What is the Percentile Calculator?
The percentile calculator is a free online tool that helps you work out percentile quickly and accurately. It uses the standard formula Linear-interpolation percentile of the sorted data and shows the result instantly as you type, along with a full breakdown so you can see exactly how the answer was reached.
How to use this calculator
- Enter the data.
- Enter the percentile (e.g. 90).
- See the value at that percentile.
Formula used
Linear-interpolation percentile of the sorted dataExplanation of each input
- Data set (comma separated) โ the data set (comma separated) used in the calculation.
- Percentile (%) โ the percentile used in the calculation.
Understanding your result
- Percentile value โ the calculated percentile value.
Step-by-step calculation
For the example values 10-50, 75th:
- Apply the formula:
Linear-interpolation percentile of the sorted data - Substitute the values: interpolate
- Result: 40
Worked example
| Inputs | 10-50, 75th |
|---|---|
| Working | interpolate |
| Result | 40 |
Benefits and practical uses
This calculator saves you time and reduces errors when you need percentile. It is useful for students, professionals and anyone who wants a fast, reliable answer without manual calculation. Results update instantly, work in your browser and can be copied or shared in one click.
Assumptions and limitations
- Linear interpolation method.
Frequently asked questions
What is a percentile?
The value below which a given percentage of the data falls.
Disclaimer: Results are provided for general information. Please verify important figures independently.