Arbitrage Calc
Cover all outcomes across books for guaranteed profit.
How to Use This Calculator
- Punch in the odds for every outcome, pulled from different bookmakers
- Set your total stake — the amount you’re putting to work
- Need more outcomes? Add them (think 3-way markets like soccer)
- When an arb is live, you’ll see the optimal stake per outcome and the profit you’re locking in
Formula
Arbitrage Check: Sum of (1 / Odds) for all outcomes < 1
Arbitrage Percentage = (1 - Sum of Inverses) × 100%
Individual Stake = Total Stake × (1 / Odds_i) / Sum of Inverses
Guaranteed Profit = Total Stake × Arbitrage Percentage / (1 - Arbitrage Percentage)
Frequently Asked Questions
What exactly is arbitrage betting?
Arbitrage betting (a.k.a. surebetting) means covering every possible outcome of an event across different bookmakers, locking in profit no matter who wins. It works by cashing in on price gaps between bookmakers.
How do I spot an arbitrage opportunity?
Line up the odds for the same event from several bookmakers. If the inverse odds (1/odds) for all outcomes add up to less than 1, you’ve found an arbitrage.
Is arbitrage betting legal?
In most jurisdictions, yes — it’s perfectly legal. The catch is that bookmakers may limit or shut down accounts they suspect of arbing, since it picks apart their pricing inefficiencies.
What kind of profit margin should I expect?
The vast majority of arbs land in the 1-5% range. Bigger margins do show up — usually right when odds first drop or when lines start moving — but they’re the exception, not the rule.