Programmer's Calculator

Name: Programmer's Calculator
Rating: 4.6667 (9 reviews)
Author: Andrey Shemetov

Powerful command-line calculator. Converts numbers between different number bases (Hex, Dec, Oct, Bin, Exp) and way more.

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Features & Capabilities

Description:

Powerful command-line calculator. Converts numbers between different number bases (Hex, Dec, Oct, Bin, Exp) and way more. It's easy, powerful and extremely convenient. Give it a try! Let me know if you want other functions added.

Functions:

Command line where any combination of digits, functions, units can be entered. Calculator will analyze the expression and show result in all supported number basis. Special commands include 'help' (shows detailed function description), 'clear' (clears history), 'ts' (converts UNIX timestamp to human time), 'color' (performs web color conversion), 'diff' (calculates the difference in between two dates) and 'age' (calculates age in various units).
Converts numbers between different number bases (Hex, Dec, Oct, Bin, Exp).
Expression parser by math.js. There are hundreds of functions, press F1 for help.
Web color conversion supported by chroma.js.
Graph plotter supported by dygraphs.
Recently used expressions stored into history. History can be reviewed by clicking on history button or by pressing Ctrl+Down.
Click on 'Expr' or 'Res' labels copies expression or result to clipboard. Hold Ctrl for copy non-formatted result.
Calculator can be activated by pressing Ctrl+Shift+6. Keyboard shortcut can be changed in preferences.
Integration with context menu - calculator can be opened with selected text.

The extension is also available for Chrome. Thank you for being interested in Programmer's Calculator. Please submit your suggestions and report issues on support site.

You can contribute by helping translate Programmer's Calculator on Crowdin.

User Growth & Download Statistics

Add-on

By:

Daily users:

Rating:

Version:

1.3 Last updated: 2023-01-06

Version code:

5508768

Creation date:

2019-07-25

Risk:

Permissions:

Size:

468.00KB

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-19

Compare stats and ranking:

Ranking

# 14,936 ▲ 71

Other rankings

#2 in programmer keyword 7

#14 in program keyword 37

#20 in calculator keyword 35 ▼ 1

#24 in ai grammar keyword 72

#26 in calculus keyword 10

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Other platforms

Programmer's Calculator (v1.3)

142 5.00

(5)

For Developers

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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:

Andrey Shemetov

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/programmer-s-calculator/

Website:

https://bitbucket.org/ashemetov/programmerscalculator/issues?status=new&status=open

User Reviews

This is my favourite calculator on Firefox (so much so that it's now my only calculator, aside from one in my phone for when I'm away from my laptop...) The only thing I miss in it is a unit converter (for that, I have to rely on another extension, which lacks a calculator, it only converts units...) Edit: I found a nasty bug! Entering a minus character in the beginning of a calculation crashes Firefox! After entering a minus character, the extension freezes and Firefox stops responding (tabs don't load any more, all extensions freeze...) Restarting the browser doesn't solve the problem, because the minus will be reloaded from the extension's history. The extension needs to be uninstalled to solve it...

by Cy*****, 2025-05-02

by 远离*****, 2025-04-17

by 退出*****, 2025-03-12

View all user reviews ›

Is Programmer's 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.

Programmer's Calculator requires very minimum permissions.

Risk impact analysis details

High Allows reading and modifying clipboard content, which can be sensitive, posing a moderate privacy risk.
Medium ******* ******* ************* ***** *** ** ******* *** **** ******* ****** ******** *******

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.

Programmer's 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 **** ********* *** **** **** *******