Free arbitrage calculator also known as surebet calculator for 2 way, 3 way, and multi outcome markets. Enter decimal odds, set your stake, and get ROI plus stake splits instantly.
Arbitrage betting (surebetting or arbing) means covering every outcome at odds that guarantee profit. When bookmakers disagree on prices, the combined implied probability can fall below 100% — that gap is your margin.
This free arb calculator splits your bankroll so each leg returns the same payout. For live opportunities, use Sportalon's surebets finder.
Two bookmakers price a basketball moneyline differently:
| Book | Selection | Odds | Stake | Return |
|---|---|---|---|---|
| Book A | Team 1 | 2.15 | ₦4,880 | ₦10,492 |
| Book B | Team 2 | 2.05 | ₦5,120 | ₦10,496 |
| Total: ₦10,000 | Profit: ~4.9% ROI | |||
Once you know the maths, the hard part is spotting mispriced odds before they move. There are two main ways to do it:
Use this page to verify any arb you find manually. When you want them delivered in real time, switch to Sportalon's live surebets finder.
Most arbitrage software is built for European and US bookmakers. Sportalon is built for African markets — the books you actually bet with every day.
The live scanner refreshes prematch and virtual football surebets across 20+ operators. Every row shows profit %, every leg, kickoff time, and a stake calculator so you can place all sides before the window closes.
Booking codes on supported sites mean you load the selection straight on the bookmaker — no copying event IDs by hand.
Open the surebets finder →