No-Vig Fair Odds Calculator
Quick Facts
- Removes vig to show fair probabilities and prices.
- Inputs: market odds (any format).
- Outputs: no-vig probabilities and fair odds.
How to use
Steps
Add all market odds. The tool rescales probabilities to 100% to show no-vig results and fair prices.
Formula & definitions
Formula: FairProbᵢ = (ImpliedProbᵢ / Σ ImpliedProb); FairOddsᵢ = 1 / FairProbᵢ
- Fair Odds
- Price with margin removed.
- Implied Probability
- 1 / decimal odds.
No-Vig / Fair Odds Calculator
| Odds | Implied Prob (w/Vig) | No-Vig Fair Odds | Implied Prob (No-Vig) | |
|---|---|---|---|---|
0.00% | — | 0.00% | ||
0.00% | — | 0.00% |
What Are No-Vig (Fair) Odds?
Fair odds—also called No-Vig Odds—remove the sportsbook's margin (vig) from market odds. The result? You see the true probability for each outcome, so you can spot real value and +EV bets.
How Do Fair Odds Work?
Every sportsbook includes a margin (vig) to guarantee a profit. This margin inflates the sum of implied probabilities above 100%.
Our calculator rescales those probabilities back to 100%, so you get the true odds for each outcome if there were no margin at all!
- Input sportsbook odds in any format
- See both implied probability (with vig) and no-vig probability
- Compare fair odds to actual odds to find value bets
Why Use the OddsX No-Vig Odds Calculator?
- Enter odds for each outcome (Decimal, American, or Fractional).
- Compare bookmaker's probabilities vs. fair probabilities instantly.
- Use the “No-Vig” odds to calculate real +EV opportunities and compare value.
- Sharpen your betting strategy and always know the true value.
Updated 11 May 2026 SAST
Why it matters
Use the No-Vig Fair Odds Calculator to sanity-check prices, remove guesswork, and make faster decisions when odds move.
Example
Example: Odds 1.80 vs 2.10. The tool removes vig and returns fair odds for each side.
Who it's for
Useful for sports fans who want fair prices before betting on South African sportsbooks.
Use cases
- Remove margin from sports betting sites to reveal fair odds.
- Compare fair prices across online sports betting markets.
Practical tips
- Verify the odds are still live before relying on the output.
- Treat the results as guidance, not a guarantee.
- Compare multiple sportsbooks to validate value.
FAQs
What does no-vig mean?
Odds/probabilities with the margin removed.
Do I need all outcomes?
Yes—to rescale accurately, include the whole market.
Which formats are supported?
Decimal, American, and Fractional.
Is this good for sports betting sites?
Yes—use it to compare the true price across books.