📝 Labouchere System Calculator
Calculate cancellation betting progressions and analyze risk
System Parameters
Configure your Labouchere sequence
Value of each number in sequence
Comma-separated numbers (e.g., 1,2,3,4)
Your total available funds
Probability of winning each bet
Labouchere Analysis
Target Profit
$0
If sequence completes
First Bet
$0
Opening bet size
Max Bet (5 losses)
$0
After losing streak
Bankroll Status
Sufficient
Risk assessment
How the Labouchere System Works
The Cancellation Method
The Labouchere system uses a sequence of numbers that represent bet units. Your goal is to cross off all numbers.
Betting Rules
- Your bet: Sum of first and last numbers in sequence
- After a win: Cross off the first and last numbers
- After a loss: Add your bet amount to the end of sequence
- Profit achieved: When all numbers are crossed off
Example Progression
Starting sequence: 1-2-3-4
- Bet 1: $50 (1+4=5 units × $10) - WIN → Sequence becomes: 2-3
- Bet 2: $50 (2+3=5 units × $10) - WIN → Sequence complete! Profit: $100
With a loss:
- Bet 1: $50 (1+4=5 units) - LOSS → Sequence becomes: 1-2-3-4-5
- Bet 2: $60 (1+5=6 units × $10) - And so on...
Strategy Tips & Warnings
Choosing Your Sequence
- Conservative: 1-1-1-1 (small, consistent bets)
- Balanced: 1-2-3-4 (moderate progression)
- Aggressive: 2-3-4-5-6 (larger swings)
Risks to Consider
- Sequence can grow rapidly - A few losses extend the sequence significantly
- No guarantee of completion - You may hit table limits or run out of bankroll
- Negative expectation remains - House edge applies to every bet
- Requires discipline - Must stick to the sequence strictly
Best Practices
- Start with short, conservative sequences
- Set a maximum sequence length (e.g., 10 numbers)
- Use a large bankroll (50-100x your target profit)
- Set stop-loss limits before starting