Calculator Firefox

Calculator

A simple calculator that remembers your last calculation. You can close it at any time and reopen it without losing your work.

Features & Capabilities

Calculator is a lightweight and simple Chrome extension providing basic arithmetic functionalities with the added benefit of remembering your last calculation. Designed for ease of use, it supports essential operations and lets you close and reopen the calculator without losing your work.

Key features include full keyboard shortcut support (number pad, enter, clear, delete), offline functionality, copy/paste capabilities, and quick access to functions like percentage, square root, and toggling positive/negative values. Its minimal design ensures quick, hassle-free calculations for everyday math needs, making it an ideal tool for users who want a persistent calculator without complex features.

User Growth & Download Statistics

Manifest V2 Add-on
By:
LinangData
Daily users:
2,287 17
Rating:
4.28
(40)
Version:
1.7.4resigned1 Last updated: 2024-04-25
Version code:
5730116
Creation date:
2018-03-19
Risk:
Very low risk impact Low risk likelihood
Size:
495.64KB
Email:
in*****@linangdata.com
URLs:
Website
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-06-15
Compare stats and ranking:

Other platforms

Chrome
Calculator (v2.0.0)
3,000 4.00 (6)
Edge
Calculator (v1.8.2)
16,729 4.70 (9)

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:
LinangData
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/calculator-basic/
Email:
in*****@linangdata.com
Website:
https://linangdata.com

User Reviews

Users praise the Calculator for its simple, clean UI and practical use, noting fast and precise results. Recurring drawbacks are missing history, lack of parentheses, and limited keyboard input with editing issues (backspace not reliably clearing due to cursor position). Overall, it’s easy to use but lacks essential features for more advanced calculations.
Pros
  • Simple and clean layout
  • Easy to use and navigate
  • Fast and exact calculations
  • Generally positive and practical usability
Cons
  • Missing history feature
  • Backspace/editing problems due to cursor position or backspace not working
  • Limited keyboard support: cannot type symbols or use keyboard
  • No parentheses / lack of grouping and other advanced features
Recent reviews
Why would the Delete or Backspace start all the way to the left when you're trying to correct an input? When you're typing a 12346 instead of 12345, do you pause and think, "Oh no, that's not what I meant, let me delete NUMBER 1"?
by Fi*****, 2026-04-02

Very simple yet effective layout. Minus one star because the cursor moves on the left side of the calculation. This makes it impossible to clear the row via backspace, or delete.
by Fi*****, 2026-03-19

by Ph*****, 2025-05-06
View all user reviews ›

Is Calculator 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.

Calculator does not require any sensitive permissions.

Risk impact analysis details
  • Low This permission has no access or impact on the user's system or data, thus carrying no risk.
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.

Calculator 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.
  • Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
  • Good **** ********* *** **** **** *******
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Best Calculator Alternatives

Here are some Firefox add-ons that are similar to Calculator: