In Excel: select the numeric column(s) and choose Insert ▸ Insert Statistic Chart ▸ Box and Whisker — Excel computes the quartiles, median and outliers for you.
On this page7
Put each group in its own column, with the group name in the header row — one column gives one box, four columns give four side-by-side boxes.
Select the data including the headers.
Choose Insert ▸ Insert Statistic Chart ▸ Box and Whisker.
Right-click a box and open Format Data Series to toggle "Show inner points", "Show outlier points" and "Show mean marker".
Under the same panel, pick Inclusive or Exclusive median to match the quartile convention your report uses.
What this does
A box and whisker plot (box plot) summarises a distribution with five numbers: minimum, first quartile, median, third quartile and maximum. The box spans the interquartile range, the line inside it is the median, the whiskers reach the furthest points within 1.5×IQR, and anything beyond that is drawn as an individual outlier dot. Excel 2016 and later ship it as a native chart type, so you no longer need the old stacked-bar workaround. Before you run it on a workbook other people depend on, try it on a copy or a few rows first. Undo only reaches back through the current session, so a quick trial run is the cheapest way to see exactly what will change before the file is saved and shared. Treat “box chart excel” as a small repeatable workflow rather than a one-off click you hope to remember next time. Use a small test block before the live file, so any surprise in the affected chart shows up while it is still harmless. When this is a ribbon command, the selection matters more than the button: confirm the range, apply the command, then spot-check the output before saving. That turns a visual that makes the number obvious at a glance into a method you can reuse, explain, and defend when the workbook leaves your screen.
A worked example
A2:A41 holds 40 support-ticket resolution times in hours. Select A1:A41 and choose Insert ▸ Insert Statistic Chart ▸ Box and Whisker. If the box runs from 3 to 9 with a median line at 5, half of all tickets closed between 3 and 9 hours; a dot at 46 hours is flagged as an outlier rather than being averaged away. A box plot is the fastest honest way to compare several groups at once: it shows level, spread and outliers together, so a difference in averages is never presented without the variation behind it. If this is something you do often, add the command to the Quick Access Toolbar (right-click it on the ribbon and choose Add to Quick Access Toolbar) or learn its shortcut, so next time it is one click instead of a hunt through the menus.
In Google Sheets
This is a command rather than a formula, so there is no syntax to carry over. Google Sheets arranges its commands in menus across the top instead of a ribbon, names some of them differently and does not have every Excel command — look for the equivalent in the Sheets menus or its help before assuming the steps match. Nothing on this page is behind a login or a download: the exact answer is at the top, and the detail below it is there for when you need it. That is the whole promise here — the answer first, and just enough context to make it stick. Treat “box chart excel” as a routine rather than a one-off. Once you know which setting or command controls it, the same few steps handle every workbook where it comes up in Excel, and you can explain them to a colleague in a sentence.
Common mistakes
- Building it from summary statistics instead of raw values — the chart needs the individual observations to compute quartiles itself.
- Comparing groups of very different sample sizes without saying so; a box drawn from 6 points looks as authoritative as one drawn from 600.
- Leaving the default Exclusive median when the rest of the analysis uses QUARTILE.INC, which shifts the box edges.
- Reading the whisker ends as the true minimum and maximum — they stop at 1.5×IQR, and points beyond are plotted separately.
Frequently asked questions
Which Excel versions have a box and whisker chart?
Excel 2016 and later on Windows and Mac, plus Microsoft 365. In Excel 2013 or earlier you have to fake it with a stacked column chart and custom error bars.
What do the dots above the whisker mean?
They are outliers — values more than 1.5 times the interquartile range beyond the box edge. Excel plots them individually so they are not hidden inside the whisker.
Box plot or histogram?
A box plot compares several distributions side by side in a small space; a histogram shows the shape of one distribution in detail. Use a box plot when the question is "which group is higher and more variable".
How do I show the average as well as the median?
Right-click the series, open Format Data Series and tick "Show mean marker" — Excel adds an × at the arithmetic mean alongside the median line.