Betting maths and calculators
What is the implied probability of decimal odds of 1.80?
Direct answer
Decimal odds of 1.80 imply 1 ÷ 1.80 = 0.555555… = 55.56% probability before adjusting for the bookmaker’s margin.
How to use this answer
This answer is based on the mathematical principle or published rule identified in the source below. If the question involves a live betting market, confirm its settlement definition before applying it to a specific bet.
Divide 1 by 1.80: approximately 55.56%, before adjusting for bookmaker margin.
Use the precise stake, decimal odds, market terms and outcome probabilities when calculating the result. Expected value measures an average over hypothetical repetitions, not a guaranteed profit.