How to make a flowchart online

A flowchart turns a process into boxes and arrows that anyone can follow at a glance. You do not need expensive software or a design background to make one — you can build a clear flowchart free, right in your browser, with no account and nothing to install.

This guide covers both halves of the job. First, how to design a flowchart that actually communicates: what the standard shapes mean and how to structure a process. Then, how to build it quickly with a free online tool and share it as an image.

What a flowchart is for

A flowchart is the fastest way to make a sequence of steps visible. People reach for one when they need to:

• Document a process so the whole team follows the same steps — approvals, returns, onboarding, support tickets.
• Onboard new people who learn a procedure faster from a picture than from a wall of text.
• Debug logic in code or a workflow by drawing the path and spotting where a branch is missing or loops back.
• Explain a decision to stakeholders by showing exactly where the "yes" and "no" paths lead.

The standard shapes

Flowcharts use a small set of shapes that most readers recognize. Sticking to them makes your diagram instantly readable:

• Oval (terminator) — the start and the end. Every chart begins with one "Start" and finishes at one or more clear "End" points.
• Rectangle (process) — an action or step, such as "Send confirmation email" or "Calculate total." Most of your boxes will be rectangles.
• Diamond (decision) — a question with branching answers, usually Yes/No or True/False. Each branch leaves the diamond as its own arrow.
• Parallelogram (input / output) — data going in or coming out, like "Enter customer details" or "Print receipt."
• Arrows — the flow direction. They connect shapes and tell the reader the order to follow, top to bottom or left to right.

You do not need every shape for every chart. A simple process can be just ovals, rectangles, and arrows. Add diamonds only where a real decision splits the path.

Plan before you draw

The biggest difference between a clear chart and a tangled one is planning. Before you place a single box:

1. List the steps of your process in plain words, in order, from beginning to end.
2. Identify the decision points — anywhere the answer to a question changes what happens next. Those become diamonds.
3. Fix one start and clear ends. A flowchart should have a single entry point. It can have more than one ending (approved / rejected), but each one should be obvious.
4. Choose a direction — top-to-bottom or left-to-right — and keep the whole chart consistent.

Build it with Office Tools Flowchart

Once the steps are mapped out, building the diagram is quick. Open Office Tools Flowchart and follow these steps:

1. Add your first node for the start of the process and label it "Start."
2. Add a node for each step you listed, giving every one a short, clear label.
3. Connect the nodes with arrows in the order the process runs, so the path reads from start to finish.
4. Add your decision nodes and draw one arrow out for each answer, labeling the branches (Yes / No).
5. Arrange the layout — drag nodes so the flow is tidy, arrows do not cross, and the chart reads in one consistent direction.
6. Export as a PNG to drop the finished diagram into a doc, slide deck, wiki, or chat.

Flowchart is a desktop-oriented tool — the larger canvas and mouse make placing and connecting nodes far easier than on a phone.

Common mistakes to avoid

• Crossing arrows everywhere. A web of overlapping lines is hard to follow. Move nodes around until arrows mostly flow one way and rarely cross.
• Ambiguous decision labels. A diamond with unlabeled branches forces readers to guess. Always label which arrow is Yes and which is No.
• Too many steps in one chart. If a diagram sprawls past the screen, split it into smaller charts or collapse a sub-process into a single step.
• Inconsistent shapes. Do not use a rectangle for a decision or an oval for a step. Reusing shapes loosely makes the chart confusing.

Flowchart vs mind map

These two diagrams solve different problems. A flowchart is sequential: it shows a process moving through steps and decisions from a start to an end, so it is right for procedures, logic, and workflows. A mind map is radial: it branches outward from one central idea to capture related thoughts, so it is right for brainstorming and organizing ideas. If you are exploring a topic rather than charting a procedure, reach for the Mind Map tool instead.

Related guides

Working with other diagram and graphics formats? See Create and edit SVG and Open DXF files without AutoCAD. When you are ready to build, jump straight to Flowchart.

Frequently asked questions