Article
American to Decimal Odds Converter & Implied Probability Guide
Master odds conversions between American (+150, -110), Decimal (2.50), and Fractional formats while calculating true implied probabilities.
By DCODDS Team•5 min read
Table of Contents
1. Understanding Sportsbook Odds Formats
Decimal Odds (2.50), American Odds (+150 / -110), and Fractional Odds (3/2).
2. Mathematical Conversion Formulas
Positive American (+A): Decimal = (A / 100) + 1. Negative American (-A): Decimal = (100 / |A|) + 1.
3. Calculating Implied Probability
Implied Probability % = (1 / Decimal_Odds) * 100.
4. Frequently Asked Questions (FAQ)
Is DCODDS Odds Converter free?
Yes! The DCODDS Basic Odds Converter is 100% free forever.