Labouchere Calculator

Labouchere calculator: simulate the Labouchere or cancellation system on roulette with your bankroll and unit, and see how often a line gets crossed off and what the bad sessions cost.

Test a strategy

Table limit and stop rules
0 = play every round

How it went

Run a session to see your bankroll spin by spin.

Updated How we calculate →
Spotted a wrong result?Report an errorCorrections log

The Labouchere calculator simulates the cancellation system with your own numbers. You start with a line, here 1-2-3-4, and bet the first plus the last. Win, and you cross both off. Lose, and you add the lost amount to the end. Clear the line and you’re 10 units up. The CasinoCalcs simulator above runs it over thousands of spins and shows how often lines get cleared and what happens in the sessions where they don’t.

Labouchere calculator: a line from start to finish

Line Bet Result
1 2 3 4 5 Lose
1 2 3 4 5 6 Lose
1 2 3 4 5 6 7 Win
2 3 4 5 7 Win
3 4 7 Win

Three wins and two losses and the line is gone: +10 units. That’s the appeal, since each win clears two numbers and each loss only adds one. Run a string of losses, though, and the line grows to 10 or 12 numbers with bets of 20 units or more. The simulator’s “worst session” figure is where you see that.

Bankroll, limits and what really happens

Labouchere is a slower cousin of the martingale: the bets grow by addition rather than doubling. That stretches the bankroll further, but the shape of the results is the same. Lots of small wins, a few heavy losses, and an average that matches the house edge on everything staked. A table limit cuts the system short, which the simulator flags.

Compare it with the Fibonacci calculator, the reverse martingale calculator, or all systems at once on the betting systems simulator.

Crossing numbers off feels like progress. The house edge doesn’t notice. BeGambleAware.org has free support if that’s hard to stop.

Frequently asked questions

How does the Labouchere system work?

Write a line of numbers, such as 1-2-3-4. Each bet is the first number plus the last. If you win, cross both off; if you lose, add the amount you lost to the end. When the line is gone, you've won its total.

How much do you win with Labouchere?

The sum of the starting line in units. With 1-2-3-4 and a £1 unit, a completed line wins £10.

Does the Labouchere strategy work?

Each completed line is a small win, but losing streaks make the line and the bets grow quickly. The house edge on every bet stays the same, so on average you still lose.

Why does Labouchere seem to win so often?

Every win removes two numbers and every loss adds only one, so you finish a line with just over one win in three. The losses that don't finish are big.

More Roulette calculators

View all →