Betting Odds Format Converter
Betting Odds Format Converter
Betting odds are displayed differently depending on where you are in the world — decimal odds are standard in Europe and Australia, fractional odds are the tradition in the UK, and American odds use a plus-or-minus format unique to US sportsbooks. Choose the format you have and enter the value, and this calculator converts it instantly into all three formats side by side. It's a useful reference for comparing odds across international sportsbooks or simply understanding what a given number actually means.
- Decimal odds (common in Europe and Australia) show your total return per unit staked, including your original stake — so decimal 2.50 means a €1 bet returns €2.50 total.
- Fractional odds (common in the UK) show profit relative to stake, so 3/2 means you profit 3 for every 2 staked, on top of getting your stake back.
- American odds (common in the US) use a plus or minus sign: positive numbers show profit on a 100-unit stake (+150 means bet 100 to win 150), while negative numbers show how much you need to stake to win 100 (−200 means bet 200 to win 100).
How do I convert decimal odds to American odds?
If the decimal odds are 2.00 or higher, American odds = (decimal − 1) × 100. If they're below 2.00, American odds = −100 ÷ (decimal − 1).
What is decimal odds of 2.50 in American format?
+150 — since (2.50 − 1) × 100 = 150.
Betting Odds Format Converter
Betting odds are displayed differently depending on where you are in the world — decimal odds are standard in Europe and Australia, fractional odds are the tradition in the UK, and American odds use a plus-or-minus format unique to US sportsbooks. Choose the format you have and enter the value, and this calculator converts it instantly into all three formats side by side. It's a useful reference for comparing odds across international sportsbooks or simply understanding what a given number actually means.
- Decimal odds (common in Europe and Australia) show your total return per unit staked, including your original stake — so decimal 2.50 means a €1 bet returns €2.50 total.
- Fractional odds (common in the UK) show profit relative to stake, so 3/2 means you profit 3 for every 2 staked, on top of getting your stake back.
- American odds (common in the US) use a plus or minus sign: positive numbers show profit on a 100-unit stake (+150 means bet 100 to win 150), while negative numbers show how much you need to stake to win 100 (−200 means bet 200 to win 100).
How do I convert decimal odds to American odds?
If the decimal odds are 2.00 or higher, American odds = (decimal − 1) × 100. If they're below 2.00, American odds = −100 ÷ (decimal − 1).
What is decimal odds of 2.50 in American format?
+150 — since (2.50 − 1) × 100 = 150.