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InfoBets: Betting Information

Odds converter: decimal, fractional & American

Convert decimal, fractional & American odds. See implied probability, profit & total return through a clear worked example.

One price. Three ways to read it.

Convert the odds, see their implied probability & understand what an example stake would return.

1. Choose your odds format

Example: 2.50. Decimal odds must be greater than 1.

Use the same currency for the stake, profit & return.

Example result · 2.50 decimal
Decimal2.50
Fractional3/2
American+150
Implied probability40%

100 ÷ 2.50 = 40%

Total return if it wins
25.00
Profit within that return
15.00

10.00 × 2.50 = 25.00 total return, including the 10.00 stake.

Figures are rounded for display.

Implied probability comes from the price. It is not a prediction of the actual chance of winning. This example excludes tax, commission, free-bet rules & void or partial settlements.

How the conversion works

Fractional → decimal
Divide the first number by the second, then add 1. Example: 3/2 becomes 2.50.
Positive American → decimal
Divide the American number by 100, then add 1. Example: +150 becomes 2.50.
Negative American → decimal
Divide 100 by the size of the negative number, then add 1. Example: -200 becomes 1.50.

Read the plain-language guide to odds formats →

Information only. 18+.