Frequently asked questions
What are American odds?
American odds use positive and negative numbers. Positive odds show the profit on a $100 stake: +150 represents $150 profit on $100. Negative odds show the stake required to make $100 profit: −200 represents $100 profit on a $200 stake.
Which odds format gives the best price?
None. Changing the display format does not change the underlying price. For example, +150, 2.50, and 3/2 represent the same implied probability and potential payout. Compare converted values rather than formats.
What is implied probability?
Implied probability is the break-even win rate represented by an odds price before adjusting for the sportsbook margin. Decimal odds of 2.50 imply 40% because 1 ÷ 2.50 = 0.40. It is not a guarantee that the outcome has a true 40% chance.
How are parlay odds calculated?
Convert every leg to decimal odds and multiply the decimal values together. Two legs priced at 1.91 produce combined decimal odds of approximately 3.65. The calculator then converts that combined price back into American odds and implied probability.
Does potential return include the original stake?
Yes. Total potential return is the profit plus the original stake. If a $20 wager at 2.50 wins, the potential profit is $30 and the total potential return is $50.
Why might my sportsbook show a slightly different conversion?
Displayed prices are rounded. Fractional odds can also require an approximation when there is no tidy equivalent. Small display differences are normal; the sportsbook's accepted ticket determines the final price and settlement.
Does AmericanOdds take bets?
No. AmericanOdds is an educational calculator and does not accept wagers, hold funds, or guarantee outcomes. Always confirm the final price and terms with the sportsbook before placing a bet.