Normal Distribution Calculator
Enter a value, mean, and standard deviation to compute the z-score, cumulative probability, and percentile rank under the normal (Gaussian) distribution curve.
Inputs
Results
Z-Score
1.0000
P(X <= x)
0.841345
Percentile
84.13%
P(X > x)
0.158655
PDF f(x)
0.024197
68% Range (1 SD)
65.00 to 85.00
95% Range (2 SD)
55.00 to 95.00
99.7% Range (3 SD)
45.00 to 105.00