Moneyline Odds.
(Also known as American)
Used by many US bookmakers.
Based on a bet that was single with no points spread.
In case the moneyline is favorable, the amount quoted is the amount that would win on a $100 bet.
In case the moneyline is negative, the amount quoted is exactly what you would need to risk to win $100.
Fractional Odds. (Also known as Traditional or British)
Used chiefly by UK. bookmakers.
Based on the total amount of profit if you win.
By way of instance, if you bet $100 at odds of 3/1, you receive $300 profit if you win, plus your stake of $100 back.
Decimal Odds. (Also known as European)
Used by most European bookmakers.
Shows the total amount you will receive if you win, including the yield of your stake.
By way of example, if you bet $100 at odds of 3.75, you’ll get $375 in complete if you win.