No Vig Calculator

Strip bookmaker margin from American or decimal odds — proportional and additive no-vig methods with multi-outcome support.

How It Works

  1. Enter two-way odds. Type American odds for Side A and Side B (e.g. −110 / −110).
  2. See no-vig probabilities. The calculator removes the bookmaker overround to show fair win chances.
  3. Multi-outcome table. Switch to 2-way or 3-way markets with American or decimal odds.
  4. Choose a method. Proportional (most common) or additive vig removal — compare implied vs fair odds.
  5. Vig summary & decimal. View total margin removed and convert decimal odds to no-vig fair lines.

Also try our Percentage Calculator or Finance Calculators.

Enter values to see results.

Formula & Reference

No-vig prob = implied prob ÷ sum of implied probs