Quartile Calculator
Find the first, second, and third quartiles of a dataset.
Calculate
Enter your values below.
Result
Q1 (25th percentile)
0
Q2 (median)
0
Q3 (75th percentile)
0
Formula used
Q1, Q2, and Q3 split the sorted dataset into four equal parts, at the 25th, 50th, and 75th percentiles.
Example: 1-10 → Q1 = 3.25, Q2 = 5.5, Q3 = 7.75.
How to use this calculator
- Enter Numbers (comma-separated).
- Press Calculate to see your result instantly.
FAQ
Frequently asked questions
What is Q2?
The median — the same as the 50th percentile.
What are quartiles used for?
Summarizing the spread and shape of a dataset, and identifying outliers via the interquartile range.
How many numbers do I need?
At least a few values for quartiles to be meaningful, though the calculator works with any non-empty list.
Where can I find the IQR directly?
Use the dedicated IQR Calculator for just that single value.