Convert any price between fractional, decimal and American in one place, and see the implied probability it assumes. Type a price in any format and the rest update instantly.
Fractional, decimal and American odds are just three ways of writing the same price. Type any of them into the converter above and it reads the format automatically, shows the other two, and works out the implied probability.
The total returned per £1 staked, stake included — 3.50 means £3.50 back for every £1, so £2.50 profit. Easiest for comparing prices and working out returns, which is why exchanges and most of Europe use it.
Profit relative to stake — 5/2 means £5 profit for every £2 staked. Traditional in UK and Irish horse racing. "Evens" (EVS) is 1/1, i.e. 2.00 decimal.
A positive price (+250) is the profit on a 100 stake; a negative price (−200) is the stake needed to win 100. Standard across US sportsbooks.
Divide 100 by the decimal odds to get the win chance the price assumes: 100 ÷ 3.50 = 28.6%. That's your break-even strike rate — beat it consistently and you're a long-term winner.
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