Unit Converter

Simple and powerful toolbar popup with unit conversion. Supports Area, Length, Mass/Weight, Pressure, Force, Speed, Temperature, Time and Volume conversions. Convert imperial to metric and vice versa.
What is Unit Converter?
Unit Converter is a Firefox add-on that simplifies unit conversions. Quickly convert units in area, length, mass/weight, speed, temperature, and more right from your browser toolbar. It supports a range of metric and imperial units for a total of 121 different units of measurement. It's precise, easy to use, and a tool you won't want to browse without.
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Add-on stats

Users: 638 ▲ 11
Rating: 4.35 (17)
Version: 1.5 (Last updated: 2020-04-16)
Creation date: 2018-07-07
Weekly download count: 10
Firefox on Android: No
Risk impact: Very low risk impact
Risk likelihood: Low risk likelihood
Manifest version: 2
Permissions:
  • storage
Size: 50.99K

Ranking

# 3966 ▼ 1
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Other platforms

Unit converter (v1.3)
4.00 (4) 95
Not available on Edge
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Add-on summary

Analyze keywords

Unit Converter is a toolbar popup that aims to be precise and easy to use. Currently supporting 121 units of measurement in the the following categories: Area, Length, Mass/Weight, Pressure, Force, Speed, Temperature, Time and Volume.

Supported units of measurement Area: Acre, Are, Hectare, Square centimetre, Square foot, Square inch, Square kilometre, Square metre, Square mile, Square millimetre, Square yard, Survey township

Energy: Foot-pound, Gram calorie, Joule, Kilocalorie, Kilojoule, Kilowatt hour, Watt hour

Force: Dyne, Kilogram-force, Kilonewton, Kip, Newton, Pound-force, Poundal

Length: Astronomical unit, Cable length, Centimetre, Chain, Decimetre, Fathom, Foot, Furlong, Inch, Kilometre, Light-year, Metre, Micrometre, Mile, Millimetre, Nanometre, Nautical league, Nautical mile, Parsec, Thousandth of an inch, Yard

Mass/Weight: Carat, Grain, Gram, Hectogram, Kilogram, Milligram, Ounce, Pound, Stone, Ton (US), Ton (imperial), Tonne (metric)

Pressure: Atmosphere, Bar, Centimetre of water, Inch of mercury, Inch of water, Kilopascal, Millimetre of mercury, Pascal, Pound per square inch, Torr

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User reviews

These summaries are automatically generated weekly using AI based on recent user reviews. Firefox Browser Add-ons does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
Pros
  • Very complete for usual metric conversions
  • Simple and handy user interface
  • Excellent functionality for very big or very small units
  • Highly useful and thorough unit conversions
Cons
  • Lacks context menu and unit detection
  • Decimates imperial length units, only providing pure decimal form
  • Detected as unsafe by Avast antivirus
  • Incompatibility with newer Firefox standards after updates
Most mentioned
  • User interface simplicity
  • Functionality for metric conversions
  • Concerns about safety and antivirus detection
  • Limitations with imperial conversions
Recent reviews
Useless, no context menu, no unit detection, even no selected number detection... It's basically a separate app in your browser with very poor ergonomics
by Frantz , 2024-08-20
by Larwick, 2024-03-25
by Larwick, 2024-03-25
View all user reviews

Add-on safety

Risk impact

Unit Converter does not require any sensitive permissions.

Risk likelihood

Unit Converter has earned a fairly good reputation and likely can be trusted.

Upgrade to see risk analysis details