What are you trying to do with it? What is the distribution you are trying to standardise, and what random variable are you looking to find the probability for?
Say you had a normal distribution with a mean of 62, and a standard deviation of 30, and you wanted to know the probability of a random variable being 95 or less you would do this:
(95-62)/30 = 1.1.
Then you would look up 1.1 in the standard normal distribution table, which gives 0.84134 - which is the probability.