Straight-up or red/black, every roulette bet loses the same fraction over time. The secret is the zero — where the house edge quietly lives.
Roulette House EdgeLive
the math always wins
Expected value per $10 bet
−$0.53
house edge 5.26% · American (00) wheel
every bet type has the same edge — the wheel is undefeated
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Presets
Roulette payouts are set as if the wheel had no zeros — but it does. That extra 0 (and 00 on American wheels) is where the house edge lives: every bet, from a single number to red/black, carries the same expected loss of 5.26% American or 2.70% European. No betting system changes it, because each spin is independent.
Reading this result: The extra 00 pocket drives the American-wheel edge to 5.26%: on Red/Black (18) you lose an average of $0.53 per $10 staked, no matter which bet type you pick.
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How it works
Roulette payouts are calculated as if the wheel had only its numbered slots, but the 0 (and 00 on American wheels) tips every wager against you. The result is a fixed expected loss of 5.26% American or 2.70% European on all bet types. Because spins are independent, no betting system can overcome it — the mathematics is airtight. Educational tool, not gambling advice.
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