Quartile Calculator
Find quartiles, median, and interquartile range with selectable methods.
Minimum
4
Q1
8
Median
10
Q3
13.5
Maximum
18
IQR
5.5
Box plot preview
Five-number summary shown as relative bars.
Minimum 4
Q1 8
Median 10
Q3 13.5
Maximum 18
Sorted dataset
Parsed from pasted text, CSV, or table-style input.
| Index | Value |
|---|---|
| 1 | 4 |
| 2 | 7 |
| 3 | 9 |
| 4 | 10 |
| 5 | 12 |
| 6 | 15 |
| 7 | 18 |
Formula
Quartiles can use inclusive median, exclusive median, or interpolated percentile methods.
Find quartiles, median, and interquartile range with selectable methods.
How to Use
Find quartiles, median, and interquartile range with selectable methods. Fill in Values and Quartile method, then review the calculated Minimum, Q1, Median, Q3, Maximum, and IQR.
- Open the calculator : Start with Quartile Calculator.
- Enter values : Fill in the required inputs and any optional settings.
- Review the result : Read the output and use the about page for more detail if needed.
Common Questions
What formula does the Quartile Calculator use?
Quartiles can use inclusive median, exclusive median, or interpolated percentile methods.