Odds & Probability Converter

Convert between American, decimal, and fractional odds and see the implied probability and break-even win rate for any price.

Enter any odds format and instantly see what they mean across every standard.

Formats

American, decimal, fractional

Outputs

All formats plus implied probability

Use case

Learn what you must win long-term to break even

This tool is for education and entertainment only. It does not place bets or guarantee outcomes.

Implied Prob.
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Break-even %
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Vig vs. 50/50
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How to use this tool

Whether you're comparing lines across sportsbooks or trying to understand what your odds actually mean, this converter does the math for you.

  1. 1

    Choose the odds format

    Select whether you're entering American, decimal, or fractional odds.

  2. 2

    Enter the odds value

    Type the odds exactly as they appear on your sportsbook.

  3. 3

    Review the converted formats

    The converter instantly displays the equivalent in all three formats.

  4. 4

    Understand implied probability

    The tool shows implied probability and break-even win rate.