Tools

Free Betting Calculators

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

📐
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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✂️
No-Vig / Fair Odds
Remove the sportsbook margin to see the true probability.
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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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📈
Implied Probability
Turn any set of odds into a win percentage instantly.
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🛡️
Hedge Calculator
Calculate the optimal hedge bet to guarantee profit or minimize loss.
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⚡
Arbitrage Finder
Find and size arbitrage bets across any two prices.
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