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.

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.

Oct 28, 2025 · Calculate z-scores, convert between z-scores and percentiles, and interpret standard scores. Free advanced calculator with formulas, examples, and detailed explanations.

You can use this Z-Score Calculator to calculate the standard normal score (z-score) based on the raw score value, the population mean, and the standard deviation of the population. How …

How the Z Distribution Calculator Helps Manually calculating Z-scores or probabilities requires looking up long Z tables or using statistical formulas repeatedly. Your Z Distribution Calculator …

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

Use this simple z-Score calculator. Solve for probability, percentile and standard normal distribution curve area. Enter to learn with graphs and plots.

What is Z-Score? The z-score, commonly known as the standard score, z-value, or normal score, is a dimensionless measure that indicates how many standard deviations an event is from the …

First, choose how you want to calculate the z-score. The tool allows you to find the z-value using the row score or data point, sample mean and size, and a data sample.

Free online Z‑score calculator for standard normal: convert scores to Z, percentiles and probabilities with interactive charts.