Statistics
Percentile Calculator
Use this percentile calculator to estimate values such as the 25th, 50th, 75th, or 90th percentile.
Percentile value
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- Interpolated index
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- Count
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Student quick launch
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Study path
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What the percentile calculator solves
Use this percentile 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.
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Last updated: May 15, 2026