No-Vig Calculator
Strip the sportsbook juice and see the fair price for any 2-way or 3-way market. Compare any line against true value in seconds.
The fair price is what the market would offer with zero margin. Compare any book against this number; if the book is offering longer odds, you have a positive expected-value bet.
A calculator with sharp eyes
The math is the easy part. The hard part is knowing whether the line you typed in is the line the sharps see.
Sharp consensus baseline
ThunderBet builds a continuously updated fair-line consensus from Pinnacle, Circa, and BetCRIS. The dashboard version of this calculator overlays your no-vig output against that consensus so you can spot when one book is the outlier.
Live no-vig feed
Stop hand-typing odds. Inside the paid dashboard, the No-Vig tab pulls live prices from 50+ books. The AI ranks the cleanest sharp-book pairs and devigs them automatically, so you are always reading from the most accurate source.
Outlier detection
When one book drifts away from the sharp consensus by more than 1.5 percentage points, the AI tags it as a potential mispricing and routes the alert to your inbox. You do not have to babysit the screen.
Multi-method agreement
Proportional, additive, power, and Shin methods each return slightly different fair prices. The dashboard runs all four and shows where they agree. When all four converge, you have a high-confidence fair line.
Frequently asked questions
A no-vig calculator removes the sportsbook margin from a posted line and returns the implied fair price. If you compare a book against the no-vig price, the difference is your edge or the book is the juice.
We convert each side American odds to implied probability, sum them, and subtract 1. The remainder is the book margin. A typical 2-way line at -110 / -110 carries about 4.55% vig.
Beyond pure math, the paid dashboard cross-references the no-vig output against a real-time consensus from sharp books like Pinnacle and Circa. If the user-entered no-vig differs from sharp consensus, the AI flags it and suggests which input may be off-market.
Yes. Add a Side C value for draw or 3-way moneyline markets. The same proportional method strips the vig across all three outcomes.
ThunderBet uses the proportional (multiplicative) method, which most pros prefer because it scales the vig relative to each side. The additive method spreads the vig evenly and tends to overprice favorites.
From a fair line to a fair-priced bet
The dashboard pairs no-vig math with live odds from 50+ books, so you don't just calculate the fair price, you bet at the price that beats it.