Sports Betting Arbitrage Calculator

Arbitrage betting (also called arb betting or sure betting) is a strategy where you place bets on all possible outcomes of an event across different sportsbooks at odds that guarantee a profit regardless of the result. This occurs when sportsbooks have different opinions on odds, creating a pricing inefficiency. By betting the right amounts on each outcome, you lock in a guaranteed profit with zero risk.

Arbitrage opportunities occur when the combined implied probability of all outcomes is less than 100%. Find them by: (1) comparing odds across 5-10 sportsbooks for the same event, (2) using odds comparison tools or arbitrage betting software, (3) looking for events where sportsbooks disagree significantly on odds, (4) acting quickly as arbitrage opportunities close fast when sharp bettors exploit them. Most arbs offer 1-5% profit margins.

Yes, arbitrage betting is completely legal. You're simply placing normal bets at different sportsbooks at the best available odds. However, sportsbooks don't like arbitrage bettors because they guarantee profits rather than taking risk. If a sportsbook identifies you as an arb bettor through bet patterns, they may limit your account, reduce max bet sizes, or close your account. This is legal for them to do as well.

Arbitrage betting typically offers 1-5% profit margins per opportunity. With a $1,000 bankroll, you might find 5-10 arb opportunities per week, earning $50-200 weekly ($2,500-10,000 annually). Success depends on: available bankroll, number of sportsbook accounts, time spent finding opportunities, bet limits before accounts get restricted, and ability to move money between books quickly. Professional arbers with large bankrolls can make six figures annually.

Arbitrage betting means placing bets at the start that guarantee profit on all outcomes. Hedging means placing a bet later to reduce risk or lock in profit from an existing bet. Arbitrage requires finding odds inefficiencies across books. Hedging is used when your situation changes (your team is winning, odds shifted favorably, or you want to reduce risk). Both involve betting both sides, but arbitrage is planned from the start while hedging is reactive.

Sportsbooks can limit or close your account if they identify you as an arbitrage bettor, though outright bans are rare. They may: reduce your maximum bet limits, exclude you from promotions, slow down bet acceptance, or close your account and return your balance. To avoid detection: don't exclusively bet arbitrage opportunities, place some normal recreational bets, vary bet sizes, don't withdraw immediately after every arb, and spread action across many sportsbooks.

Arbitrage betting risks include: (1) odds changing between placing bets (you place bet 1, odds move before bet 2), (2) bet limits preventing you from placing calculated amounts, (3) bets being voided or graded incorrectly, (4) account restrictions or closures, (5) human error in calculations or bet entry, (6) palpable errors where sportsbooks void obviously wrong odds, (7) funds getting tied up across multiple accounts. Always double-check calculations and act quickly.

No, arbitrage betting works with regular cash when you find natural odds discrepancies across sportsbooks. However, using sportsbook bonuses, free bets, and promotions creates additional arbitrage opportunities or increases profit margins. For free bets or bonus bets that don't return stake, use the free bet calculator instead. For bonus cash or site credit that returns stake on wins, this arbitrage calculator is appropriate.