Meaning
Odds formats
Odds show what a winning bet returns for each unit staked. Fractional odds such as 5/1 show profit per 1 staked. Decimal odds such as 6.00 show the full return per 1, stake included. Evens is 1/1, or 2.00. To convert, add 1 to the fraction. This site writes fractional odds first and decimal in brackets.
Editorial team · checked
The conversions
- Decimal = 1 + (top number ÷ bottom number).
- Fractional = decimal − 1, written as a fraction.
- Implied chance = 1 ÷ decimal.
- Return = stake × decimal.
Back from decimal: 3.75 − 1 = 2.75, which is 11/4.
In short: One formula links the formats: decimal is the fraction plus 1.
Six pairs side by side
| Fractional | Decimal | Implied chance | Return on €10 (stake included) |
|---|---|---|---|
| 1/2 | 1.50 | 66.7% | €15.00 |
| 10/11 | 1.91 | 52.4% | €19.09 |
| 1/1 (evens) | 2.00 | 50.0% | €20.00 |
| 2/1 | 3.00 | 33.3% | €30.00 |
| 11/4 | 3.75 | 26.7% | €37.50 |
| 5/1 | 6.00 | 16.7% | €60.00 |
The percentage is a conversion of one price. It is not a forecast. The 10/11 return is €10 × 1.909 = €19.09.
In short: Fractional profit plus the stake gives the decimal return.
Switching format in the app
An app may let you choose how odds are shown; we have not verified this for any operator. Where each app puts the setting: Not checked. The dated entries will come from the operators' own help pages.
The acca calculator accepts both formats: enter odds like 5/1 or 6.00.
In short: The setting is per app and still to be recorded.
How we checked
Checked on 7 November 2026: each formula and each row of the table, recalculated by hand.
Not checked: the odds-format setting in any operator's app. We did not place bets or open accounts. Terms follow the glossary of the country brief.
In short: Only the dated items above were checked; everything marked Not checked is still open.
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