3/1 odds in decimal and American
Decimal 4.00 is +300 in American odds and 3/1 fractional. That is an implied probability of 25.0% — the win rate this price needs before it starts making money.
What this price pays
A €10 bet at 4.00 returns €40.00 in total — your €10 stake back plus €30.00 profit. In American terms, +300 means you win €300 on a €100 stake.
The win rate it demands
At 4.00 you need to win 25.0% 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.
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Every format at a glance
| Format | Value | Used in |
|---|---|---|
| Decimal | 4.00 | Europe, Australia, Canada |
| American | +300 | United States |
| Fractional | 3/1 | UK and Irish racing |
| Hong Kong | 3.00 | Asian handicap markets |
| Indonesian | 3.00 | Asian books |
| Malay | -0.33 | Asian books |
Nearby prices
How the conversion moves as the price shifts — useful when you are comparing two books a few ticks apart.
Frequently asked questions
What is 4.00 in American odds?
Decimal 4.00 converts to +300 in American (moneyline) odds, and to 3/1 in fractional odds.
What probability does 4.00 imply?
A price of 4.00 implies a 25.0% 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 4.00 to break even?
You need to win 25.0% of your bets at 4.00 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.