Arbitrage Calculator
Free arbitrage (arb) calculator. Enter the best odds on each side at two books and your total stake to see how to split it and the profit locked in.
The picks behind the math
LineScout gives the chance each NFL bet hits, the best price across 7 books, and a record graded in public. In beta: the first 100 sign-ups get Pro free.
Get LineScout freeWhat an arb is
When two books disagree enough, you can bet both sides and win whichever happens. It shows up when both sides' implied probabilities add up to less than 100%.
How the stakes split
Each side gets the total stake × its implied probability ÷ the two implied probabilities added together. That makes both outcomes pay the same amount.
The catch
Arbs are small and close fast, books limit accounts that take them, and a voided or changed leg breaks the math. LineScout's Prices card shows the best price at each book for every game.
More free tools: Parlay Calculator · Odds Converter · Implied Probability Calculator · No-Vig Fair Odds Calculator · Expected Value (EV) Calculator · Kelly Criterion Calculator · Hedge Calculator · Win Rate & ROI Calculator
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