PROBABILITY
How do you calculate implied probability from odds?
Simplified implied probability is calculated by dividing 1 by the decimal odds and multiplying by 100. For example, 1.50 odds imply about 66.67%, 2.00 odds imply 50%, and 2.50 odds imply 40%.
Quick examples
1.50 → 66.67%; 1.80 → 55.56%; 2.00 → 50%; 2.50 → 40%; 3.00 → 33.33%.
Bookmaker margin
The sum of probabilities across all outcomes often exceeds 100%. The difference broadly reflects market margin.
Responsible use
The formula supports comparison but does not replace analysis of context, liquidity, market structure and risk.
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