Arbitrage calculator
When two different books price both sides of the same two-outcome market such that the combined implied probability is under 100 percent, you have an arb. Enter both prices and your total stake; we return the optimal split and the guaranteed profit.
Impl 33.33%
Impl 64.29%
Arbitrage check
Combined implied
97.62%
Profit percent
2.44%
Arbitrage exists. Split stake per below to lock in guaranteed profit.
Stake on Side A
$34.15
Payout if Side A wins: $102.44
Stake on Side B
$65.85
Payout if Side B wins: $102.44
Reality check on arbitrage
Arbitrage exists but it is not a sustainable income strategy at modest bankrolls. Books notice arb activity fast. Consistent arb players get their accounts limited or banned within weeks; the typical arb window at US books is 3 to 6 months of limited action before the books stop you.
Arb is best used tactically: to turn a stuck ticket into a guaranteed profit when the market moves your way, or to equalize a small mispricing when you happen to see it. Treat it as opportunistic, not a primary strategy. And remember: a 2 percent arb tied up in two books for a day is equivalent to less than 100 percent APR if you rotate the capital perfectly, which is hard in practice.
No-vig calc · EV calc · Hedge calc
Arbitrage exists but it is not a sustainable income strategy at modest bankrolls. Books notice arb activity fast. Consistent arb players get their accounts limited or banned within weeks; the typical arb window at US books is 3 to 6 months of limited action before the books stop you.
Arb is best used tactically: to turn a stuck ticket into a guaranteed profit when the market moves your way, or to equalize a small mispricing when you happen to see it. Treat it as opportunistic, not a primary strategy. And remember: a 2 percent arb tied up in two books for a day is equivalent to less than 100 percent APR if you rotate the capital perfectly, which is hard in practice.
No-vig calc · EV calc · Hedge calc