Solve for: z-score from x, mean, sigma raw value x from z, mean, sigma mean from x, z, sigma standard deviation from x, z, mean z from probability or percentile
Raw value (x): Mean (mu): Standard deviation (sigma):
z-score (z):
Probability or percentile: Treat input as percentile (0 to 100) Tail: left-tail: P(Z < z) right-tail: P(Z > z) two-tailed: P(|Z| > |z|) inner: P(|Z| < |z|)
Calculate Reset Settings
Decimal places (output):
Show step-by-step derivation
Display probabilities as percent
Import CSV (one x value per line, optional header): Export results as CSV Add row Clear rows