🧮 Betting Tools Suite

Professional calculators to manage risk and find value.

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Kelly Criterion Calculator

Determines the mathematically optimal stake size to maximize growth while preventing ruin.

Why use this? The Kelly Criterion is used by pro gamblers to manage their bankroll. It suggests betting more when the "Value" is high and less when the edge is small.

Odds Converter

Convert between Decimal, American, and Implied Probability instantly.

Enter a value in either Decimal or American to auto-convert.

Bookmaker Margin (Vig) Calculator

Calculate the "hidden fee" the bookmaker is charging on a market.

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Bookmaker Margin (Vig)