Fair odds would be 2.00 for both and if you bet 10$ on over and the same on under, you will get 20$ back, no matter what happens. In reality, the prices would probably be about 1.93 and the difference is the bookmaker’s margin. The percentage varies in each operator and depends on lots of factors.
Sports Betting Odds Calculators. Moneyline Odds Calculator. Convert the amount wagered and the odds into possible winnings. Works in reverse too. Enter the amount you want to win and the odds to see the amount you need to wager. Use American odds -110, +110, etc. Amount to Bet $. To calculate “-“ American Odds, divide 100 by the odds number (without the minus sign) and multiply that quotient by the amount wagered. For example, a $50 bet that pays -110 odds would calculate as (100/110).$50, which converts to (.909.$50) and then to $45.45.