare exceptions. These players lose $10.8 from their bankroll on average, which is the most from all different bet types in this simulations.

The chance to play through the 100 spins and leave with a significant profit increases with more volatile bets, however, the chance to lose everything quickly increases as well. Over 50% of players betting $4 on a specific number (Straight up) lose everything before enjoying a single winning game round, as they lose 25 times in a row. When playing live roulette, that adds up to about 45 minutes of play time.

Note: The percentage of players betting losing within 30 and within 50 spins when betting on a number Straight up is the same in this case, 50.4%. That’s because there is literally no chance of running out of money between the 30th and the 50th spin. You either lose everything in the first 25 spins or win at least one spin and get to play at least 61 spins. This is a direct consequence of the specific values I chose for these simulations.

Bet size analysis and simulations #1: Color (red or black)

The first type of bet we’ll take a closer look at is a bet on red or black color. I’ll use a very similar table layout than before, but instead of different bet types, there will be various bet sizes in individual lines of the tables.

Bet size % of total winners Winners leaving with $100-$200 Winners leaving with $200-$500 Winners leaving with $500-$1k Winners leaving with >$1000 Average cost
$135.6%35.6%0%0%0%$2.7
$235.6%35.5%0.0001%0%0%$5.4
$535.6%34.1%1.5%0%0%$13.2
$1033.9%22%11.9%0.0008%0%$22
$1529.2%14.2%14.9%0.15%0%$26.2
$2024.3%7.3%15.6%1.4%0.0004%$28.5
$5010.9%0%3.8%5.6%1.4%$33.3
Table #3: Percentage of winners betting different amounts on the red or black color

Bet size Players losing everything before finishing 30 spins Players losing everything before finishing 50 spins Players losing everything before finishing 75 spins Players losing everything before finishing 100 spins
$1~0%0%0%0%
$20%0%0%0%
$50.018%0.64%3.4%4.3%
$108%19.8%32%40.5%
$1525.3%40.2%51.6%59.3%
$2041.2%54.6%63.7%69.9%
$5074.8%81.5%85.9%88.3%
Table #4: Percentage of players losing their entire bankroll before finishing 30, 50, 75 and 100 spins

Let’s take a look at the results. As one could expect, players betting $1 or $2 on red or black will definitely get to play the full 100 game rounds, but they also don’t have virtually any chance to at least double their bankrolls.

That slightly changes when we get to $5, where the chance to be in the profit after 100 spins is pretty much the same as when betting $1 or $2, but there is also a 1.5% chance to win more than $100. However, that also means some of the players don’t make it through all 100 spins, more specifically 4.3% of them.

There is a huge difference between the players betting $5 per round and the ones betting $10 per round. While the percentage of winners drops only slightly, the percentage of players who didn’t make it to 100 rounds increased almost 10-times to 40.5%. This is because the number of players who "survived" the 100 spins with less than the initial $100 is much smaller with the $10 bet.

The trend continues all the way to the last row of the table. The chance to win a big amount slowly increases, however, the percentage of players losing everything within 30, 50, 75 and 100 spins, of course, also rises with increasing bet size. For the $50 bet, which is the maximum I tested, only 25.2% of players make it through the first 30 spins, which is understandable, as they only start with enough money to cover two bets.

As you can see from the tables, the average cost for using this strategy increases with higher bet sizes. That’s also intuitive, because the players statistically lose a portion of each of their bets. The total wagered amount is higher with bigger bets, which also increases the average cost.

Best bet size to use

The ideal bet size to use with this exact strategy is $20 (or 20% of your initial bankroll) in my opinion. Of course, the best bet size for you could be different, because of the differences in preferences, but I think betting 20% of your initial bankroll on red or black brings a nice balance between the chance to win big and the probability to enjoy the game of Roulette for at least some time.

Betting $20, you’ll have a 24.3% chance to be in profit after 100 spins, with at least some chance (1.4%) to win five to ten times your bankroll. You’ll have a 54.6% chance to play at least 50 spins and the average number of spins you’ll play is somewhere around 45, which amounts to around 80 to 90 minutes of play in a live Roulette game.

Bet size analysis and simulations #2: Corner bet (four numbers)

Now, let’s take a look at the results of my simulations o players using the Constant bet strategy and wagering their money on a Corner bet.

Bet size % of total winners Winners leaving with $100-$200 Winners leaving with $200-$500 Winners leaving with $500-$1k Winners leaving with $1k-$5k Winners leaving with >$5k Average cost
$139.6%39.6%0.035%0%0%0%$2.8
$239.6%35.6%4%0%0%0%$5.2
$339.2%27.2%11.95%0.0011%0%0%$7.4
$437.2%18.7%18.5%0.04%0%0%$8.9
$534.24%16.65%17.1%0.47%0%0%$10.1
$1021.9%4.4%12%5.3%0.09%0%$11.2
$2011.8%0%4.2%5.5%2.1%0%$13.1
$504.8%0%0%1.5%3.3%0.03%$14.2
Table #5: Percentage of winners wagering different amounts of money on a Corner bet

Bet size Players losing everything before finishing 30 spins Players losing everything before finishing 50 spins Players losing everything before finishing 75 spins Players losing everything before finishing 100 spins
$1~0%0%0%0%
$20%0%2%6.3%
$30%5.4%15.7%24%
$45.7%17.6%30.6%39.5%
$519%32%43%49%
$1053.6%63%70.5%73.7%
$2074.4%80.4%84.8%87.2%
$5090.8%92.8%94.2%94.8%
Table #6: Percentage of players losing their entire bankroll before finishing 30, 50, 75 and 100 spins

The difference is noticeable right from the beginning of the tables. Players betting $1 now have a chance to at least double their initial bankroll, albeit a very small one (0.035%). The percentage of winners also increased by about 10% compared to players betting $1 on Color.

Players betting $2 in one spin have a better chance to have more than $200 after 100 spins, more specifically 4%. However, 6.3% of players didn’t make it through all of the 100 spins, which is a direct consequence of higher overall volatility caused by placing riskier bets.

When we take a look at the other end of the table with $20 and $50 bets, it’s clearly visible that these are a bit too risky for players that want to have a realistic chance to spend at more than couple of minutes at a roulette table. In both cases, only slightly over 25% of players don’t make it through the first 30 spins, with a lot of the players losing everything without even experiencing one winning game round.

Of course, $10 bets are a bit less risky than $20 and $50 bets, but I’d say they are still a bit too risky as more than 50% of players run out of money within the first 30 spins.

Best bet size to use

For the reasons mentioned above, I’d say the best bet size for this specific strategy is somewhere between $3 and $5 bet sizes. Players betting $3 in one round have a quite nice chance to more than double their initial bankrolls (11.95%) and a very small chance to finish playing with more than $500 (0.0011%). They are sure to play at least 33 game rounds and their chance to play through all 100 spins is very nice at 76%.

Jumping to $4 bets, the chances of a bigger overall win increase, of course, but the chance to end up with more than $500 are still pretty miniscule (0.04%). These players have a very big chance to play more than 30 spins, as they pretty much have to encounter one winning spin to do so. Players betting $4 play roughly 82 spins on average, which amounts to a pretty nice play time. However, almost 40% of these players still don’t make it through all 100 spins.

Players betting $5 in each game round risk even more. More than half of them (51%) doesn’t get to play the full 100 spins. That being said, their chance to end up with more than $500 increases significantly compared to the previous two groups, but it’s still only 0.47%.

If I had to choose one bet size, I’d most likely pick $4, as I think it’s the best risk-to-reward ratio out of the options I’ve experimented with in my simulations. That being said, you wouldn’t be too worse off betting $3 or $5 in each game round.

Bet size analysis and simulations #3: Straight up (one number)

Finally, let’s take a look at bet sizes for the most volatile use of the Constant bet strategy and the most volatile roulette bet type in general – the Straight up bet on one of 37 numbers on the Roulette table and the Roulette wheel.

Bet size % of total winners Winners leaving with $100-$200 Winners leaving with $200-$500 Winners leaving with $500-$1k Winners leaving with $1k-$5k Winners leaving with >$5k Average cost
$150.9%45.5%5.4%0%0%0%$2.7
$246.28%33%13%0.16%0%0%$4.7
$337.3%13.7%21.8%1.8%0.002%0%$5.6
$430%10%15.5%4.6%0.037%0%$6.1
$524.6%7.4%7.8%8.8%0.5%0%$6.5
$1012.8%3.1%0%7.1%2.6%0%$7.2
$206.48%0%1.4%2%3%0.018%$7.9
$502.6%0%0%0.54%1.45%0.62%$8.6
Table #7: Percentage of winners wagering different amounts of money on a Straight up bet

Bet size Players losing everything before finishing 30 spins Players losing everything before finishing 50 spins Players losing everything before finishing 75 spins Players losing everything before finishing 100 spins
$1~0%0%0%0%
$20%0%25.5%38.6%
$30%40%53.7%54%
$450.4%50.4%63.5%70%
$557.9%57.9%69.8%75.4%
$1076%84%84%87%
$2087%92%92%93.5%
$5094.7%96.6%97.4%97.4%
Table #8: Percentage of players losing their entire bankroll before finishing 30, 50, 75 and 100 spins

Right at the beginning of the table, you can see quite a strange thing. The chance to end up with more money than you started with is bigger than 50%. In my simulations, 50.9% of players betting $1 ended up with more money than they started with. This happened because of the specific conditions of my simulations, more specifically the number of spins, which is locked at 100.

To be in a profit after 100 spins, the players only needed to win three or more of the spins. A big portion of the players ended up like this, which means they would have only won $8. To sum up, there are a lot of players that won a small amount, which increases the number of overall winners to more than 50%, while the RTP of this strategy is still, of course, lower than 100%.

The higher bets ($10, $20 and $50) all seem too risky to me. Of course, betting $50 Straight up with just a $100 bankroll is a bit too crazy, but 0.62% of the players who did this managed to win more than $5,000. On the other hand, 94.7% of them lost everything in the first two game rounds. It’s similar with $20 and $10 bets, with winners winning less on average and a slightly bigger average play time.

$5 bets are quite interesting, but I’d say they are still a bit too risky for players that want to enjoy the game a bit. With this bet size, you have to win one of the first 20 spins, otherwise you run out of money. If you manage to do it, there’s a pretty good chance you will make it through the entire 100, but it happens only in roughly 42% of cases.

Best bet size to use

The optimum bet size for this specific strategy is somewhere between $2 and $4, in my opinion. It offers a good balance in terms of a sufficient play time and a reasonable chance to win big.

If you want to have a good chance to play through the entire 100 spins and if a smaller win is sufficient for you, the $2 bet size might be the best choice for you. You have a 61.4% chance to play the full 100 spins and a 13.16% chance to have more than $200 after 100 spins.

If you want to have a decent chance to win more, the $3 or $4 bets will be better. You have 1.8% or 4.6% chance to have more than $500 after 100 spins respectively, and there is even a chance you’ll increase your initial bankroll by a factor of 10 or more (0.002% for the $3 bet and 0.037% for the $4 bet). However, that also means you’ll play less game rounds on average and your chance to make it through the full 100 spins is much lower.

Conclusion and recommendations

All things considered, the Constant bet strategy can be interesting for players that want to enjoy the game for some time while also having a reasonable chance to win a more or less substantial amount of money. There are better strategies in terms of RTP or the chance to win a big sum of money, but the ones that are as easy to use as this one are really hard to find.

I strongly advise you to check out other strategies I mention in the Roulette strategies article, as there are other strategies that can bring you better results.

If you decided to use the Constant bet strategy, it wouldn’t hurt to utilize a good bet type and bet size combination. For players starting with $100 and seeking to play 100 game rounds max, these are the best options in my opinion:

  • Color bet - $20 bet per round (20% of the initial bankroll)
  • Corner bet - $3 to $5 bet per round (3% to 5% of the initial bankroll)
  • Straight up bet - $2 to $4 bet per round (2% to 4% of the initial bankroll)

Depending on your preferences, the best combination for you might be different, but these are the ones I prefer. However, these are the best options specifically for the Constant bet strategy. You can achieve better results with other strategies, which is why I recommend you to go back to the main article and check them out.

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