Just because I adore graphs doesn’t mean that I shun tables. I insert the occasional table inside the body of my report. Every report’s appendices are full of tables, tables, and more tables.
In heat tables, higher numbers are darker and lower numbers are lighter. Viewers find patterns in the data much faster than if they were reading line by line of text from the table.
Here’s how to make heat tables in good ol’ Microsoft Excel.
Step 1. Highlight the Cells That You Want to Color-Code
Ignore the categories on the left. Ignore the table headers along the top. Just select the actual numbers or percentages in the body of the table.
Step 2. Click on the Conditional Formatting Icon
It’s hiding in plain sight on the Home tab.
Step 3. Select One of the Color Scales
For sequential patterns, use a one-color scale (e.g., green faded into white). For diverging patterns, use a two-color scale (e.g., red versus blue).
Congratulations, you’re finished! Start exploring your data. Which patterns stand out now?
Bonus! Add White Borders to Differentiate Cells from One Another
White borders help with color printing and with black-and-white printing (so the cells don’t bleed into each other).
Bonus! Sort the Data from Greatest to Least Instead of Alphabetically
Or, from least to greatest, depending on which pattern you want to emphasize. Use the Sort feature or use Filters (Home –> Sort & Filter –> Filter).
Bonus! Adjust the Print Settings so the Heat Table can be Printed or PDF’d
Add a title; repeat the table headings at the top of each page; add a footer with the date and/or page numbers; and adjust the font type and font size. Once you learn to adjust print settings you’ll save hours of time and every printed or PDF’d spreadsheet will look more professional.
Bonus! Customize the Color Palette
Highlight the cells again and return to Home –> Conditional Formatting –> Color Scales –> More Rules.
Select new colors to correspond with the lowest and highest values in your table. You might even match the RGB codes to your organization’s logo.
Have you tried this tutorial? Comment below and link to a screenshot of your own heat table!
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