Calculator Notepad

Calculator Notepad 1.4.7 CRX for Chrome

A Free Productivity Extension

Published By Sylvester Wilmott

Calculator Notepad (cohaahnhpenkgocdefaacohfgneijecf): A free-form calculator notepad that performs calculations as you type.... Read More > or Download Now >

Calculator Notepad for Chrome

Download CRX


19.78 KB

Chrome Store

Tech Specs

  • • Type: Browser Extension
  • • Latest Version: 1.4.7
  • • Price: Freeware
  • • Offline: No
  • • Developer: Sylvester Wilmott

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Download Count

  • • Total Downloads
  • 2
  • • Current Version Downloads
  • 2
  • • Updated: June 14, 2022

Calculator Notepad is a free Productivity Extension for Chrome. You could download the latest version crx file and install it.

More About Calculator Notepad

Everyday calculations are not just about numbers, they have context in the real world. Calculator Notepad aims to align more closely with everyday scenarios than a traditional calculator. Supports variables, trigonometric functions, mathematical constants, number abbreviations and more.

1. Click the extension icon in the top-right corner of your browser.
2. Take some notes or perform calculations. The results or your expressions will appear in the column on the right.


Calculator Notepad will analyse each line of text that you type and try to evaluate any expressions it finds. Each new line represents a new expression, variable or comment. Click a result in the right column to copy it to your clipboard or shift + click to insert the value back into your expressions.

Variables help to give context to your calculations by letting you assign a value to a word or phrase. Declare a variable by name followed by β€œ=β€œ or β€œis” and the value you want to assign eg:

expenses = 2k
budget is 5000

Once you create your variable, you can reference it at any point after it's declaration eg:

expenses = 2k
subtotal = expenses - 500

Note: Variable names must not contain spaces but can contain underscore(_) characters.

Add comments with your calculations by starting the line with "//" or ending it with ":" eg:

// Total amount
Total amount:


You can set the preferences for how your calculations are displayed by right-clicking the extension icon.

- Choose from system, light or dark themes.
- Choose from monospace or sans serif fonts.


Your work is stored locally and is not sent to any remote server. All of your work remains completely private to you. Calculator Notepad requires no special permissions to work.


If you have any problems or feedback regarding Calculator Notepad, write a review or leave a comment in the support tab.

Download Calculator Notepad 1.4.7

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