+155 in decimal odds
Decimal 2.55 is +155 in American odds and 31/20 fractional. That is an implied probability of 39.2% — the win rate this price needs before it starts making money.
What this price pays
A €10 bet at 2.55 returns €25.50 in total — your €10 stake back plus €15.50 profit. In American terms, +155 means you win €155 on a €100 stake.
The win rate it demands
At 2.55 you need to win 39.2% of the time simply to break even. Below that you lose money however good the selections feel; above it you profit. This threshold is the single most useful number on the page — it is the bar your judgement has to clear.
odds_p_breakeven2
Every format at a glance
| Format | Value | Used in |
|---|---|---|
| Decimal | 2.55 | Europe, Australia, Canada |
| American | +155 | United States |
| Fractional | 31/20 | UK and Irish racing |
| Hong Kong | 1.55 | Asian handicap markets |
| Indonesian | 1.55 | Asian books |
| Malay | -0.65 | Asian books |
Frequently asked questions
What is 2.55 in American odds?
Decimal 2.55 converts to +155 in American (moneyline) odds, and to 31/20 in fractional odds.
What probability does 2.55 imply?
A price of 2.55 implies a 39.2% chance. That figure still contains the bookmaker's margin, so the fair probability of the outcome is a little lower.
How often do I need to win at 2.55 to break even?
You need to win 39.2% of your bets at 2.55 just to break even. Anything below that loses money over time, regardless of how the individual bets feel.
Convert any other price
This page covers one price. For anything else — including bulk conversion and margin analysis across a full market — use the tools directly.