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    +EV calculator: no-vig fair odds

    Strip the margin off a sharp market and see the edge in your price.

    The market

    Enter the sharp (fair-ish) price for every outcome, then the odds you can get.

    1.90
    1.95
    Devig method
    Which outcome are you betting?
    0
    $
    0
    25
    %

    25% = quarter Kelly

    Your edge

    What the bet is worth against the de-vigged market.

    Fill in the numbers to see the result.

    How it works

    • Enter a sharp market's prices for every outcome; their implied chances add up to more than 100%.
    • Devigging removes that overround to give each outcome a fair chance and fair odds.
    • EV % = fair chance × your odds − 1. Positive means the price beats the fair one.

    Betting involves risk. Bookmakers can restrict or close accounts and void bets, automation can fail, prices move, and a positive expected value (+EV) bet can still lose. Promotions carry each bookmaker's own terms. There is no guarantee of profit. See responsible gambling for limits and support.

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    By the B337 team. Last updated 8 October 2026.

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