Bet calculator at Oddschecker helps you work out odds and winnings for multiple bets. Combine the bets to calculate the acca and permutation betting totals. Using our odds calculator is simple: Enter your odds in American, Decimal, Fractional or Implied, followed by your budgeted bet amount, and our calculator will. As well as calculating the return on your winning bets, the bet calculator can be used before you place your bet, to quickly New visitors may also find the extensive Betting Glossary and detailed Help pages useful. Status, Win Odds, Place.