Odds Converter
FREEConvert between decimal, fractional and American odds — and see the implied probability behind any price.
Implied probability is the odds-only break-even chance, before any bookmaker margin.
Decimal, fractional and American odds
The same price can be written three ways. Decimal (2.50) is standard across Europe and shows your total return per unit staked. Fractional (3/2) is traditional in the UK and shows profit relative to stake. American (+150 / -200) is used in the US, where positive numbers show profit on a 100 stake and negative numbers show the stake needed to win 100.
What implied probability means
Implied probability turns a price into a percentage chance — the break-even win rate you would need for that bet to be profitable long-term. It is calculated from the odds alone and includes the bookmaker margin, so the real chance is usually a little lower than the number shown.