Last updated on August 20, 2025 by Formidable Team

How to Create a WordPress Calculator with Formidable Forms

Wondering how to create a WordPress calculator that actually drives results? Calculator forms are one of the most effective ways to provide value to your visitors while capturing leads and boosting engagement.

How to Create a WordPress Calculator with Formidable Forms

Approximate read time: 5 minutes

Ready to supercharge your WordPress site with powerful calculation capabilities? Today's online customers expect instant results โ€“ whether they're calculating shipping costs, getting price quotes, or determining loan payments. That's where WordPress calculator forms become absolute game-changers for your business!

With Formidable Forms, creating dynamic WordPress calculators has never been easier or more powerful. Whether you're running an eCommerce store, offering professional services, or managing complex pricing structures, our calculator feature transforms your website into an interactive powerhouse that converts visitors into customers.

From simple discount calculators to advanced quote generators, Formidable Forms gives you the tools to build exactly what your business needs. No coding required, no limits on complexity โ€“ just results that will wow your audience and streamline your operations.

What You Can Calculate with WordPress Forms

Before diving into the how-to, let's explore the possibilities. WordPress calculator forms can handle virtually any type of calculation your business needs:

Financial Calculators:

  • Mortgage rates and payments
  • Car loan payments
  • ROI calculations
  • Discount pricing

Business Tools:

  • Product prices and quotes
  • Shipping cost estimates
  • Service pricing calculators

Personal Calculators:

  • Body mass index
  • Pregnancy due dates
  • Estimated final grades
  • And much more

To start building custom calculator forms on your WordPress site, first install the Formidable Forms plugin and purchase the upgraded version in order to access more features for your forms. These premium features allow you to create customized, detailed forms.

Formidable Forms pro plans

Next, visit the Formidable Forms plugin dashboard. There, you can create a new form in the Forms Page or download one of our many pre-built calculator templates. The fields you need for your new form will all depend on the calculation you are trying to create.

Here are some tips on how to create a calculator of various types in WordPress with Formidable Forms:

Creating a Price Calculator

Shopping online is one of the most popular ways to buy products. For your eCommerce business to be successful, you need a user-friendly and mobile-friendly site. Adding a price calculator to your online shop can help customers predict what they will pay and have a more stress-free experience.

Follow these simple steps to create a price calculator using Formidable Forms:

  1. Start by creating a new form in Formidable Forms.
    Add a New Form Button in Formidable Forms
  2. Add a product field to display your available products or services.
  3. Customize your product field settings:
    • Choose your preferred product type optionProduct Field - Product Type Dropdown Options
    • Update the product information:
      • Left box: Enter the product name (what customers will see)
      • Right box: Enter the price for each product
        Formidable Forms Product Field - Field Options
  4. Add a quantity field and link it to your product field so customers can choose how many items they want.
    Formidable Forms Quantity Field - Field Options
  5. Add a total field to automatically calculate the final price based on products selected and quantities chosen.
  6. Connect your preferred payment methods and publish your form!

You can add this completed form to certain product pages or directly to your visitorโ€™s shopping cart.

If you are using a block editor to design your web pages, you can add a "Formidable Forms" block and select your price calculator form.

To create a quote calculator, you would use similar steps to allow a customer to estimate their total price for services before booking.

Creating a Mortgage Payment Calculator

Buying a home can be intimidating for even the most seasoned homeowners. Make it easy for them by providing a mortgage payment calculator on your site. This helps many consumers prepare for buying a house, because they are more knowledgeable about what to expect.

Formidable Forms - Mortgage Calculator Template

Follow these steps to add a mortgage calculator to your WordPress site:

  1. Create a new form in Formidable Forms.
    Add a New Form Button in Formidable Forms
  2. Select the Simple or Advanced Mortgage Calculator Template.
    Formidable Forms Form Templates - Mortgage Calculator Templates
  1. The simple template uses three fields (mortgage amount, interest rate, and loan term) to calculate a monthly mortgage rate.
  2. Adjust the name of any fields you need to customize your form, then publish.
  3. Embed this form on your onsite page(s) so that it is easily accessible by visitors.

This form serves as a valuable tool for your customers, simplifying complex calculations while enhancing your site's credibility and driving increased traffic and conversions.

Creating a Car Payment Calculator

Another great tool to add to your site is a car payment calculator. Like the mortgage calculator, this form helps many consumers make better decisions about a substantial life expense. This tool helps potential car owners calculate what they can afford for a monthly car payment.

Hereโ€™s how to add a car payment calculator to your site:

  1. Create a new form in Formidable Forms.
    Add a New Form Button in Formidable Forms
  2. Select the Car Payment Calculator Template.
    Formidable Forms - Car Payment Form Template
  3. Adjust the default fields, which include Price of Care, Sales Tax, Trade-in Value, Dealer Fees, Down Payment, and more.
  4. Publish your form, and embed it anywhere on your website.

If you are wondering how to add a custom calculator in WordPress, follow the steps above, then add the custom field option you need. In addition to these examples, there are also a number of calculator templates you can use on your site.

Formidable Forms makes advanced site building simple. Launch forms, directories, dashboards, and custom WordPress apps faster than ever before.

Get Started with Calculator Forms

Whether you need pricing tools, payment calculators, or custom quote generators, Formidable Forms has templates ready to use. Install the plugin, choose your template, and start providing instant value to your visitors.



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