Sports Betting Tools

Free calculators to find +EV bets, convert free bets, devig lines, and more.

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Devig Calculator

Remove the vig from bookmaker odds to find true fair probabilities and fair odds.

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Bonus Bet Converter

Calculate the optimal hedge to guarantee profit from a bonus bet or free bet.

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Boost EV Calculator

Determine the expected value of a boosted odds promotion from any sportsbook.

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Parlay Calculator

Combine multiple legs to see total payout, implied probability, and parlay vig.

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Kelly Criterion Calculator

Find your mathematically optimal bet size based on bankroll, odds, and edge.

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Odds Converter

Convert between American, Decimal, and Fractional odds formats instantly.

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Arbitrage Calculator

Find guaranteed profit opportunities by betting both sides across sportsbooks.

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GigaStud
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Arb Scanner

Live arbitrage scanner that finds real-time arb opportunities across all major sportsbooks.

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Hedge Calculator

Lock in profit or minimize loss on an existing bet like a futures wager.

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Middles Calculator

Calculate the expected value when a spread gap lets both sides of a bet win.

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