Markdown to AsciiDoc Converter
Convert Markdown to AsciiDoc format instantly. Transform markdown syntax into AsciiDoc for technical documentation, books, and Antora documentation sites.
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Complete Guide: Markdown to AsciiDoc Converter
Everything you need to know about using this tool effectively
The Markdown to AsciiDoc Converter transforms Markdown syntax into AsciiDoc format, which is used by Asciidoctor, O'Reilly Atlas, and other documentation toolchains. It converts headings from # to = notation, links from [text](url) to link:url[text], images from  to image:url[alt], and code blocks from triple backticks to [source] blocks. The tool also handles lists, tables, blockquotes, bold, italic, and strikethrough. All processing happens in the browser.
This tool applies regex-based transformation rules to map Markdown syntax to AsciiDoc syntax. For example, # Heading becomes = Heading, [text](url) becomes link:url[text], and ``` code ``` becomes [source]----code----.
Migrating documentation to AsciiDoc
Convert Markdown README files to AsciiDoc for projects that use AsciiDoc.
Converting for Asciidoctor
Transform Markdown content for use with the Asciidoctor processor.
Preparing content for O'Reilly books
Convert Markdown to AsciiDoc format required by some publishers.
Migrating from GitHub to GitLab
Convert Markdown documentation to AsciiDoc for GitLab wikis.
Paste Markdown
Enter Markdown text in the input area.
Convert
Click Convert. The tool generates AsciiDoc output.
Copy or download
Copy the AsciiDoc or download it as a .adoc file.
AsciiDoc uses = for headings (not #). Level 1 is =, level 2 is ==.
Links use link:url[text] syntax instead of [text](url).
Code blocks use [source]---- instead of ```.
Review the output for complex structures that may need manual adjustment.
What Markdown elements are converted?
Headings, links, images, ordered and unordered lists, code blocks, blockquotes, tables, bold, italic, and strikethrough.
Is my content sent to a server?
No. All conversion happens in your browser. Nothing is transmitted.
Is the AsciiDoc valid?
The output follows standard AsciiDoc syntax. Review complex conversions for accuracy.
Can I convert AsciiDoc back to Markdown?
This tool only converts Markdown to AsciiDoc. Use a reverse converter for the other direction.
Does it handle GFM tables?
Yes. GFM pipe tables are converted to AsciiDoc table syntax.