Unit Converter

Name: Unit Converter
Rating: 4.2105 (19 reviews)
Author: NNKOD

By: NNKOD

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.

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Features & Capabilities

Unit Converter is a precise and user-friendly Chrome extension that lets you quickly convert between 121 units across multiple measurement categories. With support for Area, Length, Mass/Weight, Pressure, Force, Speed, Temperature, Time, and Volume, this toolbar popup simplifies metric-to-imperial and imperial-to-metric conversions seamlessly. Perfect for engineers, students, and professionals, it supports a comprehensive range of units such as kilometres, pounds, kilopascals, knots, and many more. Enhance your productivity by having a reliable, instant conversion tool right in your browser toolbar.

User Growth & Download Statistics

Add-on

By:

NNKOD

Daily users:

534 -10

Rating:

4.21

(19)

Version:

1.5 Last updated: 2020-04-16

Version code:

5006379

Creation date:

2018-07-07

Risk:

Permissions:

storage

Size:

49.79KB

URLs:

Website ,Privacy policy

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-19

Compare stats and ranking:

Ranking

# 4,715 ▼ 43

Other rankings

#10 in united keyword 25 #17 in temperature keyword 17 #33 in convert keyword 30 #91 in conversation keyword 34 ▼ 1#124 in force keyword 24 ▼ 4

Other platforms

Unit converter (v1.3)

71 4.00

(4)

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

NNKOD

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/unitconverter/

Website:

https://codeberg.org/NNKOD/Unit-Converter

User Reviews

Users appreciate the Unit Converter add-on for its convenience, simplicity, and comprehensive metric conversions. However, multiple reviews highlight the absence of keyboard shortcuts and context menu integration, making it less ergonomic. Another common issue is the lack of automatic detection of selected numbers for conversion, requiring manual input. The add-on also falls short in presenting imperial length units in the conventional feet and inches format. Additionally, safety concerns arose due to antivirus flags and compatibility problems with newer Firefox versions, limiting usability for some users.

Pros

Convenient and solid tool for quick unit conversions.
Simple and user-friendly interface making it easy to use.
Comprehensive coverage of common metric conversions.
Helpful for converting very large or very small units.
Effective and accurate unit conversion between metric and imperial systems.

Cons

Lack of keyboard shortcuts or context menu for faster access.
Does not detect or use highlighted/selected numbers for conversion automatically.
Imperial length conversions are only provided in decimal form, not in feet and inches format.
Potential false positive triggering by some antivirus software, causing safety concerns.
Compatibility issues with newer Firefox versions due to updated extension standards.

Recent reviews

Not a good interface.

by Kh*****, 2025-11-26

Solid and convenient tool for converting units on the fly. However, without a keyboard shortcut, I find myself quickly annoyed by having to manually click on the addon icon every time I want to convert something. Please add a shortcut, perhaps even a context menu or the ability for the converter to automatically copy & paste the value being converted if it's highlighted first.

by Fi*****, 2025-07-23

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 Fr*****, 2024-08-20

View all user reviews ›

Is Unit Converter Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Unit Converter does not require any sensitive permissions.

Risk impact analysis details

Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

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

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
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