Percentile Calculator for Normal Distribution
Convert probabilities to percentile cutoffs for a normal distribution and interpret percentile thresholds with interactive charts.
Percentiles are inverse CDF queries: given a probability p, find xp such that P(X ≤ x_p) = p. This page focuses on that workflow.
Set your mean and standard deviation, then pick p and read the associated percentile cutoff.
Launch the Normal Distribution workspace to plot the curve, inspect PDF/CDF behavior, and compute quantiles and interval probabilities.
Open Interactive Percentile ThresholdWhat is the difference between percentile and probability?
Probability is the area under the distribution; a percentile is the x-value that reaches a chosen cumulative probability.
How do I find the 95th percentile?
Set p = 0.95 in the quantile control and read x_0.95.
Does this work for non-standard normal distributions?
Yes. You can choose any mean and standard deviation, not only mean 0 and standard deviation 1.