Roulette Sector Betting Calculator

Calculate odds and payouts for roulette sector bets including Voisins du Zéro, Tiers du Cylindre, Orphelins, and custom neighbor bets.

Formula:P(win) = Numbers / Total Wheel Numbers

Coverage

17 numbers

45.9% of wheel

Total Bet

$45

9 chips

House Edge

2.7%

Win Probability

45.95%

Neighbors of Zero - covers 17 numbers near 0

European has better odds

$

Amount on each chip

Numbers Covered (17)

22182972812353260321519421225

Classic Sectors Comparison

SectorNumbersChipsCoverage
Voisins du Zéro17945.9%
Tiers du Cylindre12632.4%
Orphelins8521.6%
Jeu Zéro7418.9%

European Wheel Sections

Voisins (46%)Tiers (32%)Orphelins (22%)

Together these sectors cover the entire wheel

Key Facts

  • •Sector bets cover physically adjacent wheel numbers
  • •Voisins du Zéro covers 17 numbers (46% of wheel)
  • •Tiers du Cylindre covers 12 numbers (32% of wheel)
  • •Orphelins covers the remaining 8 numbers (22%)
  • •House edge is unchanged by betting pattern
  • •Useful for exploiting potential wheel biases

Frequently Asked Questions

What is sector betting in roulette?

Sector betting covers groups of numbers that are physically adjacent on the roulette wheel (not the table layout). Popular sectors include Voisins du Zéro (17 numbers around zero), Tiers du Cylindre (12 numbers opposite zero), and Orphelins (8 remaining numbers).

Does sector betting reduce the house edge?

No. Sector betting does not change the house edge - it remains 2.70% on European wheels and 5.26% on American wheels. However, it allows you to bet on physically adjacent numbers, which some believe can be exploited if a wheel has bias.

What is a neighbors bet?

A neighbors bet covers a chosen number plus typically 2 numbers on each side of it on the wheel (5 numbers total). Each number gets a straight-up bet. This is popular for players who believe certain wheel sections hit more often.

What is Voisins du Zéro?

Voisins du Zéro ("Neighbors of Zero") covers 17 numbers from 22 to 25 on the wheel, centered around zero. It requires 9 chips placed on specific splits and corners, covering about 46% of the wheel.