Calculator to find out the z-score of a normal distribution, convert between z-score and probability, and find the probability between 2 z-scores.

Find the percentage of values below a given z-score in a standard normal distribution.

Use this z table, also referred as z score table, standard normal distribution table and z value chart, to find a z score.

Use this Z table calculator to easily calculate the Z-score from a given raw score. Also computes areas under the normal curve (p -values) cut off by a given score.

Nov 4, 2025 · Z-score calculator computes a standardized z-score for any raw data point x. Enter population mean and standard deviation for a given normal distribution.

Use our free Z Table Calculator to quickly find cumulative probabilities for any Z-score. Simple, accurate, and easy to use online.

Free Z-Score Calculator: Compute standardized scores instantly. Enter raw data, mean & SD. Get step-by-step results + probability interpretation. No signup required.