Concept Map Generator

What is a concept map?

A concept map is a diagram that shows how ideas relate to one another. Each idea — a concept — sits in a box or circle, and the lines between them carry linking phrases such as “requires”, “is a type of” or “leads to”. Read any two connected concepts with their linking phrase and you get a short, meaningful sentence called a proposition: “Photosynthesis requires sunlight.”

That is what separates a concept map from a simple mind map. A mind map radiates out from one central topic, while a concept map can connect any concept to any other, revealing cross-links and relationships you might otherwise miss. Educators have used concept maps since the 1970s because building one forces you to understand a topic, not just memorise it.

Why use a text-based concept map generator?

Drawing concept maps by hand or in a drag-and-drop editor is slow, and rearranging everything after you add one new idea is frustrating. With this concept map generator you simply write one relationship per line. The layout engine positions every concept, routes every link and keeps the map tidy, no matter how many ideas you add.

Working in text also makes you focus on the relationships themselves. Instead of worrying about where a box should go, you think about the right linking phrase — and that is exactly where the learning happens. When you are done, export a sharp PNG for your notes or slides, or an SVG that you can print at poster size.

How to create a concept map in minutes

1. Pick a focus question. Good concept maps answer a question, such as “How does photosynthesis work?”. Put the main concept at the top, written as PS((Photosynthesis)) to give it a circle shape.
2. List your key concepts. Brainstorm the 10–20 most important ideas. Give each a short ID and a label in square brackets, like SL[Sunlight].
3. Add linking phrases. Connect two concepts with an arrow and a label: PS -->|requires| SL. Use verbs or short phrases so every link reads as a sentence.
4. Find cross-links. Look for relationships between concepts on different branches, such as CL -->|absorbs| SL in the example. Cross-links show deeper understanding.
5. Review and export. Read each proposition aloud, fix anything unclear, then use Export PNG or Export SVG.

Concept map syntax reference

The generator uses a simple, readable syntax. The first line, flowchart TD, lays the map out from top to bottom; change it to flowchart LR for a left-to-right map. After that, each line describes either a concept or a link:

• A[Concept] — a rectangular concept.
• A((Main idea)) — a circle, great for the central or most general concept.
• A(Example) — a rounded box, useful for examples or specific instances.
• A -->|links to| B — an arrow with a linking phrase.
• A --- B — a plain line with no arrowhead, for non-directional relationships.
• A -.->|may cause| B — a dotted link for weaker or uncertain relationships.

flowchart LR
    W((Water cycle)) -->|begins with| E[Evaporation]
    E -->|forms| C[Clouds]
    C -->|produce| P[Precipitation]
    P -->|collects as| R(Rivers and oceans)
    R -->|returns to| E

Concept map examples and ideas

Concept maps work for almost any subject where ideas connect. A few popular examples:

• Biology: photosynthesis, the cell, the human digestive system or food webs.
• History: causes and effects of a war, or how political ideas influenced each other.
• Nursing and medicine: care plans that link a diagnosis to symptoms, interventions and outcomes.
• Business: a product strategy linking customer needs, features and revenue streams.
• Software: domain models showing how the key entities in a system relate before you design the database with an ER diagram tool.
• Literature: characters, themes and how they connect across a novel.

Tips for a great concept map

Keep concept labels short — usually one to three words. Put the most general concepts near the top and the more specific ones below, so the map reads from broad to detailed. Always label your links: an unlabelled line tells the reader that two ideas are related, but not how. Aim for a handful of cross-links; they are often the most insightful part of the map.

If your map gets crowded, split it into two maps or switch the direction to LR. And if what you are really describing is a sequence of steps rather than a web of ideas, the online flowchart maker may suit you better. For comparing what two or three groups share, try the Venn diagram maker.

Frequently asked questions