Markdown ↔ HTML Converter
Convert between Markdown and HTML instantly. Supports headings, bold, italic, links, lists, code blocks, and more. Free, 100% in your browser.
Reference
What is Markdown?
Markdown is a lightweight markup language created by John Gruber in 2004, designed to be easy to read and write in plain text. It converts to structurally valid HTML using simple formatting conventions: # heading, **bold**, *italic*, [link](url), etc. Markdown is the standard for documentation on GitHub, Stack Overflow, Reddit, and most developer platforms. This tool converts both directions — Markdown to HTML and HTML back to Markdown.
Markdown syntax reference
Headings: # H1 through ###### H6. Bold: **text** or __text__. Italic: *text* or _text_. Links: [text](url). Images: . Code: inline with backticks, blocks with triple backticks. Lists: - or * for unordered, 1. for ordered. Blockquotes: > text. Horizontal rule: --- or ***.
Common use cases
Blog publishing — write in Markdown, convert to HTML for your CMS. Documentation — convert README.md files to HTML for static sites. Email templates — draft in Markdown, convert to HTML for email clients. Migration — convert HTML content back to Markdown when moving between platforms. Content editing — preview how Markdown will render as HTML before publishing.
Privacy
All conversion runs 100% in your browser. No data is sent to any server.