Surebet Calc
Guaranteed return from a surebet across books.
How to Use This Calculator
- Enter your total investment amount
- Enter the best odds for each outcome, pulled from different bookmakers
- For 3-way markets (e.g., soccer), use all 3 default outcome fields
- Add or strip outcomes to match different market types
- If a surebet is on the table, see the optimal stake for each outcome and your guaranteed profit
Formula
Surebet Check: Sum of (1 / Odds) for all outcomes < 1
ROI = (1 / Sum of Inverses - 1) × 100%
Individual Stake = Total Investment × (1 / Odds_i) / Sum of Inverses
Guaranteed Profit = Total Investment / Sum of Inverses - Total Investment
Frequently Asked Questions
What is a surebet?
A surebet — also called an arbitrage bet or arb — is a setup where you back every possible outcome of an event across different bookmakers and lock in a profit no matter the result, by exploiting the gaps in their odds.
How is a surebet different from arbitrage?
They’re one and the same. Surebet is the go-to term in European markets, while arbitrage betting is the more technical American label. Both mean backing every outcome across different bookmakers for a guaranteed profit.
What ROI should I expect from surebets?
Typical surebet windows deliver 1-5% ROI. Fatter margins are rare and vanish fast. Even slim percentages can pay off with bigger investments and high volume.
Can bookmakers ban me for surebetting?
Surebetting is legal, but bookmakers may limit or shut accounts they suspect of it. Spreading bets across multiple accounts, varying your stake sizes, and blending surebet activity with regular bets can help dodge detection.