FC's Loan Calculator


FC’s Loan Calculator Plugin is a general purpose loan calculator that solves for a monthly loan payment and creates a detailed amortization schedule with date based payments. Additionally, your visitors can view a set of charts so they can visualize the cost of a loan. Your visitors can also select their own currency and date convention used in the loan schedule. This is ideal if site attracts visitors from around the globe. Select from one of four predefined sizes or modify CSS file to customize size and colors. Supports touch and a responsive designed website. The plugin is based on and uses the code from my very popular Loan Calculator.

Rebranding with your site’s brand name is supported and encouraged.

The plugin may be used (a) in a post or page’s content area via a shortcode; or (b) used in a sidebar widget area; or (c) called from any template file. See usage under installation for details.


Either (a) upload the fc-loan-calculator folder with all its files to the /wp-content/plugins/ folder or (b) unzip the plugin’s zip file in the /wp-content/plugins/ folder.

Activate the plugin through the Plugins -> Installed Plugins menu in WordPress


There are 3 mutually exclusive ways you can deploy the calculator to an individual page (though you can use all three methods on different pages within a site):

  1. If you are using widgets, just add the plugin to the sidebar through the Appearance -> Widgets menu in WordPress. Be sure to click Save.
  2. Add the following code to your template where you want the calculator to appear. See below for options.
  3. Add the shortcode [fcloanplugin] in the content area of your page or post and configure shortcode parameters.

Shortcode parameters

* sc_size= tiny | small | medium | large
* sc_custom_style= No | Yes
* sc_add_link= No | Yes
* sc_brand_name= 
* sc_hide_resize= No | Yes
* sc_loan_amt=
* sc_n_months=
* sc_rate=

Examples (1st includes all options):

[fcloanplugin sc_size="tiny" sc_custom_style="No" sc_add_link="Yes" sc_brand_name="Best's Auto" sc_hide_resize="Yes" sc_loan_amt="30000" sc_n_months="60" sc_rate="5.5"]

[fcloanplugin sc_size="small" sc_custom_style="Yes" sc_hide_resize="Yes"]

[fcloanplugin sc_custom_style="No" sc_add_link="Yes" sc_brand_name="Friendly Mortgage" sc_hide_resize="Yes" sc_loan_amt="30000" sc_n_months="60" sc_rate="5.5"]

Optional array parameter passed to show_fcloan_plugin()

Valid values for options are the same as the shortcode above.

<?php show_fcloan_plugin(array('op_size' => "medium",
        'op_custom_style' => "No",
        'op_add_link' => "Yes",
        'op_brand_name' => "Karl's",
        'op_hide_resize' => "No",
        'op_loan_amt' => "32500.0",
        'op_n_months' => "48",
        'op_rate' => "5.5")); ?>


  1. If you want to add your brand to the calculator, the *_add_link option must be set to “Yes” (i.e. create a subtle follow link to financial-calculators.com).
  2. When branding, the brand name will be added before “Loan Calculator”.
  3. If _custom_style is set to “Yes”, the plugin will load fin-calc-widgets-custom.css located in the plugin’s CSS folder. If you set the option to “Yes” without making any changes, the calculator will change to a horrendous red which indicates the custom css is being used.
  4. The plugin is built and tested on HTML5/CSS3 pages.
  5. size (max-width): large: 440px, medium: 340px, small: 290px, tiny: 150px


  1. Redesign that allows multiple calculators to work on the same web page – completed v.1.2.0.
  2. Allow website owner to select a default currency and date format. (This can now be done by patching the code – contact me.)
  3. Give website owners the ability to not let their visitors change the default date format or currency.

Contact me if you would like to help test any of these new features.

Other Calculators

As of this writing, financial-calculators.com has seven plugins listed in the WordPress Plugin Directory with several more available on the website. All plugins have the same general feature set and are consistent in their styling and the way they work. This means you can install all these plugins and maintain a consistent look and feel across your website or blog. If you blog about money, you are encouraged to install all the plugins on your site. It’s simple. The more pages, the more opportunity.

Below links take you to the indicated WordPress Plugin Directory page.

  1. Auto Loan Calculator – solves for several unknowns and creates a payment schedule.
  2. Mortgage Calculator – optionally incorporates points and insurance and creates a payment schedule
  3. Retirement Age Calculator – answers, at what age will I be able to retire given my investment plan?
  4. Retirement Nest Egg Calculator – answers, what will be the value of my retirement fund when I retire?
  5. Retirement Savings Calculator – how much do I have to invest periodically to reach my retirement goal?
  6. Savings Calculator – calculates the results of regular savings and investing

Screenshot (schermate di esempio)

  • The Loan Calculator's front end showing 2 of the 4 configurable sizes at about 70% actual size. Resize buttons are optional.
  • Loan payment schedule shown in a lightbox. User can select how date is displayed from 3 international date conventions.
  • Charts shown in a lightbox.
  • Plugin's settings dialogue, as seen under Appearance Widgets page in WordPress's administration area.


Can the Loan Calculator plugin be used on a commercial website?

Yes. I would be honored. Thanks.

Also, if you happen to be a financial blogger, I would encourage you to add a “Calculators” or “Tools” section to your site and include all my calculators. More content equals more opportunity. I expect to have six plugins by early 2017.

Does your plugin have any embed advertising?

Absolutely not.

Is your plugin self contained?

Yes. 100% of the plugin is installed on your servers. There are no external dependencies.

Does the plugin include any backlinks?

No, not by default. If you decide to brand the calculator with your brand and / or set the add_link option to Yes, one discreet link is added to my site. (User will not know there is a link unless their mouse passes over it.) The link is around the copyright in the lower left. 🙂

Is the calculator plugin responsive?

Yes. I in fact use it on a Bootstrap responsive site.

Does the calculator support touch devices?

Yes. Users can use the calculator from all types of devices.

Do you offer other calculator plugins?

Yes. I have a Mortgage Loan Calculator hosted in this directory. And here is my widgets and plugin page where you’ll find other free plugins as well as some “plus” versions which are free for a limited time only.

I like your plugin and I’d like to contribute something but I notice you don’t have a link for contributions, why not?

Thank you. That’s very kind of you. Actually, you can contribute, and it won’t cost you a cent. Please stop by my website and check it out. In addition to providing some very advanced calculators, I think that I’m the only one who hosts a public question and answer site to provide support. Take a look, and if you like what you see, please spread the word. That’s better than any monetary compensation.


5 Marzo 2018
Great plugin and looks good but the fact that you cant change from dollar to euro without hacking the plugin makes it useless.
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Crediti e riconoscimenti

“FC's Loan Calculator” è un software open source. Le persone che hanno contribuito allo sviluppo di questo plugin sono indicate di seguito.


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Changelog (registro delle modifiche)


  • Slight style changes
  • Tweaks to work better with WordPress 5.0
  • Switched from Bootstrap v3 to Bootstrap v4 utilities. If your site is built using Bootstrap 3, this may cause conflicts. Test on a dev machine.
  • Since there are no user enhancements, I would only upgrade if you have experienced a style issue.


  • Multiple fc calculators can now be used on a single web page.
  • On a few sites, the text in the dropdowns was cut off – fixed.
  • Previously, if site had opted to allow backlinks, 2 had been inserted. Now one is inserted.


  • Updated the CSS so as to resolve a few reported compatibility issues with some sites.
  • Improved layout of international date and currency selection dialogue.


  • Fixed – some installations the currency / date dialog was not accessible because the background overlay was on top of the dialog.
  • Fixed – some installations the Help text was visible on the main page and not just when the Help button was clicked
  • Fixed – missing “+” “-” signs for the optional resizing feature


  • Improved styling
  • Converted project to use a single file CSS regardless of calculator size selected. Single file will be compatible across all financial-calculator.com plugins so site owners can modify style once and copy to all other plugins.


  • Fixed readme.txt, 2 errant commas in source and optional copyright backlinks.


  • First release