Percentile calculator

Find a percentile in your own list of numbers.

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Percentile calculator processes your input in this browser. Inputs and results are excluded from analytics. Recent tools save tool names, visit counts and last-visit times. Saved tools store only their names. Draft saving is optional and stays on this device; delete saved text with the draft controls. Loading text from a URL is optional and contacts that server; its URL and your IP address are visible to the server. An optional “Use in” action keeps a handoff in this tab. The next tool removes it on arrival and ignores it if more than a minute has passed.

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Spaces separate values; 1,000 is one value.

Numbers

Percentile (0–100)

Answer

…

Sort the values, then linearly interpolate at zero-based position (count − 1) × percentile ÷ 100.

More results

Precision and calculation record

Decimal places in numeric results and text downloads

Rounding changes displayed numbers, not the calculation. Text, fractions, matrices and CSV schedules keep their own formatting. Automatic keeps up to 12 significant digits, with money shown to cents where applicable.

Saved scenario

Save the current answer, then change an input to compare. This clears when you leave.

Formula and assumptions

This is the inclusive linear-interpolation convention. Nearest-rank and other percentile definitions may differ, especially for small lists.

In a list, use spaces, new lines, semicolons, or commas followed by a space. A comma between groups of three digits is a thousands separator.

Automatic precision shows numbers to 12 significant digits. Thousands separators such as 1,000 are accepted; use a dot for decimals.

Scratch calculator

Check another calculation

Use +, −, ×, ÷, parentheses and %. A percentage is divided by 100. This does not change the main tool.

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Updated 2026-09-26

Using Percentile calculator

Sort the values, then linearly interpolate at zero-based position (count − 1) × percentile ÷ 100.

This is the inclusive linear-interpolation convention. Nearest-rank and other percentile definitions may differ, especially for small lists.

Next: Mean absolute deviation calculator

A worked example

With numbers = 10 20 30 40 50, percentile (0–100) = 25, the percentile value is 20.

Next: Z score calculator

Before you use the result

This is the inclusive linear-interpolation convention. Nearest-rank and other percentile definitions may differ, especially for small lists.

Example results for percentile (0–100)

These examples use Numbers: 10 20 30 40 50. They are reference calculations, not recommended settings.

Percentile (0–100)	Percentile value
12.5	15
25	20
50	30

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ToolOctopus. “Percentile calculator.” Updated 2026-09-26. https://tooloctopus.com/percentile-calculator.

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