How to Convert Decimal to American Odds
Decimal odds represent the total payout rather than just the profit. To convert decimal odds of 2.00 or higher to American, subtract 1 and multiply by 100. For odds less than 2.00, the formula is -100 / (decimal - 1).
Practical Example:
Decimal odds of 2.50 convert to American odds of +150.
Why Professional Bettors Prefer Decimal Odds
While American odds (e.g., +150, -110) are the standard in the United States, professional bettors worldwide largely prefer Decimal Odds (e.g., 2.50, 1.91).
The reasons are simple:
1. Ease of Calculation: To find your return, simply multiply your stake by the decimal odd. $100 * 2.50 = $250 Total Return.
2. Parlay Math: Calculating parlay odds in American format requires complex conversion. In Decimal format, you simply multiply the odds of each leg together. 1.91 * 1.91 = 3.64.
3. Global Standard: Most betting exchanges (like Betfair) and sharp Asian bookmakers operate exclusively in decimals.
Manual Conversion Formulas
If you need to convert odds without a calculator, here are the formulas:
Decimal to Positive American (Decimal ≥ 2.00):
(Decimal - 1) * 100 = American
*Example:* 2.50 becomes (2.50 - 1) * 100 = +150
Decimal to Negative American (Decimal < 2.00):
-100 / (Decimal - 1) = American
*Example:* 1.50 becomes -100 / (1.50 - 1) = -200
Frequently Asked Questions
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