Odds boost calculator

Check any sportsbook odds boost, profit boost, bonus bet or no-sweat bet against the sharp fair price and see its real expected value.

How each offer is valued

• Odds boost: fair win chance × boosted decimal odds − 1.
• Profit boost: winnings are multiplied by 1 + the boost before the same sum.
• Bonus bet: the stake is not returned, so its value is fair win chance × (decimal odds − 1).
• No-sweat bet: a real bet whose loss comes back as a bonus bet, valued at what a bonus dollar is worth to you.

The fair win chance comes from Pinnacle with its margin removed, Polymarket and Kalshi. Parlay legs are multiplied, which assumes they are independent.

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