American odds (also called "moneyline" odds) and decimal odds describe the same payout differently. American odds use a positive or negative integer relative to a $100 stake. Decimal odds give you the total return per unit, including your stake. Converting between the two is straightforward once you know the formula.
Quick example: +150 (American) = 2.50 (decimal). Use the calculator below for any value, or scroll for the full conversion table.
Two formulas, depending on the sign of the American odds:
Decimal = (American / 100) + 1Decimal = (100 / |American|) + 1Common odds across all three formats. Use this as a quick reference; the calculator above handles any value to four decimal places of precision.
| Decimal | American | Fractional |
|---|---|---|
| 1.10 | -1000 | 1/10 |
| 1.25 | -400 | 1/4 |
| 1.40 | -250 | 2/5 |
| 1.50 | -200 | 1/2 |
| 1.67 | -150 | 4/6 |
| 1.75 | -133 | 3/4 |
| 1.83 | -120 | 5/6 |
| 1.91 | -110 | 10/11 |
| 2.00 | +100 | 1/1 (Evens) |
| 2.10 | +110 | 11/10 |
| 2.25 | +125 | 5/4 |
| 2.50 | +150 | 6/4 |
| 3.00 | +200 | 2/1 |
| 3.50 | +250 | 5/2 |
| 4.00 | +300 | 3/1 |
| 5.00 | +400 | 4/1 |
| 6.00 | +500 | 5/1 |
| 11.00 | +1000 | 10/1 |
| 21.00 | +2000 | 20/1 |
| 51.00 | +5000 | 50/1 |
| 101.00 | +10000 | 100/1 |
American odds are the standard at every U.S. sportsbook and the language of U.S. sports talk shows, podcasts, and Twitter/X betting accounts. Most bet slip displays default to this format in the United States.
Decimal odds dominate Europe, Australia, Canada, and Asia. Most online sportsbooks offer a setting to switch displays to decimal, and decimal is the standard format on betting exchanges and in arbitrage/value-bet calculations.
+100 = decimal 2.00 (even money / 50% implied probability). A $100 bet returns $200 total — your stake plus $100 profit.
−110 ≈ decimal 1.909 (1.91 rounded). The standard "juice" line at U.S. books — implied probability is about 52.4%.
Decimal odds are total-return-per-unit. Multiply by your stake to get total payout (including stake back). It removes the mental step of separately adding your stake to your profit.
No — between −100 and +100 there is exactly one value: ±100 (decimal 2.00, even money). American books typically display "EVEN" or "+100" instead of any number with absolute value under 100.