Tool · free to use, no attribution required
Embed a converter
The widget is the same converter this site runs, with the chrome removed: exact rational
arithmetic, a unit picker for the whole category, and a result that works before its
JavaScript loads. One <iframe>, no script tag, no tracking.
Live preview
What the widget does and does not do
- It converts between every unit in the category you choose, not just the two you set.
- It renders its first answer server-side, so it is readable the instant the frame paints — before, and without, any script.
- It sets no cookies and loads no third-party code. Advertising is stripped from the embedded page entirely.
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It respects
prefers-reduced-motionand the visitor's colour scheme unless you pin a theme.
Sizing
The frame is responsive in width and fixed in height. A category with long unit names needs
a little more room; 330 px suits most, and 380 px is comfortable everywhere. Set
width:100% on the iframe and let your own layout decide the rest.