What It Pays
An even-money bet wins when the ball lands in any of the eighteen numbers it covers. The payout is 1 to 1: you get your stake back plus an equal amount.
There are six of them, in three opposed pairs: red or black, odd or even, high (19–36) or low (1–18). All six behave identically. Backing red and black at the same time is not a hedge but a guaranteed small loss — the two stakes cancel on every number except zero, where both lose.
A Payout With Nothing Taken Out
Eighteen numbers out of 36 non-zero pockets would win exactly half the time, and a 1:1 payout on a 50% chance is break-even. Unlike the straight up, which is short a full chip out of 36, or the corner, short a quarter, there is nothing missing from this payout at all.
The cost arrives from somewhere else entirely. A European wheel has 37 pockets, not 36, and the thirty-seventh is green. It belongs to neither colour, neither parity, neither half. When it lands, every even-money bet on the table loses, and that single pocket is the whole house edge:
Two completely different mechanisms, the same price. Inside bets are underpaid. Even-money bets are paid correctly and lose to a pocket that cannot pay them. Every bet on the layout arrives at 2.70% by one route or the other, which is the point of ranking them all.
The Only Real Discount in Roulette
Because the entire cost of an even-money bet sits in one pocket, a rule that changes what happens in that pocket changes the price directly. French tables have two such rules, and they apply to even-money bets alone.
La partage — "the sharing". When zero lands, you lose half your stake instead of all of it. En prison — the stake is held for one more spin; win it and you get the stake back with no profit. Both cut the cost of the zero in half, and so both cut the house edge in half:
| Table | Even-money cost | Every other bet |
|---|---|---|
| French (la partage or en prison) | 1.35% | 2.70% |
| European (single zero) | 2.70% | 2.70% |
| American (double zero) | 5.26% | 5.26% |
1.35% is the cheapest price on any roulette table anywhere, and it is not a system or a technique — it is a rule on the felt, printed on the layout, available to anyone who reads it before sitting down. An even-money bet at a French table costs a quarter of what the same bet costs at an American one. How to recognise the rule and what it does not cover is worth five minutes before your next session; note in particular that it does nothing for inside bets.
Losing Streaks, Measured
At 48.65%, droughts in the ordinary sense do not exist: a hitless run of even ten spins happens roughly once in eight hundred. What does happen, constantly, is the losing streak — and because the loss probability is 19/37, slightly above half, streaks run a little longer than coin-flip intuition expects.
Read those as frequencies, not as warnings. A run of six losses happening once in fifty-five attempts means that across a fifty-spin session it is close to ordinary, not remarkable. Nothing in the table above says anything about the next spin: after ten losses, the chance of an eleventh remains 51.35%, because the wheel has no record of the previous ten.
Why the Martingale Breaks
The streak table is exactly what the Martingale is built on. Double after every loss, and one win recovers everything plus one unit. The logic is sound and the arithmetic is correct. It fails on a detail that has nothing to do with probability.
The table maximum is the end of the ladder. Seven losses in a row is not a rare event — it turns up about once in every hundred attempts, which is roughly once every few sessions for anyone running the system seriously. When it arrives you cannot place the recovering bet, and you are down $635 on a sequence designed to win $5. The hundred successful attempts before it earned $500 between them.
The deeper answer is that no betting pattern can change the price. Every spin in the ladder is priced at 2.70% of whatever is on it, and rearranging the order of stakes rearranges the sequence of purchases without touching the cost of any of them. A Martingale on a French table still costs 1.35%, for the same reason: the rule, not the pattern, is what moved the number.
What an Hour Costs
A live table runs near fifty spins an hour, and even-money bets carry the game's higher table minimums.
Same chips, same bet, same hour. The only variable is which table you chose, and the spread between the top and bottom rows is a factor of four. The calculator will do it for your own stake.
Reality check: even-money bets are the right place to start because they are the cheapest and the steadiest, not because they are winnable. At 1.35% on a French table you still lose 1.35 cents of every dollar, over any length of play long enough for the average to mean anything. The decision that matters is made before the first spin, and it is which wheel you sit at.
Play with the math on your side
SlotDrop's free tools show you the real house edge, EV and variance behind every bet — before you place it.
Open the Black Box →Reality check: no strategy on this page turns a negative-expectation game into a positive one. Strategy reduces how much the house takes and how fast your bankroll disappears — it does not guarantee profit. Only ever bet money you can afford to lose entirely.