How to Make a Rounded Bar Chart in Tableau

The standard bar chart in Tableau gets the job done, but let's be honest - it can look a little rigid and dated. If you want to give your dashboards a modern, polished finish, switching to rounded bar charts is a simple design trick with a huge impact. This article will show you exactly how to transform those sharp-cornered bars into clean, rounded visuals that make your reports look professionally designed.

Graphed

Your AI Data Analyst to Create Live Dashboards

Connect your data sources and let AI build beautiful, real-time dashboards for you in seconds.

Build Your First Dashboard

Why Use a Rounded Bar Chart?

While the default square bar chart is perfectly functional for showing data, visuals matter. A clean, thoughtful design makes your data more approachable and your insights more compelling. Rounded bar charts offer a few key advantages:

• Modern Aesthetics: Rounded corners have a softer, more modern feel. It’s a subtle shift that tells your audience you’ve put thought into the presentation, not just accepted an application’s default settings.
• Better Visual Flow: Curves are often easier on the eyes than sharp angles. The rounded ends can help guide the viewer's eye along the length of the bar, making comparisons feel smoother and more natural.
• They Stand Out: In a world filled with default reports, a customized visual like a rounded bar chart immediately stands out. It shows a higher level of care and can make your dashboard more memorable and engaging.

Creating them isn't an out-of-the-box feature in Tableau, but with a clever trick or two, it’s surprisingly easy to accomplish. We'll walk through two popular methods: a straightforward approach that rounds the top of the bar, and a more advanced technique for creating a full "pill" shape.

Method 1: The Quick Win - The ‘Bar and Cap’ Technique

This is the most common and user-friendly method for creating rounded bars. The secret isn't actually rounding the bar itself, instead, we cleverly place a circle on top of a slightly thinner bar to create the illusion of a single rounded shape. This technique uses a dual-axis chart.

Let's use a sample dataset like Tableau’s Superstore data, visualizing SUM(Sales) by Sub-Category.

AI for Data Analysis

Crash Course

Graphed

Free PDF Guide

AI for Data Analysis Crash Course

Learn how to get AI to do data analysis for you — the best tools, prompts, and workflows to go from raw data to insights without writing a single line of code.

Download Free Guide

Step 1: Build a Standard Bar Chart

This is the easy part. Put your dimension on the Columns shelf and your measure on the Rows shelf.

• Drag Sub-Category onto the Columns shelf.
• Drag Sales onto the Rows shelf.

You should now have a standard vertical bar chart.

Step 2: Duplicate Your Measure and Create a Dual Axis

To layer a circle on top of the bar, we need a second axis.

• Hold down Ctrl (or Cmd on Mac) and drag the SUM(Sales) pill on the Rows shelf right next to itself. This duplicates the pill, creating an identical bar chart below the first one.
• Right-click the second SUM(Sales) pill and select Dual Axis.

Your two charts will now be layered on top of each other. Don't worry if it looks like a chart of circles - we'll fix that next. The most important step here is to ensure the axes are lined up. Right-click one of the vertical axes on an empty area and select Synchronize Axis. If you skip this, your bars and caps won't line up correctly.

Step 3: Change the Mark Types

Now we’ll assign a different shape to each axis. On your Marks card, you’ll see tabs for All, SUM(Sales), and SUM(Sales) (2). This lets you control each layer of the chart independently.

• Click on the Marks card tab for the first SUM(Sales). Change the mark type dropdown from Automatic to Bar.
• Next, click on the Marks card tab for the second SUM(Sales) (2). Change its mark type to Circle.

You’re getting close! You should now see bars with circles sitting directly on top of them.

Graphed

Your AI Data Analyst to Create Live Dashboards

Connect your data sources and let AI build beautiful, real-time dashboards for you in seconds.

Build Your First Dashboard

Step 4: Adjust Sizing and Color for a Seamless Look

This is where the magic happens. We’ll adjust the sizes to create the rounded illusion.

• Go back to the Marks card for the Bar chart (your first SUM(Sales)). Click on Size and move the slider to the left to make the bars thinner.
• Now go to the Marks card for the Circle chart. Click on Size and move the slider to the right, making the circles just slightly wider than your thin bars.
• Finally, make sure the colors match. You can set the color for both marks on the All tab of the Marks card. If you've been working on them individually, just ensure the same color on each. It’s also a good idea to click Color and remove any borders.

And that’s it! You now have clean, modern-looking bar charts with perfectly rounded tops. Hide the right-side axis by right-clicking it and unchecking "Show Header" to clean up the final visual.

Method 2: The 'Full Pill' Technique Using a Line

While the first method is great for bars rounded on one end, you might want a fully rounded "pill" shape, especially for horizontal bar charts. This technique is a bit more advanced but creates a very polished look. It works by drawing a single, very thick line with rounded ends for each data point.

For this to work, we need a way to tell Tableau where the "bar" (our thick line) should start and end.

Step 1: Set the Foundation

• Create a new calculated field called Zero. The formula is simply: 0.
• Place your dimension (e.g., Sub-Category) on the Rows shelf.
• Change the mark type in the Marks card to Line. We are creating bars out of thick lines.
• Drag your real measure (e.g., Sales) to the Columns shelf.
• Drag the new Zero calculated field to the Columns shelf as well, placing it just to the left of SUM(Sales). Now you’ll have Zero and SUM(Sales).

Step 2: Restructure the Pills and Path

This is the key part of the trick. We’ll tell Tableau to draw a line from zero to our sales value for each sub-category.

• Drag the Measure Values pill from the Rows shelf (or from the left sidebar) and drop it on top of the existing Column pills. This will replace Zero and SUM(Sales) with a single Measure Values pill. Your chart will temporarily change.
• Notice a new card called Measure Values appears below the Marks card. Make sure it only contains Zero and SUM(Sales). Remove any other measures.
• Next, drag Measure Names from the Dimensions pane to the Path** target on the Marks card.

You should now see thin lines drawn from the zero-axis to the sales value for each sub-category.

AI for Data Analysis

Crash Course

Graphed

Free PDF Guide

AI for Data Analysis Crash Course

Learn how to get AI to do data analysis for you — the best tools, prompts, and workflows to go from raw data to insights without writing a single line of code.

Download Free Guide

Step 3: Thicken the Line to Create the Bar

All we need to do now is beef up those lines to make them look like bars.

• On the Marks card, click on Size and drag the slider to the right until you have a thickness you like.
• Click on Color and choose a color for your new pill-shaped bars. Removing the borders often provides a cleaner look.

Now you have sleek, fully rounded bar charts that look like they were custom-designed. This technique is especially powerful for horizontal bars, where it creates a very intuitive sense of progress or measurement.

Formatting Your New Charts

No matter which method you use, a few final touches can make your chart even better:

• Clean up Tooltips: Because both methods involve tricks with multiple measures or marks, your tooltips might look messy. Click on the Tooltip target on the Marks card (All tab for the first method) to edit it. Remove any unnecessary field names (like Zero) so the user only sees relevant data, like Sub-Category and Sales.
• Hide Unnecessary Axes/Headers: Once your chart is done, you usually only need one axis for context. Right-click the header of any redundant axis (like the synchronized second axis in the first method) and uncheck Show Header.
• Adjust Gridlines: Rounded bars often look best in a cleaner, more minimalist environment. Consider right-clicking on your chart, selecting Format, and then navigating to the Lines menu. From here, you can set Grid Lines, Zero Lines, and Axis Rulers to None or a faint gray to make your data stand out more.

Final Thoughts

You’ve now learned two effective ways to create rounded bar charts that will elevate your Tableau dashboards from functional to fantastic. Whether you choose the quick "bar and cap" method or the more elegant "full pill" shape, these techniques help you move beyond default settings and build reports that are more engaging and visually appealing for your audience.

While mastering specialized formatting in tools like Tableau is rewarding, it can be time-consuming when you're under pressure to just get answers. We built Graphed because we believe getting insights shouldn't require complex workarounds. Instead of clicking through menus and writing calculated fields, you can just ask a question in plain English like, "Show me last month's sales by sub-category as a bar chart," and get a live, real-time dashboard in seconds, automatically connecting to sources like your e-commerce store or CRM.