My Dashboard ...

Listing my notes, favorite calculators, saved entries, etc.

About Web Storage

Web Storage (formally known as HTML5 sessionStorage and localStorage) is a feature that's been added to recent releases of most web browser software (Safari, Edge, Google Chrome, Firefox, etc.).

What Is It?

Specifically, web storage allows web developers to create web apps that can store data to the user's web browser for later recall. This means data is stored on your computer and it can only be accessed by the website where the saved data originated from (similar to "cookies").

Limitations and Drawbacks

Storage Limit: Each web browser limits the amount of data that can be stored by any one website (5-10MB), and no visual cues are displayed once that quota has been exceeded. Therefore it's important to periodically clear stored data you no longer need.

Can't Be Shared Between Devices: Saved data can only be accessed from the same device and web browser it was stored in. For example, if you save a set of calculator entries to Google Chrome on your desktop, you won't be able to recall it from your mobile Safari on your iPhone.

Lost Data Cannot Be Recovered: If you upgrade your web browser, buy a new computer, inadvertently clear your web browser's web storage, etc., there is no way to recover your data. Therefore, if the saved data is important to you, always keep a hard-copy of your printed calculator results, or backup your data to text file on your computer (instructions on Data tab of each calculator).

Support Not 100%: Some web browsers still don't support web storage (Opera Mini for one), and storage may not work while in Private Browsing mode.

Solution to Limitations and Drawbacks

If you subscribe to the Ad-Free Cloud Version of the website, your data is stored in a secure online database, which can be recalled from any device or web browser, doesn't rely on web browser support, has no storage size limitations, and the odds of recovering lost data are much higher (web host backs up database).

        Highlights and Features

        Highlights and Features:

        Top 10s: this tab for an introduction to this section.

        Articles: this tab for links to various articles that are included on the calculator pages.

        Guide: this tab for instructions on how to use this website.

        Pocket Calc: this tab for a handy "pocket" calculator.

        Adjust Calculator Width:

        Move the slider to left and right to adjust the calculator width. Note that the Help and Tools panel will be hidden when the calculator is too wide to fit both on the screen. Moving the slider to the left will bring the instructions and tools panel back into view.

        Also note that some calculators will reformat to accommodate the screen size as you make the calculator wider or narrower. If the calculator is narrow, columns of entry rows will be converted to a vertical entry form, whereas a wider calculator will display columns of entry rows, and the entry fields will be smaller in size ... since they will not need to be "thumb friendly".

        Show/Hide Popup Keypads:

        Select Show or Hide to show or hide the popup keypad icons located next to numeric entry fields. These are generally only needed for mobile devices that don't have decimal points in their numeric keypads. So if you are on a desktop, you may find the calculator to be more user-friendly and less cluttered without them.

        Stick/Unstick Tools:

        Select Stick or Unstick to stick or unstick the help and tools panel. Selecting "Stick" will keep the panel in view while scrolling the calculator vertically. If you find that annoying, select "Unstick" to keep the panel in a stationary position.

        If the tools panel becomes "Unstuck" on its own, try clicking "Unstick" and then "Stick" to re-stick the panel.