Syntax. WEIBULL.DIST(x;alpha;beta;cumulative)

Definition. This function returns the probabilities of a Weibull-distributed random variable. Use this distribution in a reliability analysis (for example, to calculate a device’s mean time to failure).


  • x (required). The value at which to evaluate the function.

  • alpha (required). A parameter of the distribution.

  • beta (required). A parameter of the distribution.

  • cumulative (required). The logical value that represents the type of the function. If cumulative is TRUE, then WEIBULL.DIST() returns the value of the distribution function that is the probability that the number of random events is between 0 and x. If cumulative is FALSE, the WEIBULL.DIST() function returns the value ...

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