Arbitrage Calculator
Check whether a two-way market produces a true arbitrage, then calculate the exact stake split needed to lock in the same return on either outcome.
Formula
Arb % = (1 / odds1) + (1 / odds2)
When Arbitrage Exists
A true arbitrage exists only when the sum of the inverted odds is less than 1.00. If it is above 1.00, the market still contains bookmaker margin and the guaranteed profit disappears.
Real-World Limits
Stake limits, void rules, timing gaps, and account restrictions can kill an otherwise valid arb. Always confirm both books accept the stake before assuming the trade is real.
Vig Calculator
Check whether the market is even close to fair before you hunt for an arb.
Open toolHedging Calculator
Compare a guaranteed pregame arb to a later-stage hedge when the market moves.
Open toolExecution warning
Arbitrage is operational, not just mathematical. Prices can move before both legs are placed.