Statistics
Percentile Calculator
Use this percentile calculator to estimate values such as the 25th, 50th, 75th, or 90th percentile.
Try an example
Result
Percentile value
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- Interpolated index
- —
- Count
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Student quick launch
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Study path
Use this calculator with
Follow these when you want the formula behind the answer, a short lesson, or nearby tools in the same topic.
What the percentile calculator solves
Use this The percent of values in a data set that fall at or below a given value. calculator to estimate values such as the 25th, 50th, 75th, or 90th percentile.
Formula
How to use it
- Enter data values.
- Enter percentile from 0 to 100.
- Read the interpolated value.
How to read the answer
A percentile value marks where that percent of the data is at or below the value under the chosen method.
Common mistakes and edge cases
- Percentile rank and percentile value are different.
- Methods vary by textbook and software.
- Sort the data before doing percentile work by hand.
Worked examples
75th percentile
Percentile value
83.25
Median as percentile
Percentile value
4
Frequently asked questions
Is the 50th percentile the median?+
Yes, with this interpolation method the 50th percentile equals the median.
Can percentile be 0 or 100?+
Yes. Those return the minimum and maximum values.
About this calculator
- Written by
- mathcheck editorial team
- Last reviewed
- May 15, 2026
Method
- Uses the values entered by the user and stable formulas documented on the page.
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Last updated: May 15, 2026