How to use the percentile calculator
Find the value at a given percentile of a data set. Enter data values, percentile in the fields above; the value at percentile is computed instantly and plotted on the chart so you can see how the answer changes.
Common searches this calculator answers include “what is the 90th percentile”, “data percentile”, “quantile”, “calculate percentile”, “find value at percentile”.
Formula
Variables
- d — Data values
- p — Percentile (%)
Worked example
With data values = 55,61,64,68,70,72,75,79,83,92, percentile = 90 %, the calculator gives value at percentile ≈ 83.9.
Frequently asked questions
What is the percentile calculator used for?
Find the value at a given percentile of a data set. It helps with questions such as “what is the 90th percentile”, “data percentile”, “quantile”.
What is the formula for the percentile calculation?
Value at percentile = quant(d,p / 100). Here d is data values, p is percentile (%).
What inputs do I need for the percentile calculator?
You need data values, percentile in %. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use the percentile calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the percentile result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.