Calculate guaranteed profit opportunities when odds differ across sportsbooks.
Two-Way Arbitrage
Bet on Outcome 1:
Bet on Outcome 2:
Guaranteed Profit:
ROI:
What is Arbitrage Betting?
Arbitrage betting (or "arbing") exploits differences in odds between sportsbooks to guarantee a profit
regardless of the outcome. When bookmakers disagree enough on the probability of outcomes, you can bet
on all possibilities and lock in a positive return.
For an arb to exist, the sum of implied probabilities must be less than 100%. The calculator above
tells you exactly how much to stake on each side to maximize your guaranteed profit.
How to Use
Find different odds for the same event at two sportsbooks
Enter both odds in American format (e.g., +150, -110)
Enter your total stake amount
Click Calculate to see if an arb exists and how to split your bets
⚠️ Important Notes
Arb opportunities are rare and usually small (1-5% ROI)
Lines can move fast—confirm odds before placing bets