Betting Odds Converter

American odds of -110 on both sides of a bet (a standard point-spread market) is how sportsbooks build in their margin. -110 alone implies roughly 52.4% -- if a bettor could get both sides of a truly 50/50 event at those odds, betting equal amounts on both outcomes would lose money to the vig regardless of the result, which is exactly how the sportsbook profits.

American odds separate favorites and underdogs into negative and positive numbers (-110 vs +150), showing profit relative to a $100 or the stake needed to win $100. Decimal odds instead show a single multiplier applied to the stake that already includes the stake back -- decimal odds of 2.50 mean a winning $100 bet returns $250 total ($150 profit plus the original $100). Both describe the same underlying price in different notations.

No -- Stake only scales Potential Payout and Potential Profit, both of which move linearly and proportionally with it. Implied Probability, American Odds, and Decimal Odds are all derived purely from the Odds Value entered and do not change based on how much is wagered.

Potential Payout is the total amount returned if the bet wins, including the original stake. Potential Profit is that same figure minus the stake -- the actual gain above what was risked. At decimal odds of 2.50 on a $100 stake, the payout is $250 but the profit is $150, since the first $100 is simply the bettor's own money coming back.