FC Loan Calculator

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A popular, full-featured, loan calculator plugin by financial-calculators.com. Includes a schedule and charts. Supports international conventions.

Author:financial-calculators.com (profile at wordpress.org)
WordPress version required:2.9.0
WordPress version tested:5.4.2
Plugin version:1.4.2
Added to WordPress repository:23-11-2016
Last updated:17-06-2020
Rating, %:60
Rated by:2
Plugin URI:https://financial-calculators.com/calculator-...
Total downloads:0
Active installs:700+
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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=
* sc_currency=
* sc_date_mask=

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" sc_currency="83" sc_date_mask="2"]

[fcloanplugin sc_size="small" sc_custom_style="Yes" sc_hide_resize="Yes" sc_currency="83" sc_date_mask="2"]

[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",
        'op_currency' => "999",
        'op_date_mask' => "999"
        )); ?>


  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
  6. The modal dialog that allows users to select a default currency and date format is NOT compatible with some other dialogs. If you have a modeal on the webpage you want to install this calculator on, either your modal or the calculator’s modal may not work.
  7. Website developers can set a default currency sign and preferred date format by setting <op/sc>_currency and <op/sc>_date_mask respectively. Set one or both to an integer value. For the list of integers to support 90 plus currency symbols and 6 date format options, see the file currency_and_date_conventions.txt in the plugin’s root folder. (example: India, Indian Rupee: ₹1,23,45,678.99 = 83)

Enhanced Internationalization

New: Support for over 90 currency signs (using appropriate nummber formatting conventions) and 6 date formats (mm/dd/yyyy, dd/mm/yyyy, yyyy.mm.dd etc.). If neither the website developer or the user makes a selection, the calculator will read the browser’s default currency and date options and automatically use them. Without doing anything, a website visitor from Japan visiting a website hosted in France will initially see a floating yen sign. The website developer can easily override this default behavior by setting either shortcodes or function options. The user (if the website designer keeps the feature enabled) can override both and select a currency and date format.

To summarize, the plugin determines what currency symbol (and date format) to use by applying the following rules:

  1. If a website allows a user to select a symbol, and the user makes a selection, the plugin uses the visitor’s choice first.
  2. Otherwise, if a user has not made a selection, and the website owner has set a default currency (i.e., currency does not equal 999), the calculator uses the website’s selection.
  3. Otherwise, the calculator plugin will attempt to read the browser’s currency default and pick a currency symbol.
  4. Otherwise, the plugin defaults to using the ‘$’ symbol.


  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 – completed v.1.4.0
  3. Give website owners the ability to not let their visitors change the default date format or currency – completed v.1.3.0

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