A flowchart is a diagram that shows the steps of a process in order, using shapes and arrows to represent decisions, actions, and outcomes. It’s a visual map of how something works from beginning to end.
You need one because flowcharts force you to think through every step. When you write it down in words, you miss gaps. When you map it visually, gaps become obvious. Whether you’re explaining a process to someone else, finding inefficiencies in your workflow, or creating instructions for a team, a flowchart makes the invisible visible.
The best part? Flowcharts are surprisingly simple to make. You don’t need special skills or expensive software. You just need to understand the basics and follow a clear method.
The Core Shapes and What They Mean
Every flowchart uses standard shapes. Learning them takes two minutes and saves you from confusion later.
| Shape | Name | Purpose |
|---|---|---|
| Oval or rounded rectangle | Terminator | Start or end point of the process |
| Rectangle | Process | A single step or action |
| Diamond | Decision | A question that branches into yes/no paths |
| Parallelogram | Input/Output | Data entering or leaving the process |
| Arrow | Flow line | Direction of movement through the process |
| Circle | Connector | Links to another part of the flowchart |
The oval starts and ends your flowchart. The rectangle is where most of your action happens. The diamond is where the path splits based on a condition. Everything else is a supporting player.
You don’t need all these shapes for every flowchart. Simple processes use mainly rectangles and arrows. Complex ones with decisions use diamonds. Don’t overthink it.
Step-by-Step: How to Create Your First Flowchart
Step 1: Define the process you’re mapping
Write down what process you want to visualize. Not in detail yet. Just the big picture.
Examples: “How we onboard new employees,” “The customer checkout process,” “How I decide what to eat for lunch.”
Be specific enough that you know where to start and stop. Too broad and your flowchart becomes unwieldy. Too narrow and it loses usefulness.
Step 2: Identify the starting point and ending point
Every process has a beginning and an end. Find them.
The start might be a trigger: “A customer visits our website” or “An employee submits a request.” The end is when the process is done: “Customer completes purchase,” “Request is approved.”
Write these down. They anchor your entire flowchart.
Step 3: List all the steps between start and end
Don’t worry about order yet. Just brain dump every step that happens.
If your process is “How to make coffee,” your steps might be: get beans, grind beans, heat water, add grounds to filter, pour water, wait, pour into cup, add cream, add sugar, drink.
Get messy. Include every small decision. You’ll clean it up next.
Step 4: Arrange steps in order
Now put your steps in sequence. What happens first? Then what?
This is where you spot the gaps. If you can’t explain why one step follows another, you probably need another step in between. Or maybe one step is out of place.
Read through your ordered list out loud. Does it sound right? Does it match what actually happens?
Step 5: Identify decision points
Look for places where the process branches. Where does someone ask a question? Where are there different paths based on a condition?
In the coffee example: “Do you want cream?” Yes leads to one path, no leads to another.
Mark these spots. They become your diamonds.
Step 6: Draw it out
Use paper, a whiteboard, or software. No preference yet.
Start at the top with your oval (start). Draw a rectangle for the first step. Connect it with an arrow to the next step. Keep going.
When you hit a decision, draw a diamond. One arrow leaves for “yes,” another for “no.” These paths may rejoin later or end separately.
End with an oval (end point).
Don’t make it perfect. Messy is fine. The point is getting the logic down.
Step 7: Test the flowchart
Walk someone through it. Not the process itself. Walk them through your diagram.
Can they follow it without asking questions? Does every arrow make sense? Is there any step that feels out of place?
Refine based on feedback. This is normal. Almost no flowchart is right on the first try.
Choosing the Right Tool to Create Your Flowchart
You have options, and the best one depends on what you need.
Paper and pen: Free, fast, no learning curve. Best for personal use or quick planning. Share by taking a photo. Low-tech but effective for many situations.
Microsoft PowerPoint or Google Slides: Built-in shapes, easy to use if you already know the software. Fine for simple flowcharts you might print or share in a presentation.
Lucidchart or Draw.io: Dedicated flowchart software. Lucidchart is popular in businesses. Draw.io is free and surprisingly capable. Use these if you need to create professional flowcharts regularly or share them with teams.
Miro or Mural: Collaborative tools if your team is building the flowchart together remotely. More expensive but worth it for group work.
Microsoft Visio: Industry standard for complex technical flowcharts. Steep learning curve, overkill for most people.
Pick based on simplicity and how often you’ll need flowcharts. Start simple. Upgrade tools later if needed.
Best Practices: Making Your Flowchart Actually Useful
Keep it readable
Use consistent sizing for shapes. Don’t cram too much on one page. If your flowchart needs to scroll in two directions, it’s too dense. Break it into smaller sub-flowcharts instead.
Add labels to every shape. Don’t assume the reader knows what a box means. Write “Approve request” not just “A1.”
Use clear language
Write in active voice. “Customer enters email address” not “Email address is entered by customer.” Shorter is better. Remove jargon unless your audience speaks it natively.
Avoid spaghetti flowcharts
This is the common mistake: lines crossing everywhere, paths tangling, hard to follow. Reorganize so flow moves top to bottom or left to right. It’s worth moving things around to avoid crossings.
Keep decision branches simple
At a diamond, ask yes/no questions. Don’t ask “What color is the car?” at a decision point. Ask “Is the car red?” That gives you two paths, not ten.
Don’t show every micro step
Show the process at the level your audience needs. A detailed flowchart for yourself might have 30 steps. A flowchart explaining the same process to someone new might have 8 steps. Different audience, different detail level.
Use consistent symbols
Stick to standard shapes. Don’t invent new ones. Your reader shouldn’t need a legend to understand what a shape means.
Common Flowchart Mistakes and How to Avoid Them
Missing paths: You show the happy path but forget what happens if something goes wrong. Include the error cases. Include the alternatives.
Unclear decisions: A diamond with three arrows leaving it is confusing. Break it into two diamonds if needed. One question leads to the next.
Unlabeled arrows: Readers can’t tell what condition causes each branch. Label it. “Yes,” “No,” “Approved,” “Rejected.”
Inconsistent style: Some shapes big, some small. Some text large, some tiny. Some rounded corners, some sharp. Pick a style and stick with it.
Too much detail: Flowcharts work because they simplify. If you include every micro step, you lose the benefit. Step back. Show the flow, not the minutiae.
No start or end: Every process has a beginning and end. Mark them. They’re not optional.
How to Share and Update Your Flowchart
If you created your flowchart on paper, take a clean photo and share that. Add it to a document. Print it and post it.
If you used software, export as PDF or PNG if you want people to view only. Export as an editable file if you want them to update it. Be clear about which version they should use.
Create one master version. Don’t let copies scatter everywhere. When the process changes, update the master. Tell people where the master lives.
For team processes, consider a shared tool like Lucidchart or Draw.io where people can access the current version anytime. Better than emailing files back and forth.
Flowcharts for Different Purposes
A flowchart for training looks different from one for troubleshooting, which looks different from one for planning.
Process documentation: Shows every step, includes decision points, meant to teach someone how to do something. Detailed but not overwhelming.
Troubleshooting flowchart: Starts with a problem, branches based on symptoms, ends with solutions. Meant to help someone solve an issue. Shaped like a tree.
Decision tree: Starts with a scenario, branches based on options and outcomes. Helps someone decide. Moves toward recommendations or choices.
System flowchart: Shows how data or materials move through systems. Includes inputs, processes, outputs. More technical. Uses additional symbols.
Know which type you need before you start. It shapes what you include and how you structure it.
Example: Creating a Flowchart for a Real Process
Let’s walk through hiring a contractor.
Define the process: From initial inquiry to contract signed.
Start and end: Start is “Contractor inquiry received.” End is “Contract signed and filed.”
List all steps: Check portfolio, request references, call references, discuss rates and timeline, send proposal, wait for response, revise if needed, contractor reviews, send contract, contractor signs, archive.
Arrange in order: Same as listed above.
Identify decisions: “Is portfolio acceptable?” “Do references check out?” “Does contractor accept proposal?” Each yes/no branches the path.
Draw it: Start oval. “Review portfolio” rectangle. Diamond for portfolio decision. No path circles back to “inform contractor.” Yes path continues to references. Another diamond: references good? And so on.
Test it: Walk through it. Does it match your actual hiring process? Are there steps you skipped? Does someone understand the flow?
Refine: Maybe you need “Schedule meeting” between portfolio and references. Maybe you included something you never actually do. Adjust.
Finalize: Clean it up. Make it look presentable. Share it.
That’s the real process. It’s not complicated. It’s methodical.
FAQs
How many steps should a flowchart have?
Depends on your audience and purpose. A training flowchart might have 10 to 20 steps. A high-level overview might have 5 to 8. If it feels overwhelming, break it into sub-flowcharts.
Can I use flowcharts for non-work processes?
Absolutely. Flowcharts work for anything with steps and decisions. Personal routines, family decision-making, hobby projects. They’re just thinking tools.
What if my process has loops, where you repeat steps?
Use an arrow that loops back. “No, try again” loops back to the step where the issue occurred. This is normal. Show it clearly so readers understand when and why the repetition happens.
Is there a right way to orient a flowchart: top-to-bottom or left-to-right?
Top-to-bottom is standard and easiest to read. Left-to-right works if your process is really wide. Pick one and stick with it.
Should I include every possible exception or just the main path?
Include major branches and important decisions. Don’t include every edge case, or your flowchart becomes unreadable. If you need to show exceptions, create a separate “error handling” flowchart.
Summary
A flowchart is simply a visual representation of a process using standard shapes and connectors. It forces clarity. It makes gaps obvious. It helps others understand how something works.
Create one by identifying the start, listing all steps in order, marking decision points, and drawing it out. Test it with someone else. Refine based on feedback. Pick a tool that matches your needs, from paper to dedicated software.
The time you spend creating a flowchart saves time later. It’s time spent upfront that prevents confusion, errors, and miscommunication downstream.
Start with one simple process. Get comfortable with the method. Build from there. Your ability to visualize and communicate processes is a skill that matters in almost every field.
