Convert between decimal, fractional, American and implied probability. Type in any field — the other three update live.
Decimal odds (used across Europe) are the simplest: multiply your stake to get the total return. Fractional odds (UK tradition) show profit-to-stake as a ratio — so 5/2 means £5 profit on £2 staked. American odds use a +/− line: positive numbers are profit on a $100 stake, negative numbers are the stake needed to win $100.
Implied probability strips out the format and tells you the break-even win rate at that price. Compare it against your own probability estimate to find value bets. Read more in our betting glossary.