No-vig odds calculator

What are the true odds behind a sportsbook's price?

A book offering -145 / +125 is asserting probabilities that sum to more than one. Removing that margin gives the favourite:

additive57.37%
multiplicative57.11%
power57.50%
shin57.37%

Consensus 57.34%, and the four methods disagree by 0.39 points. Every other no-vig calculator returns one number.

Where the number comes from

Everything above was computed by the same engine that prices bets, at the moment this page was built — not typed into a template. The build fails if a figure appears here and not in the engine's own output.

How a price is formed →  ·  What a record can prove →