Surebet Tool
Guaranteed profit from surebets — enter prices from different bookmakers.
How to Use This Calculator
- Type in your total investment amount
- Type in 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 the market type
- If a surebet exists, read off 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
What is a surebet?
A surebet (also called an arbitrage bet or arb) is when you back every possible outcome of an event across different bookmakers and lock in a profit no matter the result, by exploiting odds differences.
How does a surebet differ from arbitrage?
Same concept. Surebet is the everyday term in European markets; arbitrage betting is the more technical/American label. Both mean backing all outcomes across different bookmakers for a guaranteed profit.
What ROI do surebets deliver?
Most surebet chances run 1-5% ROI. Bigger margins are rare and vanish fast. Even small percentages add up with larger stakes and high volume.
Can bookmakers ban me for surebetting?
Surebetting is legal, but bookmakers may limit or shut accounts they suspect of it. Spreading across multiple accounts, varying your stake sizes, and mixing arbs with regular bets can lower the odds of getting flagged.