BETTING CALCULATORS
Professional tools to help you make smarter wagering decisions
Odds Converter
Convert between American, Decimal, and Fractional odds formats instantly
Sharp Implied
Derive no-vig probabilities and implied scores from sharp moneyline, spread, and total
Devig Calculator
Remove bookmaker vig with 5 different methods — EM, MPTO, Shin, Odds Ratio, and Logarithmic
Expected Value (EV)
Determine the expected value of any betting opportunity
Kelly Criterion
Calculate optimal bet sizing based on your edge and bankroll
Parlay Calculator
Calculate potential payouts for 2-10 leg parlay bets
Arbitrage Calculator
Find profitable arbitrage opportunities across 2-3 sportsbooks
Hedge Calculator
Calculate the exact hedge bet needed to guarantee profit or minimize loss
Closing Line Value
Measure how much you beat the closing line — the best predictor of long-term profit
Hold Calculator
See the book's hold percentage, break-even margins, and no-vig fair odds for any two-sided market
Vig Comparison
Compare odds from multiple books on the same market to find the lowest vig and sharpest line
Risk of Ruin
Monte Carlo simulation of bankroll survival — see the probability of going broke given your edge and bet sizing