Percentile Rank Calculator

What Is Percentile Rank?

Percentile rank tells you what percentage of values in a dataset are less than or equal to a given score. A rank of 64.7 means about 64.7% of observations fall at or below that value. Related tools: Percentile Calculator and Z-Score Calculator.

Percentile Rank Formula

Sort the data, count how many values are less than or equal to your target $x$, then divide by the sample size and multiply by 100.

$$PR = \frac{L}{N} \times 100$$

Here $L$ is the count of values $\leq x$ and $N$ is the total number of values. The result ranges from 0 to 100.

Example

In a class test dataset with 17 scores, a student who scored 25 has 11 scores at or below 25. The percentile rank is $11/17 \times 100 \approx 64.7$.