Arbitrage Calculator

Find guaranteed profits by comparing odds across different sportsbooks.

Inputs

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Results

Arb Status Arb Found!
Implied Prob A 40.00%
Implied Prob B 56.52%
Total Implied 96.52%
Stake Side A $100.00
Stake Side B $141.30
Total Stake $241.30
Payout if A Wins $250.00
Payout if B Wins $250.00
Guaranteed Profit $8.70
Profit % 3.60%

How It Works

An arbitrage opportunity exists when the combined implied probabilities from two sportsbooks total less than 100%. This means the books disagree enough that you can bet both sides and guarantee a profit.

First, convert American odds to decimal: for positive odds, decimal = odds / 100 + 1. For negative odds, decimal = 100 / |odds| + 1.

Then calculate implied probability: IP = 1 / decimal. If IP_A + IP_B < 1, an arb exists.

To equalize payouts: Stake B = (Stake A × Decimal A) / Decimal B. Your guaranteed profit is min(Payout A, Payout B) - Total Stake.

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