Free tool
Arb Calculator
Check any two or three sided market for an arbitrage and get the exact stake for each leg to lock in the same profit on every outcome.
Arb profit
+1.92%
Guaranteed return
$1,019.22
Guaranteed profit
+$19.22
Stake per leg
Leg 1 (+110)
$485.34
Leg 2 (-102)
$514.66
Stakes are sized so every outcome returns the same amount no matter which leg wins.
Want to learn arbitrage betting?
Watch our step-by-step arbitrage betting playlist on YouTube.
Watch the playlistFrequently asked questions
What is an arbitrage bet?+×
An arb is a set of bets covering every outcome of a market at different books, priced so the combined implied probability is under 100%. Whatever happens, you collect more than you staked.
How does the calculator work?+×
We convert each leg's odds to an implied probability and add them up. If the total is under 100%, an arb exists, and the profit is 1 divided by that total, minus 1. Your bankroll is then split proportionally so every outcome returns the same amount.
How are the stakes allocated?+×
Each leg's stake is its share of the combined implied probability. Bigger favorites get bigger stakes, so the payout is identical no matter which side wins.
Is arbitrage betting allowed?+×
Arbing is legal, but sportsbooks do not like it. Accounts that arb frequently often get limited or restricted, so most arbers spread action across many books and keep stakes reasonable.