How to make a flowchart
A flowchart shows a process as boxes and arrows. Done well, anyone can follow it in a minute. This guide covers the symbols, the rules and the mistakes to avoid.
Open the tool: Flowchart Builder
Plan before you draw
- Name the process and who it is for.
- Write down the trigger that starts it and the result that ends it.
- List the steps in order on paper or in a note.
- Mark every point where someone has to decide something.
Rules that keep charts readable
| Rule | Why |
|---|---|
| One direction of flow | Readers follow top to bottom or left to right without searching |
| One action per box | Each box can be checked and improved on its own |
| Every decision has labelled exits | Nobody has to guess which way Yes goes |
| Every path reaches an end | No step is left hanging |
Common mistakes
The most common problems are too much detail, missing No branches and arrows that cross. If a chart needs more than about 15 steps, split it into an overview and separate charts for the details.