Quartile calculator

Calculate quartiles to divide your dataset into four equal parts.

Input data

Please load data to configure the calculator

Enter your numeric data directly into the data table or upload a CSV file
Use the "Select Data Column" control to choose which column of data to analyze
The calculator will automatically determine the first quartile (Q1), second quartile (Q2, median), and third quartile (Q3)
View the interquartile range (IQR) which is Q3 - Q1
Examine the visualization to see how your data is distributed across quartiles

Calculate percentiles to determine the position of a value within a dataset.

Calculate the median of your data set. The median is the middle value that separates the higher half from the lower half of your data.

Generate box and whisker plots to visualize data distribution, quartiles, and identify outliers. Perfect for comparing distributions across groups.