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High\Low (18-36) Bet

Last updated: 18.07.2023 by Andrew Shepard

As is known, European roulette has a single 0, while American roulette has 0 and 00. When you remove these pockets, 36 numbers remain on the wheel of both variants. It is possible to categorise these numbers in different ways. For example, you can divide them into two groups of 18 numbers according to their colour (red/black). Likewise, it is possible to make a distinction according to whether they are odd or even.

Another way to do this is to divide the 36 numbers into two groups, "low" and "high". The Low category covers all numbers from 1 to 18. The High category includes all numbers between 19 and 36. You can bet on any of these options: whichever you choose, you will be betting on a total of 18 numbers.

Therefore, the odds of winning and the payout are indistinguishable from other bets that cover the same numbers (e.g., odd/even). A High/Low bet pays 1:1, and the chance of winning is either 48.60% (European roulette) or 47.40% (American roulette).

High\Low (18-36) Bet
Odds for 0 version 47.4%
Odds for 00 version 48.6%
Payout 1:1
Expected value ($1) -0.0271

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Testing High/Low Bets with a Roulette Simulator

In order to see the short and long-term effects of roulette bets, we run simulations with multiple players and give each player a different wager amount. In this way, we can also see how roulette bets affect different bankrolls. In our simulation for the High/Low bet:

  • We used four players and gave each a 1,000 GBP bankroll,
  • Each player used different wager amounts (5 GBP, 10 GBP, 20 GBP, 50 GBP),
  • We performed a total of 1,000 spins.

You can see the results in the Google Sheets chart below.

High\Low (18-36) Bet test

Players playing with 5 GBP and 10 GBP achieved the most stable results. Player 2 (10 GBP) was able to complete the simulation with a profit, while Player 1 (5 GBP) lost very little. After 200 spins, we can safely say that the High/Low bet has become a very good choice for low budgets. Surprisingly, our high roller player (50 GBP) started to get very good results after 250 spins. The only player who went bankrupt was the one who played with 20 GBP, but his bankruptcy occurred after 800 spins.

As long as you play with low budgets (up to 10 GBP), High/Low bets will satisfy you more than enough. If you prefer to play with at least 50 GBP per round, the volatility on the win/loss curve can start to bother you after a while. In this respect, High/Low does not differ significantly from other outside bets.

Strategies and Systems for High/Low Bets

High/Low is a simple but effective roulette bet that is adaptable to almost all roulette strategies. It is possible to further increase its effectiveness by using uncomplicated systems. Below we list some of the strategies best suited to use with this type of bet.

Fibonacci Strategy

Fibonacci is a progressive strategy similar to Martingale, but the wagers are increased according to the Fibonacci sequence. Each digit in this sequence is the sum of the previous two digits and looks like this: 1, 1, 2, 3, 5, 8, 13, 21, 34, etc. If you lose, you determine what the next wager will be based on this sequence. If you win, you must go back two numbers in the sequence and continue the cycle. You can learn more by checking out our article on the Fibonacci system.

Labouchere Strategy

As we explained in our article on the Labouchere system, this strategy may seem a bit complicated at first glance and requires taking notes. However, it is quite easy to use once you understand how it works. Let's explain with an example:

  • First, determine the amount you want to earn. In this example, let's say you want to make a profit of 10 GBP.
  • Divide this amount into smaller units. Ideally, you should divide it into 6-7 units, for example, 1 – 1 – 1 – 2 – 2 – 2 – 1 (these units add up to 10). There is no restriction in this regard, you can choose a sequence such as 2 - 3 - 2 - 2- 1, too if you want, but the smaller the numbers, the more controlled the wager increase will be.
  • In your first bet, use the sum of the extreme two digits in the sequence you created. For example, in the above sequence, the result is 2 (1 + 1)
  • If you win the bet, subtract the two numbers you used from the sequence and use the remaining numbers to determine the next wager amount.
  • If you lose, add the wager amount you lost to the end of the sequence and keep repeating the cycle.
  • Keep doing this until you've deleted all the digits in the sequence.

36 Strategy

This is a multiple-wager strategy, meaning you place multiple bets per round, and only one of them will be High. The 36 strategy has tied this to a specific system, and you need to place your wagers as follows:

  • Bet 10 GBP for 0.
  • Bet 130 GBP on the First Dozens.
  • Bet 30 GBP on Six Lines (13, 14, 15, 16, 17, 18)
  • Bet 210 GBP for High (19-36)

You have invested a total of GBP 380. This game can end in four different ways:

  • If 0 wins, you make 20 GBP profit (2.7% chance)
  • If First Dozens wins, you get 10 GBP profit (32.43% chance)
  • If Six Line wins, you make 200 GBP profit (16.22% chance)
  • If High wins, you get 40 GBP profit (48.65% chance)

You can change the wager amounts, but make sure they follow the example above in terms of ratio. This strategy may be lucrative in the short run but not so useful in the long run.

36 Roulette System

A Popular Option Among Outside Bets

We can repeat what we said for Red/Black and Odd/Even for High/Low, too, as technically, these bets are all the same: they have no difference in terms of winning chances and payouts. Due to the high chance of winning, especially in the European variant, High/Low can be a good choice for players of all experience levels and any bankroll. However, instead of using it in a "vanilla" form, we recommend combining it with different types of bets and/or trying to integrate it into creative roulette strategies. This way, you can make it much more effective and get a bigger payout potential.

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