Free calculator
No-vig calculator
Enter the odds for every outcome of a market and the calculator strips out the bookmaker margin, giving the fair odds and true probabilities. Compare four de-vig methods side by side, or load a current Pinnacle price with one click.
| Method | Home | Draw | Away |
|---|---|---|---|
| Quoted (with margin) | 2.100 | 3.450 | 3.700 |
| Multiplicative | 2.176 | 3.575 | 3.834 |
| Power | 2.155 | 3.602 | 3.872 |
| Shin | 2.160 | 3.594 | 3.863 |
| Additive | 2.155 | 3.600 | 3.873 |
Runs entirely in your browser; nothing you type is sent anywhere. For information only: PinnRadar sells odds data, takes no bets and gives no betting advice.
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Get a free key →How the no-vig calculation works
Each decimal price implies a probability of 1 / odds. In a fair market those probabilities would add up to 100%. A bookmaker’s add up to more, and the excess is the margin. A market priced 1.952 / 1.952 implies 51.2% + 51.2% = 102.5%, so the margin is 2.5% and the fair price on each side is 2.00.
Removing the margin means scaling those implied probabilities back to 100%. The methods differ in how they share the margin between favourite and longshot:
- Multiplicative divides each implied probability by the total. Simple, and the standard for close two-way markets.
- Power raises each implied probability to the power
kthat makes them sum to 1. It takes more margin from longshots, matching how books usually price them. - Shin models the margin as protection against insiders and solves for their share. It also favours the favourite and is popular for 1X2 soccer markets.
- Additive subtracts the same amount from every outcome. It is shown for comparison and can break on big longshots.
Why sharp bettors de-vig Pinnacle
A no-vig price is only as good as the market it comes from. Pinnacle’s margin is among the lowest, and it lets winning players keep betting, so its line absorbs informed money quickly. That is why its no-vig price is the usual benchmark for closing line valueand for positive-EV betting against softer books. See today’s Pinnacle odds board for more prices to try.
Doing it in code
The multiplicative version is one line: fair = [1 / (q / sum(qs)) for q in qs] where qs are the implied probabilities. With the PinnRadar odds API you can run it on every live and prematch Pinnacle market as prices change, and the drop alerts already carry a no-vig price.
Questions people ask
What does no-vig mean?
The vig (or margin, overround, juice) is the bookmaker's cut. It shows up as implied probabilities that add up to more than 100%. No-vig odds are the prices with that cut removed, so the probabilities add up to exactly 100%. They are the bookmaker's own estimate of the fair price.
Which de-vig method should I use?
Multiplicative (proportional) is the common default and is fine for evenly matched two-way markets. Bookmakers tend to load more margin on longshots, so for markets with a clear favourite the power or Shin method usually gives a more accurate fair price. Additive takes the same amount off every outcome and can overstate favourites.
Why use Pinnacle prices for no-vig odds?
Pinnacle runs a low margin and moves its line in response to sharp money rather than limiting winning accounts. Its no-vig price, especially near the close, is widely used as the best public estimate of a market's true probability.
Can I get no-vig Pinnacle odds through an API?
Yes. The PinnRadar API streams Pinnacle's live and prematch prices over REST, WebSocket and SSE. You can de-vig them in your own code with the same formulas this page uses, and the drop alerts already include a no-vig price.
Does this calculator save what I type?
No. All the arithmetic runs in your browser and nothing is sent to a server.
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