NORMDIST(x,mean,stddev,cumulative)
The NORMDIST function returns the value of the probability density function or the cumulative distribution function for the normal distribution with the mean given by mean, and the standard deviation given by stddev. If cumulative is FALSE, NORMDIST returns the value of the probability density function at the value x. If cumulative is TRUE, NORMDIST returns the value of the cumulative distribution function at x.
NORMDIST(2,1,2,0) equals 0.176032663.