Free tool · Dev Utilities
Markdown ↔ HTML Converter
Convert Markdown to HTML, or HTML back to Markdown.
Convert Markdown text into HTML markup, or convert existing HTML back into Markdown, with the same tool switching direction with one dropdown. Supports common syntax: headings, bold and italic, links, lists, code blocks, and blockquotes. Useful for preparing content for a CMS, a README, or a static site.
- Files never leave your device
- Runs entirely in your browser
- Free, no account needed
How to use Markdown ↔ HTML Converter
Two steps, and nothing to install.
Pick a direction and paste your content
Choose Markdown → HTML or HTML → Markdown, then paste in your content.
Copy or download the result
The conversion updates automatically as you type. Copy it to your clipboard or download it as a file.
More free tools
Free, private, and no sign-up on any of them.
How this works in your browser
This tool uses a small hand-written Markdown parser for the Markdown → HTML direction, and your browser’s native DOMParser for HTML → Markdown, no external Markdown library. Conversion is debounced slightly so a long document does not re-parse on every keystroke while you are still typing.
Markdown ↔ HTML Converter vs. upload-based online tools
| Feature | Markdown ↔ HTML Converter (in-browser) | Upload-based online tools |
|---|---|---|
| File upload required | No - never leaves your device | Yes - file is sent to a server |
| Processing queue | None - starts instantly | Often, especially at peak times |
| Watermark on output | Never | Common on free plans |
| Usage limits | None - free, unlimited use | Often capped per day or file size |
| Works offline once loaded | Yes, for most tools | No - requires a live connection |
| Account required | No | Often, for anything beyond a trial |
Who uses Markdown ↔ HTML Converter
Developers writing documentation
Draft a README or docs page in Markdown, then get clean HTML to paste into a CMS or static site that does not render Markdown natively.
Content teams moving between systems
Convert HTML exported from one platform into Markdown for a system that expects it, or the reverse.
Anyone previewing formatted text
Quickly see what a piece of Markdown or HTML will actually render as.
Frequently asked questions
What it can and cannot do, and what happens to your files.
Is this Markdown/HTML converter free?
Yes, completely free with no limit on how much content you convert.
What Markdown syntax is supported?
Headings, bold, italic, links, images, ordered and unordered lists, code blocks, inline code, and blockquotes.
Will converting HTML back to Markdown be a perfect round trip?
For common formatting it converts cleanly. Complex or unusual HTML (tables, embedded scripts, custom attributes) may not have a clean Markdown equivalent.
Does it convert as I type, or do I need to click a button?
It converts automatically a moment after you stop typing. A Convert button is also there if you want to trigger it immediately.
Is my content sent anywhere?
No, the conversion runs entirely in your browser.
Convert Markdown and HTML - free and instant.
Files never leave your device. No upload, no account, and free for unlimited use.
Also see: Markdown Previewer