Z-score Calculator
Compute z-scores, convert between z-scores and probabilities, and find probabilities between z-scores.
Z-score from raw score
The z-score is (x - μ) / σ, where x is the raw score, μ is the mean, and σ is the standard deviation.
Z-score:
Interpretation:
Equation used:
Z-score and Probability Converter
Convert between z-scores and cumulative probabilities from the standard normal distribution.
Probability for z-score:
Z-score for probability:
Probability between Two Z-scores
Calculate the area under the normal curve between two z-scores.
Probability between:
Area: