Roulette Single Number Bet: How the Straight Up Works

Roulette may look complex, but the straight up, or single number bet, is one of its simplest parts. 

This guide explains how it works, what the odds and potential payouts mean, and how it differs between European and American roulette. You’ll learn the essentials in plain English, so you can better understand how this classic bet functions before deciding whether it fits the way you like to play.

What Is a Straight Up Bet in Roulette?

A straight up bet means placing a wager on one specific number on the roulette table, such as 7, 20, or 0. 

You put your chip directly in the centre of that number’s square. If the ball lands in that numbered pocket on the wheel, you win. If it lands elsewhere, the bet loses.

In the UK, most games use European roulette, which has 37 pockets (numbers 0 to 36). The single zero creates a built-in advantage for the casino called the house edge. Every number has the same chance of being selected, so no number is “better” or “worse” than another.

How Do You Place a Single Number Bet on the Roulette Table?

On a European roulette table, each square represents one possible outcome. To place a straight up bet, choose your chip value and put it on the number you want.

You can also place chips on several numbers if you wish, as each chip is treated as its own bet. Once all bets are made, the wheel spins and the ball lands in a numbered pocket. If that pocket matches your number, the dealer pays out the win.

Before placing a bet, it can be helpful to check:

  • The minimum and maximum stake limits on that table
  • The type of roulette wheel (European or American)
  • The paytable, which lists the potential payouts for each bet

Single Number Roulette Betting Strategy Explained

A straight up bet in European roulette covers one number out of 37, giving a probability of around 2.70% per spin. Each spin is independent, meaning past results have no influence on the next one.

Some players prefer betting on the same number, while others spread chips across several numbers. Neither method changes the game’s built-in odds. Roulette is entirely random, so no system can alter its outcomes.

To keep play sensible, you might:

  • Decide in advance how much to spend
  • Take regular breaks
  • View it as a form of entertainment, rather than a way to make money

What Are the Odds and Payouts for Straight Up Bets?

In European roulette, a winning straight up bet pays 35 to 1. For instance, a £1 bet on a number that wins would return £35 in winnings plus your £1 stake, totalling £36.

The true odds of hitting a specific number are 36 to 1, but casinos pay slightly less to maintain a house edge of around 2.7%. This ensures that, over time, the casino gains a small profit while the game remains fair for players. 

Is the Single Number Bet Different in European and American Roulette?

The basic rule of a straight up bet is the same in both versions: pick a number and hope the ball lands there. The key difference is the wheel design.

  • European roulette: 37 pockets (0–36)
  • American roulette: 38 pockets (0–36 plus 00)

The additional double zero in American roulette changes the probability to about 2.63% and increases the house edge to roughly 5.26%. In the UK, most licensed casinos and online platforms use the European version, but it’s always worth checking before you play.

When Might Players Use a Single Number Bet?

A single number bet may appeal to those who like clear outcomes. It’s simple: one chip, one result. 

Some players might mix straight up bets with broader wagers like red or black to try and balance higher potential returns with more frequent results.

The choice depends on your playing style. If you prefer fewer, but possibly higher wins, straight ups may appeal more. If you prefer the possibility of more regular wins, bets that cover several numbers might suit you better.

Pros and Cons of Betting on a Single Number

Pros:

  • Highest standard payout (35 to 1)
  • Straightforward and easy to understand
  • Same principle online or in land-based casinos

Cons:

  • Low probability of winning (about 2.7%)
  • Wins tend to occur less often than broader bets

The straight up bet doesn’t guarantee returns, but offers one of the clearest ways to understand roulette’s structure.

How Does a Straight Up Bet Compare to Other Roulette Bets?

Roulette bets are divided into inside bets (fewer numbers, higher potential payouts) and outside bets (more numbers, lower possible payouts). Examples include:

  • Straight Up: 1 number, pays 35 to 1
  • Split: 2 numbers, pays 17 to 1
  • Street: 3 numbers, pays 11 to 1
  • Corner: 4 numbers, pays 8 to 1
  • Red/Black: 18 numbers, pays 1 to 1

The more numbers you include in a bet, the higher the chance of a result matching one of them, but each win pays less. Because roulette is a random game of chance, no outcome can be guaranteed — even bets that cover many numbers can still lose.

Explore Roulette Games Online at Dream Jackpot

If you are interested in trying roulette options, Dream Jackpot has plenty to explore. Our site is licensed by the UK Gambling Commission, meeting strict standards for safety and fairness.

Our library includes classic European roulette alongside other popular versions and table games. Whether you want to compare bet types or see how different layouts feel, log in or join Dream Jackpot to browse the full collection.

Everything you need to make informed choices is shown within each game, including rules, paytables, and the table limits that apply. Set limits that suit you and take breaks when you need them. If you ever want support or advice, our help resources are available.

*All values (Bet Levels, Maximum Wins etc.) mentioned in relation to these games are subject to change at any time. Game features mentioned may not be available in some jurisdictions.

**The information provided in this blog is intended for educational purposes and should not be construed as betting advice or a guarantee of success. Always gamble responsibly.