To convert from a probability to odds, divide the probability by one minus that probability. So if the probability is 10% or 0.10 , then the odds are 0.1/0.9 or '1 to 9' or 0.111.

Calculating Winnings\n\n Odds of 7/5 mean you'll winR$7 for everyR$5 you wager on the A's. Conversely, the Rangers' odds of 5/8 mean you need to wagerR$8 to winR$5 on Texas. Another way to look at it: If the first number is larger than the second, you're betting on the underdog for a higher potential payout.