Free Mermaid to Flowchart Converter

Paste your Mermaid code and see it rendered as a beautiful, editable flowchart. Edit visually, then export or copy back to Mermaid.

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Mermaid syntax to visual editor

Escape the text-only Mermaid workflow.

Laptop screen showing a code editor with Mermaid syntax graph TD and node connections A and B

Input (Mermaid)

Generated flowchart rendering the Mermaid source code as visual rectangles and arrows

What the AI produces

Mermaid is text-first by design. Converting here gives you a visual editor for non-engineers and a clean export for slide decks — both things text-only Mermaid struggles with.

What is Mermaid-to-flowchart conversion?

Paste Mermaid `flowchart` or `graph` syntax and Flowova renders it as a real diagram you can edit visually, theme, and re-export. Subgraphs, edge labels, and the standard direction modifiers (TD, LR, BT, RL) are preserved. After editing you can copy the diagram back out as canonical Mermaid — the round-trip works for keeping a README in sync with the visual edits. Sequence and class diagrams are not the target here; use sequence-diagram-maker for those.

Written by Maya Chen

How to Convert Mermaid Code to a Flowchart

1

Paste Your Mermaid Code

Paste Mermaid flowchart syntax (graph TD, graph LR, flowchart TD, etc.). All standard Mermaid features supported: subgraphs, styling, link labels, multiple node shapes.

  • `flowchart TD/LR/BT/RL` directions supported
  • Subgraphs and classDef preserved
  • Up to 20,000 characters per paste
2

See It Rendered Instantly

Flowova parses the Mermaid AST and renders it as a Flowova-native chart with the same structure, then applies a clean theme.

  • Edge labels carry over verbatim
  • Layout direction matches the Mermaid source
  • Sequence and class diagrams not handled here
3

Edit Visually, Export Free

Edit visually — once converted, you have full drag-and-drop, theme selection, and AI Chat Agent (Pro) for modifications. Re-export as Mermaid if you want to push back to the source.

  • Visual edits export back as canonical Mermaid
  • Free PNG and Mermaid export; SVG is Pro
  • Theme without touching the source code

Mermaid to Flowchart Features

Hand-lettered Mermaid code block showing flowchart TD syntax and node connections

Flowchart Syntax Coverage

`flowchart TD/LR/BT/RL`, `graph` (legacy), node shapes (`A[]`, `B()`, `C{}`, `D{{}}`, `E[/\]`), edge styles (`-->`, `-.->`, `==>`), subgraphs, and classDef.

Two rectangles connected by an arrow with the label success floating above it

Edge Labels Preserved

`A -- success --> B` keeps the "success" label on the rendered edge. Direction modifiers (TD becomes top-down, LR becomes left-right) match Mermaid intent.

Circular round-trip loop with Mermaid code on one half and a rendered flowchart on the other

Round-Trip Safe

Edit the diagram visually, export back as canonical Mermaid, and paste into your repo. The output is parseable by Mermaid.js — no manual cleanup needed.

Small flowchart beside a watercolor palette swatch fan with an arrow between them

Theme Independent of Source

Apply any of 40+ Flowova themes for the rendered version without modifying the Mermaid code in your repo. Theme is a rendering choice, source stays clean.

Three platform badges labelled GitHub, GitLab, Notion above a small clean flowchart

GitHub / GitLab / Notion Ready

Round-tripped Mermaid renders natively in GitHub READMEs, GitLab wikis, Notion blocks, and Obsidian without any plugin or pre-rendering step.

Mermaid code block with sequenceDiagram crossed out and flowchart TD written cleanly below

Other Mermaid Types Excluded

Only the `flowchart` and `graph` subsets of Mermaid syntax are parsed here. `sequenceDiagram`, `classDiagram`, `erDiagram`, and `stateDiagram` blocks fall outside the converter's scope because each has a fundamentally different visual model — pasting them returns a clear error rather than a low-fidelity rendering.

When to use mermaid-to-flowchart

Use this tool for

  • You wrote a flowchart in Mermaid for GitHub but stakeholders need a presentable visual without learning the syntax.
  • Migrating a wiki of Mermaid diagrams into an editor where non-engineers can also make changes.
  • Producing slide-ready PNG or SVG of a Mermaid diagram without setting up a local Mermaid CLI or running mermaid.live screenshots.
  • Round-tripping: edit visually here, then export Mermaid back into your repo as the canonical source.

Use a different tool for

  • Mermaid `sequenceDiagram` blocks — this tool only parses the `flowchart` subset; describe the participants and messages in plain English to Sequence Diagram Maker instead.
  • Mermaid `stateDiagram` or `erDiagram` blocks — same rule: describe the states or entities in natural language to State Diagram Maker or ER Diagram Generator.
  • Diagrams that already render fine on GitHub and don't need editing — the official mermaid.live editor is faster for read-only previews.
  • PlantUML source — PlantUML-to-Flowchart has a parser for that syntax.

Mermaid to Flowchart FAQ

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Free Mermaid to Flowchart Converter Online - Visual Editor | Flowova