Percentile Calculator

Find the value at any percentile of a data set, or the percentile rank of a value.

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How to use this calculator

Enter your values after choosing the type of calculation in the tabs. The result updates as you type; press Calculate to confirm and jump to the result on mobile. Use Share to send the calculator with your result.

Methods

Value at percentile uses the inclusive linear-interpolation method (the same as Excel’s PERCENTILE.INC): rank = p/100 × (n − 1), counted from 0 in the sorted list, interpolating between neighbors. For 15, 20, 35, 40, 50 the 40th percentile is at rank 1.6, so 20 + 0.6 × (35 − 20) = 29.

Percentile rank = (values below + ½ × values equal) ÷ n × 100. Different textbooks use slightly different definitions, so small differences are normal.

Frequently asked questions

Is the 50th percentile the median?

Yes.

About this tool

Written by
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Reviewed by
Formula tests passed · human review pending
Last updated
31 Oct 2026

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