EdgeGoatArbitrage Calculator
Split your total stake across opposing sides to lock in a return when the market diverges.
How to use the Arbitrage Calculator
Arbitrage (or "arbing") means betting both sides of the same market across different books, at prices that together imply less than 100% probability. Done correctly, you collect the same payout no matter which side wins, as long as every bet is accepted and settles at the price you took. Books can void, limit or re-price bets, so an arb is not risk-free.
Enter your total combined stake and the odds on each opposing side. The calculator splits the stake proportionally so each side pays the same total return. The result panel shows your locked-in payout, profit, and ROI if every leg settles as priced. If the market is not an arb (combined implied prob > 100%), you'll see a warning instead.
In practice: arbs disappear fast, sportsbooks limit accounts that exploit them aggressively, and execution risk (line movement between your two bets) can wipe out the margin. Use this for in-game live arbs, prop-vs-spread mismatches, or to verify a sharper bettor's "lock" before you risk capital.