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Percentile calculator

Find the value at a given percentile in a list of numbers.

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Enter Numbers (comma-separated), Percentile (0–100) and the Percentile calculator works out Value at percentile straight away. For instance, with Numbers (comma-separated) = 2, 5, 7, 8, 10, 13, 18, 21, 25, 30 and Percentile (0–100) = 90 it returns Value at percentile = 25.5.

How to use it

  1. Enter your values: Numbers (comma-separated), Percentile (0–100).
  2. Read the result instantly: Value at percentile.

Frequently asked questions

How does the Percentile calculator work?

It takes Numbers (comma-separated) and Percentile (0–100) and derives Value at percentile from them. The calculation is live as you type, so the result updates on every change.

Which values does the calculator ask for?

2 values: Numbers (comma-separated) and Percentile (0–100). Nothing else is required — no account, no file upload.

What does a typical calculation look like?

With Numbers (comma-separated) = 2, 5, 7, 8, 10, 13, 18, 21, 25, 30 and Percentile (0–100) = 90, the calculator returns Value at percentile = 25.5. Those figures come from running this exact tool, so you can reproduce them by entering the same values.

How much does the result change with different inputs?

It moves a lot. Using Numbers (comma-separated) = 2, 5, 8, 9, 12, 16, 23, 28, 35, 44 and Percentile (0–100) = 99 instead, Value at percentile goes from 25.5 to 43.19 — which is why it is worth testing a few scenarios rather than trusting a single figure.

What does it give for smaller values?

Scaled down to Numbers (comma-separated) = 2, 5, 7, 8, 10 and Percentile (0–100) = 81, Value at percentile comes out at 8.48. The relationship is worth checking at both ends before you rely on a single result.

When would I actually use this?

Summarising a dataset before drawing conclusions from it, checking whether a difference between two groups is real, and putting an interval around an estimate.

What is the most common mistake?

Reading a p-value as the probability that the hypothesis is wrong. It is the probability of seeing data at least this extreme if the null were true — a different statement, and a much weaker one.

What is the difference between the Percentile calculator and the Coefficient of variation calculator?

This one returns Value at percentile; the Coefficient of variation calculator returns Coefficient of variation and Mean. That is the whole difference — open the one whose figure you need.

Is there a tool for the next step?

Correlation coefficient calculator is the closest one after this: Compute Pearson's correlation coefficient between two lists of numbers.

What else is worth having open alongside it?

Expected value calculator and Geometric mean calculator — they come up in the same task often enough to be worth a second tab.

Further reading

All guides →
ExplainerWhat Is a Percentile? The 90th Percentile ExplainedA percentile tells you where a value ranks within a group. Learn what the 90th percentile really means and why a percentile is not the same as a percentage.ExplainerGeometric vs Arithmetic Mean: Which to UseThe arithmetic mean adds and divides; the geometric mean multiplies and takes a root. Learn which fits growth rates, ratios, and averages.How-toHow to Calculate Percent Error: The Accuracy Formula for SciencePercent error tells you how close a measurement is to the true value. Learn the formula, work through an example, and see how scientists use it to judge accuracy.ExplainerPercentage Difference vs. Percentage Change vs. Percentage ErrorThree percentages that look alike but answer different questions. Learn the formula for each, when to use it, and why they give different numbers.How-toHow to Calculate Standard Deviation (Step by Step)Standard deviation measures how spread out your data is. Here's the formula, a worked example, and the difference between population and sample.How-toHow to Calculate a Weighted AverageA weighted average gives some values more influence than others. Learn the Σ(w·x) / Σw formula with grade and portfolio examples you can follow step by step.