No-vig fair odds calculator

Why "no-vig" odds?

At -110 / -110 each side implies 52.4%, which adds up to 104.8%. The extra 4.8 points is the bookmaker's margin. Dividing each side's implied probability by the total (here 104.8%) gives the fair probability, 50% each, and the fair odds, +100.

This simple method (called multiplicative or proportional) is the most common. Sharp, low-margin markets give the most useful fair prices, which is why Coconuts compares books against them.