How to use this betting tool
- Enter the values shown in the calculator.
- Choose the market or settlement option when available.
- Select Calculate and review the formula, result, and stated assumptions.
#077 · Football Betting Tool
Double Chance Calculator
Combine fair home, draw, and away probabilities into a double-chance probability and fair decimal price.
Calculator
Enter assumptions%
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What this tool calculates
Double chance wins when either of two mutually exclusive match outcomes occurs. The input probabilities should be fair and total 100%.
Combined probability = probability A + probability B; fair decimal odds = 100 ÷ combined percentage.
Results are informational. Confirm final grading, limits, deductions, and promotional terms with the operator.
Worked example
With fair probabilities of 45% home, 28% draw and 27% away, home-or-draw is 73% with fair odds of about 1.37.
| Check | Meaning |
|---|---|
| Inputs | Use the example defaults above |
| Output | Calculated live when you press Calculate |
Tips and limitations
- Use prices and probabilities from the same market and settlement basis.
- Do not treat rounded display values as extra precision.
- Check operator-specific rules before placing or grading a wager.
FAQ
How is double chance calculated?
Combined probability = probability A + probability B; fair decimal odds = 100 ÷ combined percentage.
What odds or probability assumptions does this result use?
The calculation uses only the values entered on this page and the assumptions stated beside the result.
When can the bookmaker settlement differ?
Operator rules can change treatment of voids, dead heats, shortened events, bonuses, commissions, or special settlements.
How does the calculator handle rounding?
Full-precision numbers are used internally; rounding is applied only to the displayed result.
Can this result predict whether a bet will win?
No. It explains betting math or settlement scenarios and does not forecast a future event.
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Calculation notes
| Item | Method |
|---|---|
| Precision | Full precision internally |
| Privacy | Runs locally in your browser |
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