Percentile Rank Calculator
The reverse of a percentile: starts from a value and finds its standing.
Share sends a link that reopens these numbers. Copy details pastes the full breakdown as a list.
The formula
percentile rank = (values below + ½ × values equal) ÷ n × 100
The tie rule decides how far apart the three figures are. With no ties, the midpoint figure sits half a step above “strictly below”.
What to watch out for
The value need not appear in the list. Test publishers may use their own norm tables, so a rank from a small list is only a description of that list.
Frequently Asked Questions
What is a worked example?
In 55, 60, 62, 70, 70, 75, 81, 88, 90, 95, a score of 70 has 3 values below and 2 equal to it, so its rank is 40%.
Can a percentile rank be 100?
For a value in the list, only by the “at or below” rule. With the midpoint rule, the top value is always a little below 100. A value above the whole list ranks 100 by every rule.