How to Chart 24 Hours on a Vertical Axis in Excel: A Step-by-Step Guide

Sometimes, you need to visualize a full day’s worth of data on a single chart, and Excel can help you do just that. By charting 24 hours on a vertical axis, you can analyze trends, monitor processes, or track time-specific data like website traffic or hourly sales. In just a few steps, you can create a clear and concise visual representation of your data that spans a full day.

Step by Step Tutorial: Charting 24 Hours on a Vertical Axis in Excel

Before we dive into the steps, let’s understand what we’re aiming for. By the end of this tutorial, you’ll have an Excel chart with a vertical axis that displays time in 24-hour format, with your data points plotted accordingly. This visualization will help you analyze data over a day’s period at a glance.

Step 1: Enter Your Data

Start by entering your data into Excel, with the time listed in one column and the corresponding data in the next column.

Entering your data correctly is crucial. Make sure your time data is in a 24-hour format to avoid any confusion, especially when it comes past midnight. For example, “14:00” is clearer than “2:00 PM.”

Step 2: Highlight Your Data

Click and drag to highlight the cells that contain your time and data.

When highlighting your data, ensure that you only select the data you want to include in the chart. Excluding any irrelevant data will make your chart more accurate and easier to read.

Step 3: Insert a Chart

With your data highlighted, go to the Insert tab and choose a scatter plot.

Scatter plots work best for this kind of data because they allow for time to be displayed along one of the axes which is exactly what we need.

Step 4: Adjust the Vertical Axis

Right-click on the vertical axis, select ‘Format Axis,’ and adjust the axis to display the 24-hour times.

This is where you customize the axis to fit a 24-hour period. You might need to set the axis bounds and units manually to ensure the times are displayed correctly.

Step 5: Format Your Chart

Add titles, adjust colors, and fine-tune your chart to make the data clear and visually appealing.

Formatting your chart is just as important as the data itself. A well-formatted chart can convey information quickly and effectively, so don’t skip this step!

Once you’ve completed these steps, you’ll have a visual representation of your data plotted against a 24-hour period.

Tips: Making the Most of Your 24-Hour Chart in Excel

  • Always double-check that your times are in 24-hour format before creating your chart.
  • To make your chart easier to read, consider adding gridlines that correspond with major time segments, such as every hour or every half-hour.
  • Customize the colors of your data points to distinguish between different types of data or different periods of the day.
  • If your data spans multiple days, consider creating multiple charts or a dynamic chart that can be adjusted to show different days.
  • Use Excel’s built-in chart templates to save time and ensure consistency if you create 24-hour charts regularly.

Frequently Asked Questions

Can I use AM/PM format instead of 24-hour format for the vertical axis?

While it’s possible to use AM/PM format, it can be confusing when the time goes past midnight. It’s generally clearer to use the 24-hour format.

What kind of data is best suited for a 24-hour vertical axis chart?

This type of chart works well for any data that is collected or measured at specific times throughout a full day, such as hourly sales data, customer service call volumes, or website traffic.

Can I display more than one day on the same chart?

Yes, you can, but it may become cluttered. It’s often better to create separate charts for each day or use filters to switch between days.

How do I ensure the times on the vertical axis are evenly spaced?

When formatting the axis, set fixed intervals for the axis units. For instance, setting it to 1 will ensure each hour is evenly spaced.

Can I add data to the chart after I’ve created it?

Absolutely! You can always add more data to your Excel worksheet and then adjust the chart’s data range to include the new data points.


  1. Enter your data in a 24-hour format.
  2. Highlight the cells with your time and data.
  3. Insert a scatter plot chart.
  4. Adjust the vertical axis to display the 24-hour times.
  5. Format your chart for clarity and visual appeal.


Charting 24 hours on a vertical axis in Excel might seem like a daunting task at first, but as we’ve walked through the steps, it’s actually quite straightforward. Remember, the beauty of Excel is its flexibility and the power it puts in your hands to visualize data in various ways.

By following the steps outlined in this article, you’ve learned not only how to set up a 24-hour chart but also how to make it visually appealing and informative. Don’t forget the tips we shared to enhance your chart further and make it even more impactful.

As you become more comfortable with Excel, you’ll find that these skills are transferable to other types of data visualization projects. Whether you’re tracking the hourly performance of your business, monitoring website traffic, or analyzing customer service inquiries, a well-crafted Excel chart can provide invaluable insights that can drive smart decisions and strategies.

So go ahead, give it a try, and see how a simple chart can bring a whole new perspective to your data analysis. And remember, practice makes perfect. Keep experimenting with different chart types and formatting options to find what works best for you. Happy charting!

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