Odds Conversion Formulas – BetSmart.co
Odds Conversion Formulas
Convert odds between American, Decimal, and Fractional format using simple odds conversion formulas. Or, skip the math and use the chances converter rather!
Decimal to Fractional
Decimal to American
Fractional to American
Fractional to Decimal
American to Decimal
American to Fractional
Odds Converter
Decimal to Fractional
Remove 1 in the decimal and convert to a fraction, then reduce to simplest form:
(decimal-1) -> convert to percent Examples:
1.75: 1.75 — 1 = .75 = 75/100 = 3/4
2.20: 2.20 — 1 = 1.20 = 120/100 = 6/5
Decimal to American
To convert a decimal of 2.00 or higher:
moneyline = (decimal — 1) *100
Examples:
2.00: (2.00 — 1)*100 = 1*100 = +100
3.35: (3.35 — 1)*100 = 2.35*100 = +235
To convert a decimal of less than 2.00:
moneyline = (-100) / (decimal -1)
Cases:
1.9091 : (-100)/(1.9091 — 1) = (-100)/(0.9091) = -109.99 = -110
1.6579 : (-100)/(1.6579 — 1) = (-100)/(0.6579) = -151.98 = -152
Fractional to American
Over 1/1: Convert Fraction to Decimal and multiply by 100.
Moneyline = (fraction value)*100
Examples:
7/4: (7/4) * 100 = (1.40) * 100 = +140
6/5: (6/5) * 100 = (1.20) * 100 = +120
Under 1/1: split -100 from the Fraction as a Decimal.
Moneyline = -100/(fraction value)