Use Sure Bet calculator to check whether given odds create a risk free sure bet (sure win, arbitrage bet) opportunity. Simply enter the total amount you wish to bet and the odds for each outcome and the calculator will immediately calculate the stakes for all outcomes, your potential winnings & payout and the risk free return (profit or loss).
You can use the calculator for both 3-way (like win draw or loss) and 2-way (like BTTS) sure bets, and select the odds used (American, Decimal or Fractional) for the calculation.