Free Tool

Odds Converter

Switch any odds between decimal, fractional, American and implied probability, instantly. Type in one box, the rest update live.

Decimal e.g. 2.50

Fractional e.g. 3/2

American e.g. +150 / -200

Implied probability the chance the odds imply

£10 returns £25.00 (stake + profit)

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How odds formats work

Decimal (used across the UK/Europe) is the simplest: your total return per £1 staked. 2.50 means £2.50 back (£1.50 profit + £1 stake) for every £1.

Fractional (traditional UK) shows profit-to-stake. 3/2 means £3 profit for every £2 staked, the same as 2.50 decimal.

American (moneyline) uses a baseline of 100. A positive number (+150) is the profit on a £100 stake; a negative number (−200) is the stake needed to win £100.

Implied probability is the chance the odds suggest: 1 ÷ decimal odds. At 2.50 that's 40%. Compare it to your own (or our model's) estimate. If you think the true chance is higher, there's value.

Built by the team behind a publicly verified football model. Every pick logged before kick-off, 68% hit rate, losses included.