Percentile Calculator

Summary

Enter a dataset to find the percentile rank of any value, or look up the value at any percentile using linear interpolation.

How it works

1. Enter your dataset as comma-separated numbers in the input box.
2. Choose a mode: "Find Rank" to get the percentile of a specific value, or "Find Value" to get the value at a given percentile.
3. Enter the value or percentile you want to look up.
4. Click Calculate — results appear instantly with a sorted data table.
5. Switch modes at any time without re-entering your dataset.

Use cases

• Determine where a test score falls relative to a class.
• Find the 90th-percentile response time in a performance dataset.
• Analyze salary distributions or pricing data.
• Check if a measurement is in a normal range (e.g., height, weight).
• Compute quartiles (25th, 50th, 75th percentile) for box plots.
• Identify outliers at the extremes of a dataset.

Frequently Asked Questions