No-vig (fair odds) calculator
Remove bookmaker margin to find true probabilities
Remove bookmaker margin to reveal the 'true' probabilities and fair odds.
What are no-vig odds?
Bookmaker odds always include a margin (vig, juice, or overround). If two outcomes in a market sum to 105% probability instead of 100%, that extra 5% is the bookmaker's guaranteed profit. No-vig calculation removes that margin proportionally and reveals what the bookmaker actually thinks each outcome's probability is.
Sharp bettors use Pinnacle's no-vig odds as the market consensus β Pinnacle has the lowest margins so their lines best reflect true probabilities. When a soft bookmaker offers odds longer than Pinnacle's no-vig price, that's a +EV bet. Confirm the edge with our Value Bet calculator, then size it with Kelly criterion. Use Margin calculator to identify which bookmakers are sharp vs soft.
See also: Bookmaker margin calculator, Value bet finder, Closing Line Value
How to use this calculator
- 1Enter the decimal odds for each outcome in a market.
- 2The calculator strips the margin proportionally and shows fair odds for each outcome.
- 3Compare these fair odds to what other bookmakers offer.
Example: finding value via Pinnacle no-vig
Pinnacle offers Player A at 1.95 / Player B at 1.95 (margin: 2.6%). No-vig calculation: fair odds are 2.00 / 2.00 (50/50). Another bookmaker offers Player A at 2.05 β that's longer than Pinnacle's fair 2.00, so it's a +2.5% EV bet. The sharper the reference book, the more accurate your no-vig.
When to use
- Comparing odds at soft bookmakers against Pinnacle's no-vig line
- Calculating true probabilities for Kelly criterion staking
- Spotting arbitrage opportunities between soft and sharp books
Frequently asked questions
What is the No-vig (fair odds) calculator?
Bookmaker odds always include a margin (vig, juice, or overround). If two outcomes in a market sum to 105% probability instead of 100%, that extra 5% is the bookmaker's guaranteed profit.
How does the No-vig (fair odds) calculator work in practice?
Pinnacle offers Player A at 1.95 / Player B at 1.95 (margin: 2.6%). No-vig calculation: fair odds are 2.00 / 2.00 (50/50). Another bookmaker offers Player A at 2.05 β that's longer than Pinnacle's fair 2.00, so it's a +2.5% EV bet. The sharper the reference book, the more accurate your no-vig.
When should I use the No-vig (fair odds) calculator?
Comparing odds at soft bookmakers against Pinnacle's no-vig line. Calculating true probabilities for Kelly criterion staking. Spotting arbitrage opportunities between soft and sharp books.