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Odds Converter

Enter your odds in the prefered format and we will calculate how these are displayed in the other formats.

Decimal Odds  
Fractional Odds
US Odds  
Implied Probability  

 

Inputs/Outputs

  • US Odds: Odds in US format (a negative number expresses the dollar amount that would need to be wagered in order to win $100, while a positive number expresses the dollar amount that would be won from a $100 wager)
  • Decimal Odds: Odds in decimal format (expresses the amount that would be returned from a $1 bet *inclusive* of original stake)
  • Fractional Odds: Odds in fractional format (expresses the fraction of a dollar that would be wion from a $1 bet)
  • Implied Probability: The win probability that would imply zero vig on the offered line

There are three major formats in which sportsbooks quote odds: "US"-style (aka "moneyline"); "decimal"-style (aka "European" or "continental"); and "fractional"-style (aka "British" or "traditional").

US-style odds (most common, not surprisingly, in the United States) are quoted as either or a positive number. When quoted as a negative number the odds figure represents the dollar amount (or euro or sterling or whatever) a bettor would need to risk in order to win $100. Hence, US odds of -200 imply a bettor would need to risk $200 in order to win $100 (so he would receive the $200 initial stake plus $100 in winnings). When quoted as a positive number the odds figure represents the dollar amount a play would win were he to risk $100. Hence, US odds of +200 imply a bettor would need to risk $100 in order to win $200 100 (so he would receive the $100 initial stake plus $200 in winnings). Using US-style odds, an even odds bet would be quoted as +100.

Decimal-style odds (most common outside the US, UK, and Ireland) are quoted as a positive number greater than 1 (typically displayed to 2 or more decimal places). It represents the number of dollars returned that would be returned if the bet wins including the initial stake. Hence, decimal odds of 1.5000 imply that if a $1 bet won $1.50 would be returned to the bettor (the $1 initial stake plus $0.50 in wings), while decimal odds of 3.0000 imply that if a $1 bet won $3 would be returned to the bettor (the $1 initial stake plus $2 in winnings). Decimal odds of 1.5000 and 3.0000 are the equivalents of US odds of -200 and +200, respectively. Using decimal-style odds, an even odds bet would be quoted as 2.0000.

Fractional-style (most common in the UK and Ireland) are quoted as a fraction indicating the amount that would be paid out relative to a given stake. Hence, fractional odds of 1/2 (read aloud as "one-to-two" or "two-to-one on") imply that the bet would pay out $1 for every $2 risked, while fractional odds of 2/1 (read aloud as "two-to-one" or "two-to-one against") imply that the bet would pay out $2 for every $1 risked. Fractional odds of 1/2 and 2/1 are the equivalents of US odds of -200 and +200, respectively. Using fractional-style odds, an even odds bet would be quoted as 1/1.

(In all odds formats even odds bets may be quoted as "Even", "Evens" or 'Ev.".)

Associated with any given odds quotation is the win probability implied by those odds. This represents the probability with which the underlying event would need to occur to justify those odds. If the real probability were greater than the implied probability then the bet would be a good bet, while if it were lower it would be a bad bet. If the real probability were equal to the implied probability then the bet would be break-even.

This odds conversion tools converts between US, decimal, and fraction odds, and implied probability. Enter any one of the four and the other three displayed.