Z-Score: Height 180 cm, Mean 170 cm, SD 8 cm
A height of 180 cm with mean 170 cm and SD 8 cm gives a z-score of 1.25, meaning this person is taller than about 89% of the population.
How to use this tool
- Enter data point (x), mean (μ) and standard deviation (σ) in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your z-score and the full breakdown beneath it.
Calculate the z-score for a height of 180 cm relative to a population mean of 170 cm and standard deviation of 8 cm.
Frequently asked questions
- What does a z-score mean?
- A z-score of +1 means the value is 1 standard deviation above the mean; −2 means 2 standard deviations below. Z-scores allow comparison across different scales and distributions.