Tools

Free Betting Calculators

All the math you need to bet smarter. No signup required.

Featured
No-Vig / Fair Odds
Remove the sportsbook margin to see the true probability behind any two-way market.
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Hedge Calculator
Calculate the optimal hedge bet to guarantee profit or minimize loss once the market moves.
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More Calculators
EV Calculator
Calculate the expected value of any bet given your edge and stake.
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Kelly Criterion
Optimal bet sizing based on your win probability and bankroll.
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Parlay Calculator
Calculate parlay payouts across 2-12 legs at any odds combination.
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Odds Converter
Convert between American, decimal, fractional, and implied probability.
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Just need to check two prices by hand? Manual Arbitrage Calculator