Free Betting Calculators

Professional-grade sports betting tools - completely free. No account required.

EV Calculator

Calculate expected value, Kelly Criterion stake size, and projected profit for any bet.

No-Vig Calculator

Remove the sportsbook's margin using 5 devig methods - Multiplicative, Power, Additive, Shin, and Probit.

Odds Converter

Instantly convert between American, Decimal, Fractional odds and Implied Probability.

Parlay Calculator

Enter 2 to 15 legs with American odds to calculate combined odds, payout, and implied probability.

Want more than calculators?

TrueVig scans live odds across 8+ sportsbooks to surface +EV opportunities in real time - no manual math required.

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