Betting Tools
Convert odds, measure value, and calculate Kelly staking from one page.
Use this tool to convert between fractional odds, decimal odds, and implied probability, then compare your true price with the bookmaker's actual odds to measure value.
Enter fractional odds, decimal odds, or implied probability. The other values update instantly.
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Kelly Staking Calculator
Work out a full Kelly recommendation, apply a fractional Kelly setting, and see a quick bankroll summary instantly.
Use this calculator to estimate how much of your bankroll to stake using the Kelly Criterion. Enter your bankroll, the available decimal odds, and your assessed probability of winning to see a suggested fractional Kelly stake and the expected value of the bet.
Fractional Kelly
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A higher fractional Kelly setting increases the recommended stake size.
Fractional Kelly %
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Recommended Stake
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Expected Value
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Enter your bankroll, odds, and estimated probability to see the Kelly recommendation.