Roulette, blackjack and table games
Is double-zero roulette worse than single-zero roulette?
Direct answer
Single-zero European roulette has 1 zero among 37 pockets and ~2.70% edge on standard bets; double-zero American roulette has 2 zeros among 38 pockets and ~5.26% edge.
How to use this answer
This answer is based on the mathematical principle or published rule identified in the source below. If the question involves a live betting market, confirm its settlement definition before applying it to a specific bet.
Yes for standard bets: the theoretical house edge is about 5.26% for American double-zero versus 2.70% for European single-zero.
Separate the game’s mathematical probabilities from the casino’s house procedure. The odds may be calculable even where split, surrender, side-bet or payout policies differ between tables.