Blackout

No-vig fair odds calculator

Strip the bookmaker's margin from a two-way market to see the fair price.

Results appear as you type.

For education only — not betting advice.

How it works

What does no-vig mean?

Books price both sides so their implied probabilities add up to more than 100% — the excess is their margin (the vig). Dividing each side's probability by the total removes it and leaves the fair price.

More calculators

Find props worth calculating

Projections, hit rates and slips for every game — free during the beta.

Open Blackout

For research and entertainment only. 21+.