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De-vig calculator
Every price a sportsbook posts bakes in a margin, the vig. This strips it out so you can see the fair number underneath, the same math the whole honest-edge story rests on. Paste both sides of any two-way market (a total, a spread, a moneyline) below.
Placeholders are sample odds, not a live line.
Vig (book hold)·
Fair A·
Fair B·
Brought to you by the Edge Labs research desk. edgelabs.bet
Method: multiplicative de-vig. qi = raw implied probability from each American price. M = qA + qB (the overround). Fair pi = qi / M, so the two fair probabilities sum to 100%.
Market-neutral utility. It computes numbers you supply, it does not predict outcomes or guarantee profit. Compare lines across books and make the call yourself. 21+ · research, not advice.