Put the converter on your site

Basic embed

Copy this snippet into your HTML wherever you want the converter to appear.

<iframe
  src="https://romanize.net/widget.html"
  title="Roman numeral converter"
  width="440"
  height="150"
  style="border:0;max-width:100%"
  loading="lazy"
></iframe>

Responsive embed

Wrap the iframe to keep it centered and fluid inside a content column.

<div style="max-width:440px;margin:0 auto">
  <iframe
    src="https://romanize.net/widget.html"
    title="Roman numeral converter"
    width="100%"
    height="150"
    style="border:0"
    loading="lazy"
  ></iframe>
</div>

Options

Two optional query parameters on the widget URL, combinable with an ampersand:

• ?n=84 prefills the widget with a number from 1 to 3999, so it opens showing the conversion your article is about (for instance https://romanize.net/widget.html?n=84 opens on 84 = LXXXIV).
• ?theme=dark or ?theme=lightpins the widget to one theme. Without it, the widget follows the visitor's own color scheme.

<iframe
  src="https://romanize.net/widget.html?n=84&theme=dark"
  title="Roman numeral converter"
  width="440"
  height="150"
  style="border:0;max-width:100%"
  loading="lazy"
></iframe>

How it works

The widget loads a single static HTML file from Romanize. There is no external script to trust, no cookies, and nothing your visitors type is sent anywhere. The only network request is the one that loads the widget itself. A small "Powered by Romanize" link sits at the bottom so readers can find the full toolset.

Prefer an API?

If you would rather fetch conversions as data, use the free JSON API instead. It returns the numeral, words and breakdown for any number.

Citing Romanize without the widget

Writing about Roman numerals rather than embedding a tool? Everything on this site is free to reference: the riddle answers, the rejected-forms dataset (CC BY 4.0) and any number page. A plain link is all the attribution asked:

<a href="https://romanize.net/">Roman numeral converter by Romanize</a>

For a specific claim, link the page that states it, for instance https://romanize.net/multiply-to-35 for the multiply-to-35 answer or https://romanize.net/number/84 for what LXXXIV means.

Want something like this on your own site?

If you are here because you need a small, fast, self-contained tool built for your own site rather than an embed of ours, that is what FusionStudios does. They built this one.