Box and Whisker Plot Maker

Enter your data into the box to instantly calculate the five-number summary, quartiles, IQR, potential outliers, and generate a clear box-and-whisker plot.

How to Use this Box Plot Maker?

Using this box and whisker plot calculator is very simple. You just need to follow the steps below:

Select Sample or Population based on your dataset type.
Enter your comma-separated numbers such as 5, 8, 12, 15
Click the Calculate button to generate the box plot.
Review the quartiles, IQR, minimum, maximum, and detected outliers.
Click Reset to clear the input field.

What Is a Box Plot?

A box plot, also called a box-and-whisker plot, is a graphical method used in descriptive statistics to summarize numerical data using quartiles.

It displays the distribution of a dataset based on five key values.

What Are the 5 Numbers in a Box Plot?

A box plot summarizes data using the following five-number summary:

Minimum – The smallest value (excluding outliers if the modified Tukey method is used).
Q1 (First Quartile) – The 25th percentile.
Median (Q2) – The 50th percentile.
Q3 (Third Quartile) – The 75th percentile.
Maximum – The largest value (excluding outliers if applicable).

Box Plot Elements

A box-and-whisker plot consists of several key components. Each element helps interpret data distribution, central tendency, and variability.

Element	Meaning	What It Shows in the Box Plot
Minimum	The smallest data value (or the smallest non-outlier if using Tukey’s method).	Displayed at the end of the lower whisker.
First Quartile (Q1)	The 25th percentile; 25% of values fall below this point.	Forms the lower boundary of the box.
Median (Q2)	The 50th percentile; the middle value of the dataset.	Shown as a line inside the box.
Third Quartile (Q3)	The 75th percentile; 75% of values fall below this point.	Forms the upper boundary of the box.
Maximum	The largest data value (or the largest non-outlier if using Tukey’s method).	Displayed at the end of the upper whisker.
Interquartile Range (IQR)	The difference between Q3 and Q1 (IQR = Q3 − Q1).	Equal to the length of the box; represents spread of the middle 50%.
Box	The area between Q1 and Q3.	Represents the central 50% of the dataset.
Whisker	Lines extending from the box to the minimum and maximum values (or to outlier boundaries).	Show the range and variability outside the middle 50%.

Box and Whisker Plot Maker

How to Use this Box Plot Maker?

What Is a Box Plot?

What Are the 5 Numbers in a Box Plot?

Box Plot Elements

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