Betting tools
Sports Betting Calculators
Free Kingpin calculators for odds, payouts, parlays, vig, hedges, and bankroll math. Formulas stay the same in every language.
Formula
- Odds ConverterConvert American, decimal, fractional, and implied probability.
- Bet Payout CalculatorProfit and total payout from stake and American odds.
- Parlay CalculatorCombine American legs into one payout.
- No-Vig / Fair OddsRemove hold from a two-way market.
- Hedge CalculatorSize a hedge to lock a result.
Advanced
- Kelly CriterionBankroll fraction from odds and estimated win rate.
- Arbitrage CalculatorTwo-way dutch/arb stakes across prices.
- Bonus Bet ConverterEstimate profit if a free bet’s stake is not returned.
- Vig / Hold CalculatorOverround and hold from a full market.
- Closing Line ValueCompare your price to the close.
- Middle CalculatorSee whether two spreads can both win.
- Round Robin CalculatorSettle every parlay combination from leg odds and results.
Betting involves risk. Never wager money you cannot afford to lose. Help: ncpgambling.org.