Surebet Betting Calculator
Guaranteed return from prices across books.
How to Use This Calculator
- Input your total investment amount
- Input the best odds for each outcome from different bookmakers
- For 3-way markets (e.g., soccer), use all 3 default outcome fields
- Add or remove outcomes to match different market types
- If a surebet exists, read the optimal stake per 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
Define a surebet.
A surebet (also arbitrage bet or arb) is a setup where you back every possible outcome of an event across different bookmakers and lock in a profit regardless of the result, by exploiting odds differences.
How does a surebet differ from arbitrage?
Same concept under two names. Surebet is the common term in European markets; arbitrage betting is the more technical/American term. Both back all outcomes across different bookmakers for a guaranteed profit.
What ROI do surebets deliver?
Typical surebet opportunities yield 1-5% ROI. Larger margins are rare and vanish fast. Even small percentages can pay with bigger investments and high volume.
Can bookmakers ban me for surebetting?
Surebetting is legal, but bookmakers may limit or close accounts they suspect of it. Running multiple accounts, varying stake sizes, and blending surebet activity with regular bets can lower detection risk.