How to use the odds converter
Start from whichever format you have and type it in its box — the other three update as you type:
- Decimal:
2.50,1.83 - American:
+150,−200 - Fractional:
6/4,3/1orevens - Implied chance:
40%(the % sign is optional)
Add your stake to see your profit and the total return (stake included). Going from implied chance to odds works too: type your own estimate of a team's chances to see the price it's worth.
Example
A Valorant match lists the underdog at +150. With a $10 stake:
| Format | Value |
|---|---|
| Decimal | 2.50 |
| Fractional | 3/2 (often written 6/4) |
| Implied chance | 40.0% |
| Profit if it wins | $15.00 |
| Total return | $25.00 |
Common esports prices in every format
| Decimal | American | Fractional | Implied chance |
|---|---|---|---|
| 1.25 | −400 | 1/4 | 80.0% |
| 1.50 | −200 | 1/2 | 66.7% |
| 1.91 | −110 | 10/11 | 52.4% |
| 2.00 | +100 | 1/1 (evens) | 50.0% |
| 2.50 | +150 | 3/2 | 40.0% |
| 3.00 | +200 | 2/1 | 33.3% |
| 5.00 | +400 | 4/1 | 20.0% |
The formulas
- American → decimal: +X → 1 + X ÷ 100; −X → 1 + 100 ÷ X
- Fractional → decimal: a/b → 1 + a ÷ b
- Decimal → implied chance: 1 ÷ decimal
- Profit: stake × (decimal − 1)
The implied chance is not the "true" chance: it includes the bookmaker's cut. Add both teams' implied chances and you'll get more than 100% — the extra is the margin. Strip it out with the margin calculator, then compare with your own read in the expected value calculator.
Prices from different esports, converted
Lines look different from game to game, but the conversion is the same. A few typical prices:
| Market | Price shown | Decimal | Implied chance |
|---|---|---|---|
| CS2 Bo3, strong favourite | −250 | 1.40 | 71.4% |
| League of Legends Bo1, underdog | +180 | 2.80 | 35.7% |
| Dota 2 Bo2, the 1–1 draw | 4.50 | 4.50 | 22.2% |
| Valorant map winner | 1.72 | 1.72 | 58.1% |
| Mobile Legends match winner | 2.20 | 2.20 | 45.5% |
Two habits help. First, always check what the price is for: a Bo1 favourite is a weaker favourite than the same team in a Bo3, because one map is more random than a series. Second, remember that the Bo2 draw is a real outcome in some Dota 2 group stages, so a price on it is not a typo.
New to reading esports lines? Start with esports betting for beginners.
