Estimate the joint probability and fair decimal odds of three football bet-builder legs using explicit leg probabilities and a manual dependency adjustment.
Estimate the joint probability and fair decimal odds of three football bet-builder legs using explicit leg probabilities and a manual dependency adjustment.
Calculations run locally in your browser. No betting data is transmitted.
Probabilities of 65%, 55%, and 60% multiply to 21.45%. A factor of 1.00 gives fair odds of about 4.662; offered odds 5.00 imply 20%.
A single factor is only a sensitivity control. Do not infer it from correlation alone, and do not use marginal probabilities as though they were conditional probabilities.
This informational tool does not recommend a wager or guarantee a result. Confirm operator terms and local rules.
Independent joint probability = P1 × P2 × P3. Adjusted joint probability = min(100%, independent probability × dependency factor). Fair odds = 1 ÷ adjusted probability.
No. Every value is entered and calculated locally in your browser; no odds or account data is fetched.
Operators may apply different market definitions, rounding, commission, void, overtime, or jurisdiction-specific rules.
Calculations use JavaScript numeric precision and values are rounded only for display, normally to two decimal places.
No. The output describes the entered numbers and assumptions; it does not predict an event or guarantee a return.
Use calculations to understand arithmetic and assumptions. Set limits, never chase losses, and seek support if betting stops being recreational.
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