Free Percentile Calculator for Percentile Values, Ranks, Quartiles, and Dataset Position

Paste a numeric dataset to calculate a requested percentile using linear interpolation, or enter a value to estimate its percentile rank within the sample.

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Interactive calculator

Dataset

Mode

Percentile k (0–100)

Value to rank

Requested result—

Median—

IQR—

Paste data and calculate.

How to use it

Paste numeric observations separated by commas, spaces, or line breaks.
Choose Percentile Value to find Pk, or Percentile Rank to rank a specific value.
For percentile value mode, enter k from 0 to 100.
Review quartiles and IQR for broader distribution context.
Check the interpolation step before reporting a rounded answer.

What this calculator includes

1. Percentile valueCalculate P1 through P99 by interpolation.

2. Percentile rankEstimate the rank of a chosen observed value.

3. Automatic sortingSorts data before rank-based calculations.

4. QuartilesShows Q1, median, and Q3.

5. IQRCalculates interquartile range.

6. Min/maxReports dataset endpoints.

7. MeanAdds a central-tendency reference.

8. Dataset countConfirms how many values were parsed.

9. Duplicate handlingKeeps repeated observations in the distribution.

10. Input cleanupAccepts commas, spaces, or line breaks.

11. Step explanationShows the interpolation position.

12. Local historySaves recent percentile queries in-browser.

Result checklist

0 / 5 complete

Inputs use the intended units or interpretation.The formula mode matches the problem.The result magnitude is reasonable.I reviewed the shown calculation steps.I will round only at the final step.

Local calculation history

Formula and reference table

Measure	Meaning	Common use
P25 / Q1	25% of observations are at or below this position	Lower quartile
P50 / Median	Middle of the ordered data	Center
P75 / Q3	75% of observations are at or below this position	Upper quartile
IQR	Q3 − Q1	Middle 50% spread

Quick knowledge check

What must happen before a percentile is located in a dataset?

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Frequently asked questions

Which percentile method is used?

This page uses a common linear interpolation method with position (n−1)×p on the sorted data.

Is percentile rank the same as percentile value?

No. A percentile value finds a data value at a chosen percentile; percentile rank estimates where a chosen value falls in the distribution.

Can I paste repeated numbers?

Yes. Duplicates remain part of the dataset and affect ranks normally.

Is this a medical height or weight percentile calculator?

It can calculate percentiles from numeric data you provide, but it does not include age- or sex-specific clinical reference charts.

Scope and accuracy

Percentile definitions vary across software and fields. This page states and uses one interpolation convention; regulated, medical, or institutional reports may require a different convention.