Welcome to our free arbitrage calculator website. We've built the perfect tool to make your sports betting (and specifically your arb) experience easier! Below you'll find our simple-to-use Arbitrage Calculator, also known as an arb calculator or sure bet calculator. We also provide more information about the basics of arbitrage betting and how to secure guaranteed profits.
Arbitrage Calculator
Use Our Arbitrage Calculator
Enter your odds (decimal, American, or fractional) below to calculate split stakes for any event.
Bet 1
$0.00
Bet 2
$0.00
Enter Stake:
Your Arbitrage Results:
Payout
$0.00
Profit
$0.00
ROI
0.00%

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Guide & Info
What is Arbitrage Betting?
Arbitrage betting (sometimes called “sure bets,” “surewins,” or “miraclebets”) is a strategy where bettors wager on all possible outcomes of an event to guarantee a profit, regardless of the result. It exploits discrepancies in odds across different sportsbooks. Pair this concept with our Arbitrage Calculator to simplify the math and ensure consistent profits.
How to Use the Arbitrage Calculator
- Enter the Odds: Provide your odds in decimal, American (+/-), or fractional format for each outcome.
- Enter the Stake: Type in the total money you want to stake across these bets.
- Calculate: The calculator splits your stake automatically to give the same payout on every outcome.
Sports Arbitrage Betting Example
Suppose two sportsbooks price an NBA game differently. By placing bets at each sportsbook's most advantageous odds, you ensure a higher combined payout than your total stake—resulting in a guaranteed profit.
Arbitrage Betting Strategies
Strategy A: Guaranteed Profit
Distribute your total stake precisely so that you lock in a modest but guaranteed return no matter who wins. Our arbitrage calculator can do all the heavy lifting for you.
Strategy B: Weighted “Sure Bet” for Higher Returns
If you favor one outcome, place more money on that team. You'll secure greater profit if your pick is right, but you may only break even (or lose a small amount) if it isn't.
How to Find Arbitrage Opportunities
- Manual Comparison: Checking multiple sportsbooks or odds-comparison sites for price discrepancies.
- Software & Tools: Automated scanners that flag potential arb bets instantly.
- Sportsbook Promotions: Boosted odds and special offers can sometimes create profitable mismatches.
Risk of Arbitrage Betting
Although it's considered low-risk, arbitrage betting isn't entirely risk-free. Sportsbooks may void bets placed at erroneous odds, leaving your other wagers exposed.
Stick to realistic discrepancies of 1-5% guaranteed returns. If an offer seems too good to be true, it might be an error likely to be canceled.
Frequently Asked Questions
Is arbitrage betting legal?
Generally, yes. However, sportsbooks have varying policies and may limit or close accounts suspected of arbitrage. Always review their terms.
How much profit can I make?
Typical profits range from 1% to 5% per bet, but consistent, larger stakes can accumulate significant gains over time. Our arbitrage calculator helps you start small or scale up as desired.
Any other risks?
Timing is critical, as odds can shift quickly. Always double-check both sides of the bet are placed successfully. Also, watch out for “promo bans” if you frequently exploit promotions.