MetricRules! by SpitFire-666
Converts many imperial units (aka Freedom Units) to metric 📏
Available on Firefox for Android™Available on Firefox for Android™
72 Users72 Users
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About this extension
🆕 Now supports HP (horsepower), Fahrenheit, square inches/feet/miles and even nautical miles!
The addon supports 43 different units are which are converted to metric inline, marked with a ruler emoji 📏
Miles, feet, yards, pounds, gallons, fl oz, pint, mpg, mph are deciphered for the rest of the world. The addon works on Firefox Android 📱 too!
A fork of https://github.com/esprimo/imperial-to-metric-chrome-extension.
The addon supports 43 different units are which are converted to metric inline, marked with a ruler emoji 📏
Miles, feet, yards, pounds, gallons, fl oz, pint, mpg, mph are deciphered for the rest of the world. The addon works on Firefox Android 📱 too!
A fork of https://github.com/esprimo/imperial-to-metric-chrome-extension.
Rated 4.1 by 7 reviewers
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More information
- Add-on Links
- Version
- 0.7
- Size
- 46.74 KB
- Last updated
- 2 days ago (Jun 27, 2026)
- Related Categories
- License
- Mozilla Public License 2.0
- Version History
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