Free probability from odds calculator to calculate probability from odds. Instant results in your browser — no signup.
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Primary answer and useful breakdowns.
Implied probability
25.00%
p = 1 / 4.00
Decimal p
0.2500
Free probability from odds calculator to calculate probability from odds. Instant results in your browser — no signup. From decimal odds D: p = 1/D. From a:b odds: p = a/(a+b).
From decimal odds D: p = 1/D. From a:b odds: p = a/(a+b).
Decimal 4.00 → 25% implied probability.
Real books sum above 100% — this is fair implied probability.