Roulette Bet Analyzer

Build custom betting patterns on our interactive roulette table and instantly see the mathematical reality behind every wager. This tool demonstrates why all roulette betting strategies face the same house edge, no matter how clever they seem.

Select Your Wheel Type

The number of zeros determines the house edge

Click Numbers to Place Bets

Click any number or betting area. Selected bets are highlighted in gold.

Quick Bet Patterns

Understanding Roulette Odds

Roulette is one of the most straightforward casino games mathematically. Every bet (except one on the American wheel) has the same house edge, making it a perfect example of how probability theory applies to gambling.

The mathematics are simple: the casino pays you as if there were no zeros, but the zeros exist. On a European wheel with 37 numbers (0-36), a straight-up bet pays 35:1, but true odds are 36:1. That gap is the house edge.

All Roulette Bet Types

Bet Type Numbers Covered Payout European Edge American Edge
Straight Up 1 35:1 2.70% 5.26%
Split 2 17:1 2.70% 5.26%
Street 3 11:1 2.70% 5.26%
Corner 4 8:1 2.70% 5.26%
Five Number 5 6:1 N/A 7.89%
Six Line 6 5:1 2.70% 5.26%
Column/Dozen 12 2:1 2.70% 5.26%
Red/Black/Odd/Even 18 1:1 2.70% 5.26%
1-18/19-36 18 1:1 2.70% 5.26%
Warning - The Five Number Bet: On American roulette, the "five number bet" (0, 00, 1, 2, 3) has a house edge of 7.89%—nearly 50% worse than any other bet. The Nevada Gaming Control Board requires casinos to disclose this, but many players miss it. Always avoid this bet.

Why Betting Systems Don't Work

One of the most important lessons from our Roulette Spin Analyzer is that each spin is completely independent. This tool demonstrates a related truth: no combination of bets changes the overall house edge.

Whether you bet:

  • A single number for 35:1 potential
  • All red numbers at even money
  • A complex pattern covering 24 numbers
  • Multiple bets "hedging" each other

The expected loss rate remains the same: 2.70% on European wheels, 5.26% on American wheels. According to research from the UNLV International Gaming Institute, this mathematical certainty is why roulette has been profitable for casinos since its invention in 18th century France.

Did You Know? The famous story of roulette wheel bias hunters shows the only legitimate way to beat roulette: finding physically imperfect wheels. Modern casinos prevent this with precision manufacturing and regular wheel audits. Without a biased wheel, no strategy can overcome the math.

The Psychology of Bet Coverage

Many players feel safer betting more numbers. If you cover 24 out of 37 numbers, you win 65% of spins! But this psychological comfort is misleading.

More coverage means:

  • Higher win frequency (feels good)
  • Lower payout per win (smaller wins)
  • Same expected loss rate (the math doesn't change)

This connects to the cognitive biases we explore in our Gambling Fallacy Demonstrator. Our brains prefer frequent small rewards over rare large ones, even when the mathematics are identical.

European vs. American Roulette

If you ever have a choice, always play European roulette. The single zero wheel has nearly half the house edge of the American double-zero wheel:

European (Single Zero)
2.70%
house edge
American (Double Zero)
5.26%
house edge

Over time, this difference is massive. Playing $10 per spin for 100 spins:

  • European: Expected loss of $27
  • American: Expected loss of $52.60

The American wheel exists purely because early Nevada casinos wanted more profit. According to the American Gaming Association, this tradition persists despite being objectively worse for players.

Using This Tool Effectively

This analyzer helps you understand roulette mathematics, not "win" at roulette. Use it to:

  1. See the constant edge: No matter what combination you try, the house edge stays the same
  2. Understand coverage vs. payout: More numbers covered = more frequent wins but smaller payouts
  3. Compare wheel types: Visualize why European roulette is always the better choice
  4. Debunk "systems": Test any betting pattern and see it has the same expected loss
The Mathematical Truth: Roulette is a game of pure chance with a fixed house edge. No betting pattern, progression system, or "hot/cold" number tracking can change this. The only winning move is understanding the math—and setting a budget you can afford to lose for entertainment. For more on responsible gambling practices, visit the National Council on Problem Gambling.

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Remember: This tool is for educational purposes only. Roulette cannot be beaten through betting strategies. If you choose to play, understand that the house always has the edge. If you or someone you know is struggling with gambling, the National Problem Gambling Helpline is available 24/7 at 1-800-522-4700.