Sports Betting Bankroll Calculator

Planning ceilings, not targets

The calculator uses the versioned Forge Plan policy catalog and integer money calculations. Its output is a set of maximum boundaries, not an instruction to spend.

Do not include rent, bills, debt payments, savings, emergency funds, or other money needed for normal expenses in a betting bankroll.

Kelly criterion (optional)

Kelly stake sizing uses American odds and your estimated win probability. Full Kelly can be aggressive; fractional Kelly (for example quarter Kelly) is usually more durable when estimates are uncertain.

Kelly is not a guarantee of growth. If your win-probability estimate is wrong, recommended stakes can be far too large.

No signup required

You can use the calculator without an account. Sign up only if you choose to save a Forge Plan and return for weekly reviews.

FAQ

Is this a free sports betting bankroll calculator?

Yes. You can calculate unit, daily, weekly, and open-exposure ceilings, plus optional Kelly stake sizes, without creating an account. Saved Forge Plans still require signup.

Does Kelly criterion tell me how much I should bet?

No. Kelly is an optional sizing formula based on odds and your estimated win probability. Full Kelly can be aggressive; fractional Kelly is usually more durable when estimates are uncertain. The output is a ceiling, not an instruction to wager.

What money belongs in a betting bankroll?

Only money specifically set aside for betting that can be lost without affecting rent, bills, debt payments, savings, or other normal expenses. Do not treat calculator output as a reason to risk money you cannot afford to lose.