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Betting Calculators

Free tools for parlay payouts, EV, Kelly sizing, and more.

Vig Calculator

Enter both sides of a two-sided market to see the vig and the fair no-vig odds.

Total implied104.76%
Vig (juice)4.76%

No-vig fair odds

Side 1+100 (50%)
Side 2+100 (50%)

How it works

Vig (vigorish) is the sportsbook's cut. A standard -110/-110 line has 52.38% implied probability on each side, totaling 104.76%. The 4.76% over 100% is the vig.

The no-vig fair odds remove the book's margin and show you the implied true probability of each outcome. Compare these to your own estimates to find value. This calculator handles moneyline, spread, and totals markets. Three-way markets (like soccer with a draw) are not supported.