Free Odds Converter

Convert decimal, fractional, and American odds instantly. Use this free betting odds converter to compare prices and understand the implied probability behind any market.

Enter your odds
Quick examples
Converted odds
Decimal
Fractional
American
Implied Probability

How this odds converter works

Decimal odds are popular in Europe, fractional odds are common in UK and Irish betting, and American odds are widely used in the United States. This tool lets you switch between all three instantly.

What implied probability means

Implied probability shows the percentage chance suggested by the odds. For example, decimal odds of 2.00 imply a 50% chance. This is useful for comparing bookmaker prices and spotting value.

Common betting odds examples

  • 2.00 decimal = Evens = +100 American = 50.00%
  • 1.50 decimal = 1/2 fractional = -200 American = 66.67%
  • 3.50 decimal = 5/2 fractional = +250 American = 28.57%