• Utility corner
Simple Chrome Calculator
Version 0.0.1, June 2015
What is this?
Simple Chrome Calculator is an arithmetic expression evaluator,
designed to run as an app on a Chromebook or other system running
HTML. It provides a number of scientific functions, base conversion,
and user-defined variables.
Most importantly, perhaps, this calculator is designed for offline
operation, something that is still a bit of a rarity in the ChromeOS
To install on a ChromeOS machine, download the CRX file from the link in
the Downloads section by choosing "Save file" from the browser. Older
ChromeOS systems would install an app just by clicking, but Google in its
wisdom has deemed this to be a security hazard, so now there are extra
steps. Save the file in the local filesystem (e.g., the Downloads folder).
Then open the browser's Extensions page (typically under Tools in the
main menu). Drag and drop the CRX file into the Extensions page, and
the browser should ask if you want to install it.
To install on a desktop computer with the Chrome browser, unzip the
source code bundle (also in the Downloads section) into any convenient
folder. Open the Extensions page and choose "Load unpacked extension."
From the file selector, choose the
src directory of
To build from source, unpack the source code bundle, open Chrome,
go to the Extension page, then choose "Pack extension". Find the
src directory of the bundle. Chrome will generate a
CRX file in the directory that contains the
Note that this isn't really 'building' in the conventional sense, just
assembling some files into a CRX.
See the manual.