Trading Calculators
Free tools to find edges, convert bonuses, and understand the math behind sports betting.
Arbitrage
Find locked-in profit across sportsbooks
Free Bet Converter
Convert bonus bets into locked-in cash
Hold
See the sportsbook's built-in margin
Odds Converter
Convert between American, Decimal, and Fractional
Implied Probability
Calculate the implied win probability from odds
Prediction Market
Convert prediction market prices to betting odds
Expected Value
Calculate the expected value of a bet
Kelly Criterion
Optimal bet sizing based on edge and bankroll
Vig / Juice
Calculate the sportsbook's vigorish on a market
No-Vig Fair Odds
Remove the vig to find true fair odds
Half Point
Calculate the cost of buying a half point
Point Spread
Point spread payout and probability calculator
Parlay
Calculate parlay odds, payouts, and implied probability
Round Robin
Calculate all parlay combinations from your selections
Poisson
Score probability distribution for game totals