Online Percentile Calculator

Find the value at any percentile of a dataset using linear interpolation, plus a full table of percentiles from 0 to 100. Free and instant.

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Answer

Percentile Position Value Percentile Position Value Percentile Position Value
0 45 90
5 50 95
10 55 100
15 60
20 65
25 70
30 75
35 80
40 85

What Is This Tool?

The Percentile Calculator finds the value at a chosen percentile within a list of numbers. You enter your data and the percentile you want, and it returns the matching value, interpolating between data points when the percentile falls between them. It also shows a full table of percentiles from 0 to 100 in steps of 5, so you can see the whole distribution at a glance. The result can be downloaded as a PDF.

How to Use This Tool?

  • Enter your numbers separated by commas or spaces.
  • Enter the percentile you want, from just above 0 up to 100.
  • Click Calculate to see the value and the full percentile table.
  • Click Download Result as PDF to save a copy.

Key Features

  • Calculates the value at any percentile you choose.
  • Uses linear interpolation when the percentile falls between data points.
  • Shows a full table of percentiles from 0 to 100 in steps of 5.
  • Accepts numbers separated by commas or spaces.
  • Download the full table as a PDF.

Examples

  • For the list 10, 2, 38, 23, 38, 23, 21, 234, the 15th percentile is 10.55.
  • The 0th percentile of that data is 2, the smallest value.
  • The 100th percentile is 234, the largest value.
  • The 50th percentile is 23, which is the median.

Common Use Cases

  • Finding where a value sits within a distribution.
  • Interpreting test scores reported as percentiles.
  • Identifying cut-off points such as the top or bottom 10%.
  • Summarizing a dataset across the full 0 to 100 range.
  • Checking percentile calculations for homework or coursework.

Tips & Best Practices

  • Separate every value clearly with a comma or a space.
  • Enter a percentile greater than 0 and no more than 100.
  • Use the full table to compare your percentile against the whole distribution.
  • Remember the 50th percentile is the median of the data.
  • Enter enough data points for the percentiles to be meaningful.

Limitations

  • There are several accepted methods for percentiles, so values may differ from other tools.
  • The percentile must be greater than 0 and at most 100.
  • Values must be separated by commas or spaces, not other characters.
  • Very small datasets can produce percentiles that are not very informative.

Frequently Asked Questions

What is a percentile?
A percentile is a value below which a given percentage of the data falls, so the 90th percentile is the value below which 90% of the data sits.
How does interpolation work here?
When the percentile lands between two data points, the tool estimates a value between them in proportion to how far along the percentile falls.
Is the 50th percentile the median?
Yes. The 50th percentile is the median, the middle of the sorted dataset.
Can I save my result?
Yes. Click Download Result as PDF to save the value and the full percentile table as a file.

Key Terminology

Percentile
A value below which a given percentage of the data falls.
Median
The middle value of a sorted dataset, the same as the 50th percentile.
Interpolation
Estimating a value between two known data points based on position.
Minimum
The smallest value, the 0th percentile of the data.
Maximum
The largest value, the 100th percentile of the data.

Quick Knowledge Check

The 50th percentile is also known as the:
The 100th percentile of a dataset is the:
A percentile tells you: