Convert odds formats
Results use the values entered and show the formula's arithmetic for this example.
Explore WinsharkHow the conversion works
Decimal odds convert to fractional by subtracting one and reducing the resulting ratio. American odds use positive values for profit on a 100 stake and negative values for the stake needed to make 100 profit.
Conversions are mathematical equivalents. They do not adjust for market margin or say whether a price is value.
Use the calculator
Choose the format shown on the market, enter a valid positive price and review the equivalent values. Fractional odds need a positive numerator and denominator; American odds cannot be zero.
The tool rounds display values for readability. Use the original price shown in the bet slip when placing a selection.
Continue learning
The decimal and fractional guides explain how each format expresses return. The implied-probability tool shows the reciprocal of decimal odds.
For a stake-based calculation, use the bet-return calculator.
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