Markdown to HTML Converter (Bidirectional)

Free bidirectional Markdown to HTML converter. Convert Markdown to HTML and HTML back to Markdown with a direction toggle. Handles headings, bold, italic, lists, links, images, code blocks and blockquotes. Runs 100% in your browser, nothing is uploaded.

Paste Markdown or HTML and pick a direction.

How markdown to html converter (bidirectional) works

Markdown is a lightweight markup language that maps to HTML using simple punctuation: # for headings, ** for bold, * for italic, - for list items, and [text](url) for links. The Markdown to HTML direction expands those markers into the corresponding HTML tags and escapes raw angle brackets so embedded code stays safe.

Switch the direction to HTML to Markdown and the converter walks an HTML document and produces the equivalent Markdown: headings become # lines, bold and italic become ** and *, lists become dash-prefixed lines, links and images become [text](url) and ![alt](url), and code blocks become fenced ``` blocks.

The two directions are complementary but not always perfectly reversible because Markdown is a subset of HTML. For example, an HTML table or a span has no direct Markdown equivalent and is reduced to its text content. Use the direction you need for the format you are working in.

Frequently asked questions

Is it an exact inverse in both directions?
Not always. Markdown is a subset of HTML, so HTML to Markdown reduces elements Markdown cannot express (such as tables or spans) to their text. Markdown to HTML, however, reproduces the Markdown faithfully.
What Markdown features are supported?
Headings (h1-h6), bold, italic, inline code, fenced code blocks, ordered and unordered lists, links, images, blockquotes and horizontal rules.
Does it escape raw HTML in the Markdown input?
Yes. Any raw angle brackets in the Markdown input are escaped to entities, so pasted HTML or code samples appear as text rather than being interpreted as live HTML.
Is my data uploaded anywhere?
No. Both conversions run entirely in your browser. Nothing is sent to a server.