ACT Percentile Calculator

Formula

The formula to calculate the ACT percentile is:

\[ P = \left( \frac{S}{T} \right) \times 100 \]

Where:

\( P \) is the percentile rank
\( S \) is the number of test takers who scored lower than you
\( T \) is the total number of test takers

What is an ACT Percentile?

An ACT percentile is a metric used to compare a student’s ACT test score with the scores of other students who took the same test. It indicates the percentage of test takers that a student scored higher than. For example, if a student is in the 90th percentile, it means that they scored higher than 90% of the students who took the same test. This percentile is used by colleges and universities for admissions decisions and scholarship considerations.

Example Calculation

Let's assume the following values:

Number of Test Takers Who Scored Lower (S) = 1,800
Total Number of Test Takers (T) = 2,000

Using the formula to calculate the ACT percentile:

\[ P = \left( \frac{1,800}{2,000} \right) \times 100 = 90 \% \]

The ACT percentile is 90%, meaning the student scored higher than 90% of the test takers.