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Free Markdown ↔ HTML Converter

Instantly convert Markdown to HTML or HTML to Markdown — right in your browser. No data is ever uploaded.

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From Markdown
From Plain Text
Markdown Input
HTML Output

100% Private

All conversion happens in your browser. Nothing is sent to our servers.

Instant Results

Conversions happen in milliseconds with no wait time whatsoever.

Full Markdown Spec

Supports headings, bold, italic, tables, code blocks, links, and more.

Download Output

Download your converted file as .html or .md with one click.

What is a Markdown to HTML Converter?

A Markdown to HTML converter transforms Markdown — the lightweight markup language created by John Gruber in 2004 — into valid, browser-ready HTML code. Markdown is the standard writing format on GitHub, Reddit, Notion, Confluence, Dev.to, and thousands of developer platforms. This free tool lets you go in both directions: Markdown to HTML and HTML back to Markdown.

4 Conversion Modes in One Free Tool

1. Markdown → HTML

The most popular use case. Write or paste any Markdown document and instantly get clean, valid HTML output. Supports the full CommonMark and GitHub Flavored Markdown (GFM) spec — headings, bold, italic, tables, fenced code blocks, blockquotes, links, images, and more. Perfect for developers publishing README files, content creators publishing to CMSes, and technical writers exporting documentation.

2. HTML → Markdown

The reverse converter. Paste any raw HTML and get clean, readable Markdown. Ideal for migrating blog content from WordPress or Ghost to Markdown-first platforms like Hugo, Jekyll, or Docusaurus. Also useful for stripping HTML formatting from newsletters and converting them to plain Markdown for storage or editing.

3. Plain Text → HTML

Convert plain text emails, notes, or drafts directly into structured HTML. Blank lines become <p> paragraphs. Lines starting with - or * become <ul> lists. Numbered lines become <ol>. ALL-CAPS single lines become <h2> headings. URLs and email addresses auto-link. Perfect for converting cold email copy, meeting notes, or product descriptions into web-ready HTML.

4. Plain Text → Markdown

Turn unformatted plain text into clean, properly structured Markdown. The same smart detection applies — lists are normalized, headings are converted, and URLs become Markdown links. Great for preparing content for GitHub wikis, Notion imports, or any Markdown-based documentation system.

How to Use This Free Online Markdown Converter

  • Step 1: Choose your conversion mode from the four-button toggle at the top.
  • Step 2: Paste your Markdown, HTML, or plain text into the input panel — or click Example to load a sample.
  • Step 3: Click Convert Now (or press Ctrl+Enter) to generate output instantly.
  • Step 4: Copy the result to clipboard or click Download to save as .html or .md.
  • Step 5: Click Preview HTML to see a live rendered preview of your converted HTML.

Supported Markdown Syntax

This tool parses the full CommonMark + GitHub Flavored Markdown specification — including headings H1–H6, bold, italic, strikethrough, lists, fenced code blocks, inline code, blockquotes, tables, links, images, and horizontal rules.

  • Headings H1–H6 using # notation
  • Bold (**text**) and Italic (*text*)
  • Strikethrough (~~text~~) — GFM extension
  • Unordered Lists (- item) and Ordered Lists (1. item)
  • Fenced Code Blocks with language labels (```javascript, ```python, etc.)
  • Inline Code (`code`)
  • Blockquotes (> text)
  • Links ([label](url)) and Images (![alt](url))
  • Tables — GitHub Flavored Markdown table syntax
  • Horizontal Rules (---)
  • Hard line breaks and paragraphs

Who Uses a Markdown to HTML Converter?

  • Software developers — Publishing README.md files as HTML documentation pages.
  • Content marketers — Writing blog posts in Markdown and exporting to HTML for WordPress, Ghost, or Webflow.
  • Technical writers — Converting API docs and user guides between formats.
  • Email marketers & sales teams — Converting plain text cold emails into HTML-formatted outreach templates. LeadNexus takes this further by automating bulk email outreach from your converted content.
  • DevOps engineers — Generating HTML reports from Markdown-based monitoring documents.
  • Bloggers — Migrating between Jekyll, Hugo, Gatsby and WordPress.
  • Notion & Confluence users — Importing or exporting documentation between platforms.
  • Students & researchers — Converting academic notes to structured HTML for web publishing.

Why Use This Converter Instead of a Desktop App?

Unlike desktop Markdown editors, this tool requires no installation, works on any device (Windows, Mac, Linux, iPhone, Android), and runs entirely in your browser — meaning nothing is ever uploaded to a server. Your content stays completely private, even if you're converting confidential business documents or internal emails.

Frequently Asked Questions

How do I convert Markdown to HTML? +
Paste your Markdown into the left panel, ensure Markdown → HTML mode is selected, and click Convert Now. Output appears instantly on the right. Press Ctrl+Enter to convert without clicking the button.
How do I convert HTML to Markdown? +
Select the HTML → Markdown mode, paste your raw HTML, and click Convert. The converter walks the full DOM tree and handles all major HTML tags — headings, bold, italic, lists, tables, links, images, and code blocks.
Can I convert plain text to HTML? +
Yes — select Text → HTML mode. The tool auto-detects paragraphs (blank line = new <p>), bullet lists, numbered lists, ALL-CAPS headings, and auto-links URLs and email addresses. Smart heuristics distinguish signature blocks from soft-wrapped prose, so line breaks are preserved where you want them.
What is the difference between Markdown and HTML? +
Markdown is a lightweight writing syntax readable as plain text. HTML is the markup language browsers render. Markdown compiles to HTML — for example, **bold** becomes <strong>bold</strong>. This converter handles that transformation in both directions.
Does this support GitHub Flavored Markdown (GFM)? +
Yes. GFM mode is enabled, which supports tables, strikethrough (~~text~~), task lists, and URL autolinks in addition to standard CommonMark syntax.
Is this converter free? Do I need an account? +
100% free, forever. No account, no login, no file size limits, no watermarks. All processing happens in your browser using JavaScript. Your content never leaves your device.

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Turn Your Content Into B2B Revenue

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