Betting Calculators
Convert odds. Calculate payouts. Size your stake.
Price comparison
Arbitrage Calculator
Compare odds across outcomes and calculate each stake.
Book A+150
Book B-140
Calculated return+1.7%
Multi-Bet
Parlay Calculator
Calculate combined odds and potential payouts for multi-leg parlays.
LAL -3.5-110
BOS ML-150
Over 215.5-110
Combined odds+507
Strategy
Expected Value
Identify +EV bets and calculate long-term profitability.
Essential
Bet Payout
Calculate potential winnings and profit from any wager.
Stake$100
Odds+150
Payout$250.00
Utility
Odds Converter
Convert between American, decimal, and fractional formats.
American+150
Decimal2.50
Fractional3/2
Analysis
Implied Probability
Convert odds to win percentage and uncover value opportunities.
Odds-110
Win probability52.4%
Risk Mgmt
Hedge Calculator
Lock in profits or minimize losses with optimal hedge bets.
Open bet +300$100
Hedge -120$218.18
Locked profit+$81.82
Advanced
Kelly Criterion
Optimal bet sizing to maximize long-term bankroll growth.
Win prob55%
Odds-110
Kelly stake5.5% bankroll
Analysis
No-Vig Calculator
Strip the bookmaker's margin to reveal true market probabilities.
Market-110 / -110
Vig4.8%
Fair odds+100 / +100