📝 Markdown to HTML Converter
By ToolNimba Web Dev Team · Updated 2026-06-19
Paste Markdown above, then press Convert to HTML.
This Markdown to HTML converter turns your Markdown into clean, ready-to-paste HTML. Type or paste your Markdown on the left, and you instantly get a rendered preview plus the raw HTML source you can copy. It handles the everyday building blocks: headings, bold and italic text, inline code, fenced code blocks, links, images, ordered and unordered lists, blockquotes and horizontal rules. Everything runs in your browser, so nothing you type is ever uploaded.
What is the Markdown to HTML?
Markdown is a lightweight markup language created by John Gruber in 2004. The idea is to write structured text using plain, readable punctuation: a hash for a heading, asterisks for emphasis, a hyphen for a list item. That text is then converted to HTML for display on the web. Markdown stays readable even before conversion, which is why it has become the default format for README files, documentation, static-site posts, chat apps, forum comments and note-taking tools.
This converter implements a useful, predictable subset of Markdown rather than every edge case in the wider ecosystem. Block-level elements (headings, lists, blockquotes, code fences, horizontal rules and paragraphs) are detected line by line, and inline elements (bold, italic, inline code, links and images) are applied within each block. Any HTML-special characters in your text are escaped first, so a less-than sign in your prose shows up as a literal character instead of being treated as a tag. That keeps the output safe and prevents stray markup from breaking your page.
There is no single official Markdown standard. The original spec left several behaviours undefined, which led to flavours such as CommonMark and GitHub Flavored Markdown (GFM) that add tables, task lists, strikethrough and fenced code with language hints. This tool sticks to the common core that behaves the same across almost every flavour, so the HTML you copy here will render consistently wherever you paste it.
When to use it
- Turning a Markdown README or blog draft into HTML you can paste into a CMS or web page.
- Previewing how Markdown will render before you commit it to a repository or publish a post.
- Generating clean HTML snippets for an email template or newsletter from quick Markdown notes.
- Teaching or learning Markdown syntax by seeing the HTML it produces side by side.
How to use the Markdown to HTML
- Paste or type your Markdown into the input box, or press Load sample to see an example.
- Press Convert to HTML (the preview also updates as you keep typing).
- Check the rendered preview to confirm it looks the way you expect.
- Press Copy to grab the HTML source from the box below and paste it wherever you need it.
Formula & method
Worked examples
Converting a heading with a bold word and a link.
- Input line: ## Welcome to **ToolNimba**
- The ## prefix with two hashes maps to an h2 element.
- The **ToolNimba** inside is wrapped in a strong element.
- Result: an h2 heading reading Welcome to ToolNimba with ToolNimba in bold.
Result: h2 with the word ToolNimba emphasised in bold
Converting a two-item bullet list with a link.
- Input: a line - First item then a line - See the [docs](https://example.com)
- Both lines start with - and a space, so they form one unordered list.
- Each line becomes an li, and [docs](https://example.com) becomes an anchor element.
- The whole group is wrapped in a single ul element.
Result: A ul with two li items, the second containing a clickable docs link
Markdown syntax and the HTML element it produces
| Markdown | HTML output | Purpose |
|---|---|---|
| # Title | h1 to h6 | Headings, one hash per level up to six |
| **bold** | strong | Bold (strong) text |
| *italic* | em | Italic (emphasised) text |
| `code` | code | Inline code span |
| ``` code ``` | pre + code | Fenced multi-line code block |
| - item | ul + li | Unordered (bullet) list |
| 1. item | ol + li | Ordered (numbered) list |
| > quote | blockquote | Blockquote |
| [text](url) | a | Hyperlink |
|  | img | Image |
| --- | hr | Horizontal rule |
Common mistakes to avoid
- Forgetting the space after a marker. A heading needs a space after the hashes, and a bullet needs a space after the hyphen. Writing #Heading or -item without the space means the line is treated as plain paragraph text, not a heading or list item.
- Putting list items on the same line. Each list item must be on its own line. If you write all items in one line separated by hyphens, the parser sees a single line and cannot split it into separate li elements.
- Expecting raw HTML to pass through. For safety this tool escapes HTML-special characters in your text, so a tag you type in prose is shown literally rather than rendered. Use the Markdown syntax for links, images and emphasis instead of embedding HTML.
- Not leaving a blank line between blocks. Markdown uses blank lines to separate paragraphs and blocks. A heading or list pressed directly against a paragraph with no blank line can merge in ways you did not intend, so keep blocks separated.
Glossary
- Markdown
- A lightweight markup language that uses plain-text punctuation to describe formatting, then converts to HTML.
- HTML
- HyperText Markup Language, the tag-based language browsers use to structure and display web pages.
- Inline element
- Formatting applied within a line of text, such as bold, italic, a link or inline code.
- Block element
- A standalone structural piece such as a heading, paragraph, list, blockquote or code block.
- Fenced code block
- A multi-line block of code wrapped in triple backticks, rendered as a pre and code element.
- Escaping
- Replacing characters like the less-than sign with a safe form so they display as text instead of being read as HTML.
Frequently asked questions
How do I convert Markdown to HTML?
Paste your Markdown into the input box and press Convert to HTML. You will see a live rendered preview and the raw HTML source below it, which you can copy with one click. Everything happens in your browser, so your text is never uploaded.
Which Markdown features are supported?
The converter handles headings (one to six hashes), bold, italic, inline code, fenced code blocks, links, images, unordered and ordered lists, blockquotes, horizontal rules and paragraphs. This is the common core that renders the same across almost every Markdown flavour.
Does it support tables or task lists?
Not in this version. Tables, task lists and strikethrough are extensions added by GitHub Flavored Markdown and CommonMark. This tool focuses on the widely supported core syntax so the HTML it produces is consistent everywhere you paste it.
Is my Markdown sent to a server?
No. The parser is written in plain JavaScript and runs entirely on your device. Nothing you type is uploaded, logged or stored, which makes it safe to use for private notes, drafts or internal documentation.
Why is the HTML I typed showing as plain text?
For safety the tool escapes HTML-special characters in your text, so any tags you type appear literally rather than rendering. Use Markdown syntax such as [label](url) for a link or **text** for bold instead of embedding raw HTML.
Can I copy the HTML and use it on my own site?
Yes. The HTML source box gives you clean output you can paste into a CMS, an email template, a static-site post or any web page. Press Copy to put it on your clipboard, then paste it wherever you need it.