American to Decimal Odds Converter
Use this American to decimal odds converter to translate any moneyline price into decimal odds and see the implied probability. American odds (moneyline) use a positive or negative number to express how much you profit on a $100 bet. Decimal odds (popular in Europe, Australia, and exchanges) show the total payout per unit staked, including the stake. Converting from American to decimal takes one formula.
The formula
Positive American (e.g. +150): Decimal = (American ÷ 100) + 1Negative American (e.g. −200): Decimal = (100 ÷ |American|) + 1Example: +150 → (150 ÷ 100) + 1 = 2.50. −200 → (100 ÷ 200) + 1 = 1.50.
Reference table
Common American values and their decimal equivalents.
| American | Decimal | Probability |
|---|---|---|
| -500 | 1.20 | 83.3% |
| -200 | 1.50 | 66.7% |
| -149 | 1.67 | 59.9% |
| +100 | 2.00 | 50.0% |
| +150 | 2.50 | 40.0% |
| +200 | 3.00 | 33.3% |
| +300 | 4.00 | 25.0% |
| +400 | 5.00 | 20.0% |
| +500 | 6.00 | 16.7% |
| +900 | 10.00 | 10.0% |
Frequently Asked Questions
Why convert American to decimal?
Decimal odds are the universal format outside the US, and they are easier to compare across books. They also make payout math trivial (stake × decimal = total return). Sharp sources, Pinnacle, and betting exchanges all default to decimal.
Why does +100 equal decimal 2.00?
+100 means winning $100 on a $100 stake at even money. Decimal 2.00 doubles your stake. Both represent a 50% implied probability.
Which sportsbooks display decimal odds?
Most non-US books default to decimal: Pinnacle, Bet365, Betfair (exchange), Smarkets, Unibet, William Hill International. US books default to American moneyline.
What about fractional or implied probability?
Use the full odds converter for all seven formats including fractional, implied probability, Indonesian, Hong Kong, and Malay.
Need a different format?
Open the full odds converter for fractional, implied probability, Indonesian, Hong Kong, and Malay.