Main page Payouts

100/1 Roulette payouts, with the return worked out

100/1 Roulette advertises its top payout in the name and leaves the rest of the paytable to be discovered. The rest is where the game earns its keep. Here is each bet's payout against its real chance, with the return and the house edge, and a comparison with the standard wheel most players know.

The paytable with probabilities

Bet Covers Pays Chance Return Edge
Straight-up 1 100:1 0.95% 96.19% 3.81%
Split 2 49:1 1.90% 95.24% 4.76%
3-number 3 32:1 2.86% 94.29% 5.71%
Corner 4 24:1 3.81% 95.24% 4.76%
5-number 5 19:1 4.76% 95.24% 4.76%
10-number 10 9:1 9.52% 95.24% 4.76%
15-number shape line 15 11:2 14.29% 92.86% 7.14%
20-number block 20 4:1 19.05% 95.24% 4.76%
Red / black, odd / even 50 1:1 47.62% 95.24% 4.76%

Return is what the bet gives back on average per £1 staked over the long run. Edge is what the house keeps.

Reading the table

Most bets sit at 95.24%, which is 100 winning-equivalent positions out of 105. The straight-up is slightly better at 96.19% because 101 of 105 is returned on a hit. The three-number bet is worse at 94.29% because 32:1 rounds down more harshly than the others, and the shape line is worst at 92.86% because 11:2 on fifteen positions is a long way below fair.

In pounds, 100 spins at £1

Bet Expected loss
Straight-up £3.81
Red £4.76
3-number £5.71
Shape line £7.14
For comparison: any bet on a single-zero wheel £2.70

Red here costs 76% more per spin than red on a European wheel; the shape line costs more than two and a half times as much.

The 100:1 in context

£1 on a number wins £100 once in 105 spins on average. The chance of going 200 spins without a hit on a chosen number is about 15%; 300 spins, about 6%. The win is real and the drought is long. On a 37-pocket wheel the same £1 wins £35 once in 37 spins, roughly three times as often for a third of the payout, and at a lower cost per spin.

Shapes as bets

Each green shape is a straight-up at 100:1 with the same 0.95% chance as any number. Backing a shape is a way of being on the house's side of the outside bets for one spin; it does not hedge anything, because it is simply another 100:1 shot at 3.81%.

Compared with a wheel

For every bet type, 100/1 Roulette is more expensive than a single-zero wheel; the three-number bet and the shape line are more expensive than an American wheel too. The game is sold on the payout, and it is not a trick: 100:1 is paid. The price is built into the five shapes, and it is a price worth knowing before the turbo button starts turning spins over every three seconds.

Frequently asked

Why is the straight-up the best bet in 100/1 Roulette?

It gives up four positions in 105 (fair would be 104 to 1, it pays 100 to 1), a 3.81% edge. The even-money bets give up five positions in 105, 4.76%. It is the reverse of a normal wheel, where every bet costs the same.

What does £1 on a number win?

£100 in winnings plus the £1 back, £101 returned. On a 37-pocket wheel the same bet returns £36. The chance is 1 in 105 against 1 in 37.

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