Free sports arbitrage calculator
Size both legs of a hedge in American odds — for straight arbs, bonus bets, profit boosts, insured bets, and bet-and-get promos. No signup needed.
One or both sportsbooks are offering boosted odds. Set the boost % per side — the hedge stake auto-calculates.
Enter odds and a stake to calculate
How each mode works
- Raw arbitrage
- Two books disagree on the same game. Enter both American odds and a stake on one side; the calculator sizes the other side so either result returns the same amount, and shows the locked-in profit (or the loss, if the prices don't actually arb).
- Boosted odds
- A book is boosting a line by a percentage. Set the boost on that side and the calculator applies it to the payout before sizing the hedge, so you see what the boost is really worth once both sides are covered.
- Bonus bet
- A bonus bet returns only the profit on a win — the stake itself is never paid back. Mark that side as a bonus and the hedge is sized for a stake-not-returned payout, which is how a bonus becomes withdrawable cash.
- Insured bet
- The book refunds a losing stake as a bonus bet. Set the insurance percentage and the calculator values that refund when sizing the hedge, so the guaranteed value includes the refund you would convert later.
- Bet & get
- Placing a qualifying wager earns a bonus bet win or lose. Hedge the qualifying bet to keep its cost small; the bonus's estimated cash value is added on top.
- Odds surge
- A promo adds a fixed number of points to an American line. Set the surge per side and the hedge is sized against the surged price.
Frequently asked questions
What does an arbitrage calculator do?
It takes the odds on both sides of the same market at two different sportsbooks and works out how much to stake on each so that whichever side wins, you get the same return. If the odds leave room, that return is more than the total you staked.
How do you convert a bonus bet into cash?
Place the bonus bet on one side at good plus odds, then hedge the other side with real money at a different book. With a $100 bonus bet at +200 and a hedge at −175, a $127.27 hedge locks in about $72.73 whichever team wins — roughly a 73% conversion rate.
Do I need an account to use the calculator?
No. Every mode works without signing up. A free CherryHouse account adds bet logging, so each hedge you size lands in your bet ledger with cash and bonus balances tracked per book.
What odds format does it use?
American odds, such as +150 or −120. If your book shows decimal odds, most let you switch the display to American in settings.
Tired of hunting for the second leg? CherryHouse reads the odds off your open sportsbook tabs and finds the hedge for you.