Given p, an observed proportion or probability:

  Odds = p/(1−p)

  Log-Odds: LO = log[Odds]= log_e[p/(1−p)]

Given the Log-Odds:  Odds = exp[LO]

Given the Odds:  p = Odds/(1+Odds)

Enter any one of these items — p, Odds, or Log-Odds — into the designated cell, then click the «Calculate» button to obtain the corresponding values of the other two. If entering p, the entry can be either a decimal fraction or a common fraction.

p	Odds	Log-Odds
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