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European vs American roulette

The American wheel adds one pocket (00) — and that single pocket nearly doubles the price of every bet: 2.70% vs 5.26%. Payouts are identical; only the win probabilities differ. At $10/spin over 100 spins that’s ~$27 vs ~$53 in expected cost. If both wheels are in the room, this is the easiest decision in gambling.⚙ computed

Same payouts, different odds

BetPaysWin % EUWin % USEdge EUEdge US
Straight Up35:12.70%2.63%2.70%5.26%
Split17:15.41%5.26%2.70%5.26%
Corner8:110.81%10.53%2.70%5.26%
Dozen2:132.43%31.58%2.70%5.26%
Red1:148.65%47.37%2.70%5.26%

Why America has two zeros

Early European wheels themselves carried 0 and 00 — single-zero was Bad Homburg’s 1843 marketing coup to undercut rival spas, and Europe followed. America kept the older layout, so “American” roulette is simply the pre-reform wheel. One US mercy exists: Atlantic City’s half-back rule refunds half of even-money bets on 0/00, trimming those bets to 2.63% — the closest America gets to la partage.

Same felt, same speed, one decision

Layouts, chips, rituals — identical. Nothing about the American table plays “bigger”; the extra pocket is pure price, which is why this is the rare casino comparison with a clean answer instead of a trade-off.

And the US wheel hides one extra trap: the five-number basket at 7.89%. French rules go the other way — la partage halves even-money cost to 1.35%.

Frequently asked

Which is better, European or American roulette?
European, always: identical payouts, but the missing 00 pocket makes every bet nearly twice as cheap (2.70% vs 5.26%). There is no compensating upside on the American wheel.
Why does 00 change so much?
Payouts are set as if the wheel had 36 pockets. Every real pocket beyond 36 is pure house margin — one zero costs 1/37 of the action, two cost 2/38.