Percentile Calculator

How to use it

Paste your numbers Separated by commas or spaces.
Choose a percentile Any value from 0 to 100.
Read the result The percentile value plus quartiles and IQR.

Examples

75th of 1–10	7.75
median	middle value

About this tool

Percentiles describe where a value sits within a distribution — the 90th percentile means 90% of the data falls below it. This calculator finds the value at any percentile you choose, using interpolation between the nearest data points.

It also reports the quartiles and the interquartile range, the backbone of box plots and a robust way to summarise spread. Paste a list of numbers and everything updates instantly in your browser.

Frequently asked questions

How is the percentile found?

The data is sorted and the percentile is found by linear interpolation between the closest ranks, a widely used method.

What is the interquartile range?

The IQR is the third quartile minus the first (Q3 − Q1), the spread of the middle half of the data, useful for spotting outliers.

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Updated June 15, 2026