AI arb calculator: split the stake, lock the profit
arbitrage betting calculator: enter two odds across books and your total stake — it splits the stake so you profit whichever side wins, and tells you when there is no arb.
Nothing is worked out until you tap. Five runs a day, unlimited with a Velvet seat.
How it works
An arbitrage exists when the two implied probabilities add up to less than 100%. The stake is split in proportion to each side's implied probability so the payout is identical whichever side wins.
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About the arbitrage calculator
An arbitrage, or arb, happens when the prices on opposite sides add up to less than 100% implied probability, so betting both locks in a profit whatever the result. Enter the two prices and your total stake and the calculator splits the stake so both sides return the same amount, and shows the guaranteed profit.
How big are arbs?
Usually small, around 1% to 3% of the stake, and they close quickly as prices move.