New Design Not working For You?

If the new page layout is not working for you, please Contact Me and let me know what device, operating system, and web browser (with version numbers) you are using so I can attempt to get the layout working for your setup.

About the Redesign

If you visited this site prior to September 15th, 2018, you've no doubt noticed that I've since launched a complete redesign of the website.

If you're not happy with the new design, I sincerely apologize. I would have preferred to keep the old desktop design, but considering the majority of my site's users are now accessing the site from small-screen, touch-enabled, mobile devices, and considering Google is now penalizing websites for not being mobile/thumb friendly, I was left with no choice but to switch to a responsive, mobile-first design.

The good news is that now that I have combined the three separate versions of the site (mobile, desktop, and ad-free member) into a single design, this will free up a ton of my time for working to make the mobile-optimized calculators more desktop/laptop friendly. In fact, some of the redesigned calculators already offer a desktop-optimized form that becomes visible when you increase the width setting of the calculator (within the "Calculator Preferences" expandable panel).

Thank you in advance for your help and patience as I work to improve the redesign.



Interactive list of pages located on

Welcome to the Free Online Calculator Use sitemap. This sitemap was designed to help you to quickly find the desired online calculators and self-calculating tools, worksheets and quizzes on -- without having to scroll through a virtual skyscraper of information (though you still have option to do so).

Sitemap Instructions

To quickly find the calculator or support page you are looking for without scrolling, in the search field and begin typing related keywords. This will instantly shorten the list to only those titles and descriptions that contain the text you have typed.

a calculator name to go the calculator's web page.

the plus (+) icon to the right of a calculator's name to view a full description of a calculator.

a category name to go the category's main page to see its full list of calculators.

    Suggestions AppreciatedSuggestions Greatly AppreciatedYour Suggestions Would Be AppreciatedYour Suggestions Would Be Greatly Appreciated
    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.



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