Surebet Calculator
Compute guaranteed returns from a surebet using prices at different books.
How to Use This Calculator
- Input your total investment amount
- Input the best odds for each outcome sourced from different bookmakers
- For 3-way markets (e.g., soccer), populate all 3 default outcome fields
- Add or remove outcomes to match the market type
- If a surebet is present, 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 a scenario in which you back every possible outcome of an event across different bookmakers and lock in a profit regardless of the result, by exploiting discrepancies in the odds.
How does a surebet differ from arbitrage?
They denote the same concept. Surebet is the more common term in European markets, whereas arbitrage betting is the more technical/American label. Both entail backing all outcomes across different bookmakers for a guaranteed profit.
What ROI should I expect from surebets?
Typical surebet opportunities deliver 1-5% ROI. Larger margins are rare and evaporate quickly. Even modest percentages can be profitable given larger investments and high volume.
Can bookmakers ban me for surebetting?
Although surebetting is legal, bookmakers may limit or close the accounts of suspected surebet bettors. Using multiple accounts, varying stake sizes, and blending surebet activity with regular bets can help lower detection risk.