Tools · Monte Carlo
Martingale Simulator
How often the doubling progression breaks, and what it costs when it does.
Base bet
Table limit
Spins
Sessions
Distribution of session resultsloss ← | → profit
−$1,000$0+$650
hover a bar · red bars are losing sessions, green winning, the pale bar straddles $0
Reading the result
With a $10 base and a $1,000 limit the progression can absorb 6 consecutive losses. In 21.8% of 2,000 sessions of 100 spins it hit that wall at least once. Most sessions still end slightly ahead (61.3%); the mean is −$86.56 because the broken sessions are expensive.
Method and assumptions
Even-money bets from a $1,000 bankroll. Doubling after each loss; reset to base after a win or when the next doubling would exceed the limit. Seeded generator.