Arb Cruncher is a sports betting calculator that calculates level-profit stakes for arbing (arbitrage), dutching, trading & Draw No Bet betting. This arb calculator allows you to add up to 6 selections. How to use the arb calculator: Enter the odds for the sports arbitrage opportunity. You may use decimal. Calculate Scalps and Sports Arbs instantly. The Scalpulator is a Scalp / Arbitrage calculator for betting on sports. Enter Odds Here: You may enter odds in.