Keep it simple & avoid overcomplicating your flowcharts

Keep it simple & avoid overcomplicating your flowcharts

This post was originally published on August 21, 2017, and updated most recently on July 26, 2020.

Flowcharts answer problems. Good flowcharts answer problems directly and efficiently. Master the flowchart rules and flowchart best practices and you’ll be able to create direct visual solutions.

Creating a flowchart, format and design elements should be as simple as possible to make them easily comprehensible. Keep these tips in mind as you get started with your next flowchart.

How to make a flowchart

A flowchart is a visual representation of a process or system. Each step of the process should provide options that will lead to the next step of options until the process is complete.

Before starting with the visual aspect, you must first take the time to brainstorm all aspects of the issue you’re dealing with and all possible solutions or branches that the process could take. It’s easiest to create a well-organized flowchart if you already know what the flow will look like and how many options you need to fit into each area of the chart.

Once you have an idea of what your diagram will look like, you can put together the visuals in Cacoo.

Formatting your flowcharts

While the processes that flowcharts visualize require a lot of creative problem-solving to create, flowcharts themselves are formulaic. Taking creative liberties should be saved for other design projects. The foundations of flowchart design are set in stone at this point.

Flowchart rules to start following

There are a few key rules that go for all flowcharts:

  • Always format your flow from left to right or top to bottom.
  • Run your return lines under your flowchart, making sure that they don’t overlap.
  • Maintain consistent spacing between symbols.
  • Use the correct symbol for each step (diamond shapes are for decisions, rectangles are used for processes, start/end shapes should be the same, etc.)

Flowchart example template from CacooFlowchart example template from Cacoo

Other rules are more flexible. In the case of capitalization, the opinion is changing. Banning all caps was once standard. However, today, many high-quality flowcharts have found ways to use all caps without occupying too much space.


When it comes to length, give your flowchart the resume treatment: keep it to one page. People get lost jumping between pages, rendering your flowchart unreadable. If you find your chart exceeding one page, and you can’t edit any further, break it into multiple charts—each chart also sticking to the one-page rule.

If you find yourself struggling to condense a flowchart, consider:

  • Re-reading it out loud. Deleting redundant words or finding shorter synonyms can save you valuable lines that add up when you require a little more space.
  • Resizing your diagram. Keep in mind your image’s resolution. Don’t go so small that the font becomes blurry or illegible.
  • Playing with fonts. Some business standard fonts are larger than others. Font size also comes into play. Consider scaling that 16 font down to a 14.

Above all else, remember to keep your formatting changes consistent. If not, your flowcharts are sure to look unprofessional and disorganized. Minimalist designs make errors much easier to catch, which is great for proofing your flowchart but not so great if you forget to resize one of your flowchart shapes to match the rest.


Take the time to review each element of your work thoroughly, from design to grammar. Double-check that you’re using the right symbols. Check for consistent fonts and colors. Take a few steps back from your screen, and see if anything stands out that you didn’t notice close up.

These may seem like obvious steps, but you’d be surprised at how many simple errors slip through the cracks. Strive for polished consistency every time.

Designing your flowcharts

Don’t get us wrong, creative designers: Your work is vital to countless projects. However, your creativity needs to be a bit more Frank Stella and a little less Basquiat when it comes to flowcharts. In short, keep in minimal.

Designing with a purpose

First and foremost, a flowchart should clearly demonstrate a flow, like a team hierarchy, operational procedure, or workflow. Their functional purpose is to help people understand how something works. If the page’s ornate design delights the eye but confuses the viewer, you’ve gone too far.

Because the formatting for flowcharts is so structured, most design choices will come down to colors, fonts, and lines. And a lot of creativity can still go into these!

When used effectively, colors can help highlight key elements. You can use color to delineate responsibilities or highlight important areas. Just don’t go overboard. A simplistic palette is a strong choice when it comes to flowcharts.

Flowchart Example 2Flowchart example template from Cacoo


Much like the evolution of using all caps, some design elements have become more flexible over time. The decision symbol, traditionally represented by a diamond symbol, is now sometimes represented with a split-path symbol. Some feel that the diamond symbol is less known to readers and can confuse the flowchart if it breaks the left-to-right text format we mentioned. Instead of dividing at a 90-degree angle as the diamond symbol does, split paths use a forked approach that eliminates the possibility of breaking the standard reading format.

 Triangle vs. Split-path

Triangle vs. Split-path

Opinions vary, so choose what works best for your chart. Whatever you choose, remember to include a legend with your flowchart. As options and opinions vary, providing a key ensures that your readers always understand your work. These may not be the most complex art decisions you make, but they can significantly impact your flowcharts readability.

Adding cross-functionality

After you’ve mastered all these aspects of your flowchart, you can add another dimension yet. Making a flowchart cross-functional means that it shows the process or setup and shows the relationship between the steps. The flowchart can use colors, symbols, or labels to show which member or department is in charge of each step or even milestones that need to be hit between each step. While the cross-functional flowchart is a bit more complicated, it provides miles more information than one that just shows the system.

Final thoughts

Creating a flowchart isn’t as easy as it may seem. But all it takes an eye for detail and a basic understanding of a few industry standards to get started. Templates can also help speed up the process. With these helpful tips, you’ll be on your way to creating functional and beautiful flowchart diagrams for your team.

Cacoo Cacoo is your friendly, neighborhood diagramming app. Since 2009, Cacoo has been helping individuals and teams visualize their ideas with ease. Today, over 2 million users around the world depend on Cacoo to bring their ideas to life.