American Odds to Decimal Odds Converter
How to convert American odds to Decimal odds
This American odds to decimal odds converter helps you switch between two common betting odds formats in seconds. Type in your American odds and the matching decimal odds will be calculated automatically.
How American odds are converted to decimal odds
For positive American odds, divide by 100 and add 1. For negative American odds, divide 100 by the absolute value and then add 1.
For example, American odds of +150 convert to decimal odds of 2.50.
Worked example
Convert American odds of +200 to decimal odds
Since +200 is positive, use the formula (American odds / 100) + 1.
200 / 100 + 1 = 3.00.
The decimal odds are 3.00.
Important note for this conversion
This conversion is useful when one bookmaker lists a market in American odds and another shows the same market in decimal odds.
Common conversion mistake
A common mistake with American odds is forgetting that positive and negative values use different formulas. Always check the sign before converting.
American odds explained
American odds are built around a 100-unit reference point. If the number is positive, it represents profit from a 100 stake. If it is negative, it represents the stake needed to win 100. This format is especially common in betting on US sports such as the NFL, NBA, MLB, and NHL.
Decimal odds explained
Decimal odds are often called European odds and are one of the easiest formats to read. The number represents total return rather than just profit, which makes payout calculations straightforward. A decimal price of 1.80 means a 1 unit stake returns 1.80 in total.
Supported odds formats
In addition to converting American odds into decimal odds, the underlying calculator supports the main odds formats used worldwide. This includes decimal, fractional, American, Hong Kong, Malaysian, Indonesian, and probability-based pricing.
Why use an odds converter?
Using an odds converter saves time and reduces pricing errors. If one site lists a market in American odds and another shows it in decimal odds, converting both into a familiar format makes value comparisons much more reliable.
Frequently asked questions
What is the easiest way to convert American odds to decimal odds?
The easiest method is to use the standard direct conversion formula between American odds and decimal odds, or use the calculator to avoid manual mistakes.
Why do bettors convert American odds into decimal odds?
Bettors often convert American odds into decimal odds to compare bookmaker prices more easily, understand implied probability, and read markets in the format they are most comfortable with.
Can I compare bookmakers more easily after converting American odds to decimal odds?
Yes. Once both prices are in the same format, it becomes much easier to spot value differences, compare payout levels, and evaluate whether one bookmaker is offering a better line than another.
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