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Free Arbitrage Betting Calculator

Written By John Carlo Villaruel | Last Updated at March 24, 2026

Seasoned sports bettors know that arbitrage betting – if executed well – is a way to almost always come out ahead when you’re placing sports wagers. However, you need to be precise, which is why you should use an arbitrage calculator.

You can use the calculator on this page to speed up your calculations and to reduce human error. We’ll also briefly touch on what arbitrage betting is, and when to avoid using it. Plus you’ll get an overview of what computations the calculator performs to help you determine the wagers to place on different outcomes. Read on for the details.

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When do you use an arbitrage betting calculator?

For nearly as long as there has been sportsbetting, there have been bettors who seek out different ways to win money. Arbitrage betting is one such method, as bettors take advantage of discrepancies such as different odds between sportsbooks, betting sites that move their lines at different speeds, human error and similar. You’re looking for probabilities on outcomes that add up to less than 100% and place one bet per outcome at different sportsbooks.

StrategyUsing math to cover all outcomes.
RiskTheoretically zero, but only if executed perfectly (which isn’t always possible).
GoalWin money on your sports wagers.
Other notesThe strategy usually requires using multiple sportsbooks.

Is it risky to engage in arbitrage betting?

This style of betting carries risk. If it’s not perfectly executed, you’ll lose money. And secondly, if a sportsbook suspects you’re using arbitrage, they may suspend your account, as some betting sites prohibit the use of this strategy.

How does the arbitrage betting calculator work?

The calculator essentially computes the following:

  1. Converts the odds to implied probabilities.

  2. Checks if the implied probabilities add up to less than 100%.

  3. Calculates your stake amounts for each outcome.

Pros and cons of using an arbitrage betting calculator

Pros and Cons
Pros and Cons
  • Get a return profit if the arbitrage bet is perfectly executed
  • Take advantage of discrepancies between sportsbooks
  • Quick and easy to determine your wagers
  • Some brands may suspend your account if they suspect arbitrage betting

Final thoughts on doing these arbitrage calculations

Arbitrage betting can be a solid strategy to minimize risk and claim a return on your bets when executed perfectly. To do so, you take advantage of discrepancies in odds between sportsbooks and place opposing bets on two different betting sites. If you plan on using arbitrage, then we highly recommend you use the calculator on this page. Just be sure you understand the risks, plus you need to understand that there is no guarantee that you’ll win, even if you’re using arbitrage.

Arbitrage calculator FAQ

🔢 Is an arbitrage betting calculator the same as a dutching calculator?
No, you use them for different purposes. Arbitrage betting is designed to help you win by placing bets across all outcomes where there is some sort of discrepancy (usually among different sportsbooks), while dutching seeks to minimize risk.
🏇 Do you need to use an arbitrage betting calculator?
No. But manual calculations take longer, plus they introduce a higher chance of making an error, so we recommend using the calculator.
🤔 What are some situations where arbitrage betting will be difficult or it won’t work?
Problems include mathematical errors, not enough capital to spread out your wagers, a sportsbook who changes odds before confirmation of your wager, and similar issues.