Calculated Fields Form


Absolutely! The “Calculated Fields Form” plugin opens up a world of possibilities. Here’s a breakdown of what you can achieve:

Financial Calculations: Design forms that automatically compute totals, taxes, discounts, and other financial metrics.

Booking Forms: Seamlessly handle date operations, availability checks, and booking calculations.

Product Pricing: Dynamically calculate product prices based on user inputs or predefined rules.

Math Operations: Perform basic arithmetic, percentages, and complex mathematical functions.

Text Processing: Manipulate text fields, concatenate strings, and format data.

Date Operations: Handle date differences, age calculations, and time-related tasks.

Advanced Operations:

Distance Calculations: Compute distances between locations.

Chart Generation: Create charts dynamically based on form data.

Third-Party Service Integration: Call external APIs or services for real-time data retrieval.

And the best part? All resulting forms are mobile responsive, ensuring a seamless experience across devices.

The most remarkable aspect is that you don’t need to hire a developer to create forms. With basic knowledge, you can have professional forms in minutes.

The form builder is entirely visual, offering a wide selection of controls (Text fields, Numbers, Currency, Date/time, Slider control, Email, Radio buttons, Checkboxes, Container fields, Multi-page control, QR code reader, Recording, Calculated fields, and many others). This versatile toolkit empowers you to create customized forms effortlessly.


Main features:

  • Visual form builder with an intuitive and interactive interface.
  • Includes general-purpose controls such as radio buttons, checkboxes, menu lists, date fields, slider controls, numeric fields, text currency fields, etc.
  • Includes calculated fields whose values result from operations involving other form fields.
    Insert as many calculated fields in the form as you need.
  • Contains an advanced formula editor associated with the calculated fields with syntax highlighting and error detection.
  • Features many operations modules: mathematical operations, operations with dates, financial operations, distance operations, text management, operations for calling remote services, etc. The calculated fields can identify numbers and prices within the values of the fields.
  • Send notification emails with the data collected by the form.
  • Distributed with several predefined forms that you can use as a starting point for your projects.
  • Includes several design templates.
  • Supports multi-pages forms by inserting page break controls between fields belonging to different pages.
  • Possible to define dependency rules between fields in the form, which is very useful in the design of wizards.
  • Allows the grouping of fields inside container controls (Div, Fieldset, and Popups).
  • Enables formatting the form into columns for a more organized layout.

The “Calculated Fields Form” plugin includes integration with popular page builders:

  • Classic WordPress Editor
  • Gutenberg Editor
  • Elementor
  • Page Builder by SiteOrigin
  • Beaver Builder
  • WPBakery Page Builder
  • DIVI Builder

For other editors, it is possible to insert the form into the pages via its shortcode. Each web form has an associated shortcode that allows you to insert it wherever you want.


Other features:

  • From the plugin configuration page, it is possible to duplicate a form by pressing the “Duplicate” button associated with it. By dupplicating a form, you can reuse the work already done.
  • Includes a troubleshooting and optimization area.
  • Allows you to disable forms in the indexing process to improve the speed of the website.
  • Includes a version control in the forms to recover previous versions.

Predefined forms:

“Calculated Fields Form” is distributed with five predefined sample forms.

  1. Simple Calculator Operations
  2. Calculation with Dates (bookings with check-in and check-out dates)
  3. Ideal Weight Calculator
  4. Pregnancy Calculator
  5. Lease Calculator

You can duplicate a sample form to implement your project, or create a new form from scratch.

Calculated Fields Form Commercial
The free version of the “Calculated Fields Form” plugin includes only basic functionality. Other distributions (Professional, Developer, and Platinum) are available with advanced functionalities, such as sending notification emails, integration with payment gateways and external services, controls for database’s connection (and connection to other data sources), complex operations, and many other features. The commercial plugin versions are one-time purchase with lifetime access to plugin updates ( )

Features of the Professional version:

The commercial plugin versions are one-time purchase with lifetime access to plugin updates ( )

  • Includes all the features of the free version of the plugin.
  • Submit the data collected by the forms and store it on the website for review.
  • Send confirmation emails to the users with the data collected by the form.
  • Integrate the form with PayPal and calculate the amount to be charged through a calculated field.
    Payments allow SCA (strong customer authentication), compatible with the new payment services (PSD 2) – Directive (EU).
  • Export and import forms between different WordPress sites.
  • Different mechanisms to protect forms, such as captcha, WordPress nonces, and honeypot fields.
  • Associate “Thank You” page with the form, where you can show a summary of the form’s submission.
  • Dashboard widget to show the last week’s submissions.
  • Cache the forms to increase the rendering speed.
  • Export the information submitted by the forms to a CSV file and use it with third-party tools such as Excel, OpenOffice, LibreOffice, or any other spreadsheet editor.

Features of the Developer version:

Includes add-ons to extend the form features and make use of third-party plugins and external services

  • Server-Side Equations add-on: define server-side equations.
  • Verification Code add-on: verifies the user’s email by sending him a verification code and blocking the form’s submission until the verification code is entered.
  • WooCommerce add-on: integrate forms with WooCommerce products and calculate their prices, dimensions, and weight at the runtime.
  • SalesForce add-on: integrate the form with the SalesForce service.
  • WebHooks add-on: send the information collected by the form to a WebHook URL to open countless possibilities. By connecting your form to services such as Zapier, Microsoft Flow, IFTTT, Workato, and others, you can connect to hundreds of third-party services (e.g. Zoho CRM, Dropbox, Mailchimp, Google Drive, Facebook, Twitter, etc.).
  • User Permissions add-on: control the forms’ access, as well as allowing users to access and edit their data.
  • User Registration Form add-on: build a user registration form that captures the user’s basic information and metadata.
  • reCAPTCHA add-on: replace the basic captcha with Google reCAPTCHA to protect the forms.

Features of the Platinum version:

  • Includes all the features of free, Professional, and Developer versions of the plugin.

Extending features add-ons

  • CSV Generator add-on: export the information collected by the form to CSV files and attach these to the notification emails.
  • PDF Generator add-on: generate PDF files with the information collected by the forms and attach them to the notification emails.
  • Signature add-on: convert form fields into “Signature” fields, allowing the users to sign the form with a mouse or touchscreen.
  • Unique Fields Values add-on: verifies that the values entered by users have not been used in previous submissions.
  • iCal add-on: send iCal file in the notification emails to import the events into most popular calendars like Outlook and Google Calendar.
  • Upload Files add-on: add uploaded files to the media library and extend the file types accepted by WordPress.

Payment Gateways add-ons

  • PayPal Pro add-on: enable the payer’s credit card details to be entered directly through the website without any redirection to the PayPal website.
  • PayPal Checkout add-on: enable PayPal Checkout integration. Supports more payment methods than PayPal Standard.
  • Authorize.Net add-on: accept payments via Authorize.Net from the form.
  • Stripe add-on: accept payments via the Stripe payment gateway from the form.
  • Skrill Payments Integration add-on: integrate with the Skrill Moneybookers payment gateway.
  • TargetPay (iDeal) add-on add-on: integrate with iDeal, the popular Dutch payment method.
  • Mollie (iDeal) add-on: accept payments via iDeal.
  • RedSys / Servired / Sermepa add-on provides: a secure interface for accepting credit card payments from most banks in Spain.
  • PayTM add-on: a secure interface for accepting payments with credit cards, debit cards, net banking, wallets, and EMI.
  • SagePay add-on: a secure interface for accepting payments via SagePay.
  • Sage Payment add-on: a secure interface for accepting payments through a secure SSL checkout system for both bankcard and virtual check transactions.
  • eWay add-on: integrate with eWay payment gateway. eWay is a popular payment gateway in countries like Australia, New Zealand, Singapore, Hong Kong, and Malaysia.

Integration with third-party services add-ons

  • Google Places add-on: transform form fields into autocomplete address fields.
  • Autocomplete Places add-on: transform form fields into autocomplete address fields by using the Photon API.
  • Google Analytics add-on: generate usage reports in “Google Analytics” for the users’ actions.
  • DropBox Integration add-on: copy or move the uploaded files to a DropBox account.
  • WebMerge add-on: integrate the forms with FormStack documents (formerly WebMerge) to generate PDF and Office documents at runtime with the information collected by the web forms.
  • Sendinblue Contact add-on: integrate the forms with Sendinblue to add/update contacts with the information collected by the web forms.
  • PrintFriendly add-on: generate PDF files with the PrintFriendly API and attach the resulting files to the notification emails.
  • Mailchimp add-on: add new members to the MailChimp account.
  • Mautic add-on: add new contacts (or update existing ones) into the Mautic Service.
  • HubSpot add-on: add/update contacts in HubSpot, using the information collected by the form.
  • Twilio add-on: send notification messages (SMS) in the forms’ submissions.
  • ip2location add-on: identify the users’ data using the ip2location databases.

Integration with third-party plugins add-ons

  • Easy Digital Downloads add-on: integrate the forms into Easy Digital Downloads products and calculate their prices at the runtime.
  • Emma add-on: add new members to the Emma service.
  • MailPoet add-on: add new subscribers to MailPoet’s Mailing Lists (MailPoet versions 2 and 3).
  • AffiliateWP add-on: integrate the forms with the AffiliateWP plugin.
  • The Events Calendar add-on: creates new events, venues, categories, tags, and organizers in The Events Calendar plugin with the information collected by the form.= Equation / Formula format for calculated fields =

Below, some possible formulas are included as examples, but the possibilities are endless.

  • With simple mathematical operations:

    fieldname1 + fieldname2
    fieldname1 * fieldname2
    fieldname1 / fieldname2
    fieldname1 - fieldname2
    fieldname1 - fieldname2
  • With mathematical operations involving multiple fields and grouped fields:

    fieldname1 * (fieldname2 + fieldname3)
  • With rounding operations. Round the result to two decimal places:

    PREC(fieldname2 / fieldname3, 2)
  • There are infinite number of formulas that can be created using complex structures. For example, the following formula includes conditional statements:

    (function () {
    if (100 < fieldname3) return fieldname1 + fieldname2;
    if (fieldname3 <= 100) return fieldname1 * fieldname2;
  • For complex formulas/equations you must use the function format with return statement to return the result to the calculated field:

     (function () {
        var result = 0;
        /* Your code here */
        return result;
    }) ();

Operations and operators to use in equations/formulas

One of the “Calculated Fields Form” strengths is the ability to use any valid JavaScript code to implement the equations/formulas.

However, the plugin includes a wide variety of operations and operators to simplify the development process.

Mathematical Operations and Operators

Conditional Operations

Field Handling Operations

Operations for interacting with external services

Operations for handling URLs and query strings

In addition to the operation modules listed above, the Developer and Platinum versions of the plugin include additional modules:

Date Time Operations

Financial Operations

Distance and Travel Time Operations

Operations to generate charts

Create variables from parameters received by “GET” or “POST”, “SESSION” variables, or “COOKIES” to use in the equations

The plugin includes the shortcode [CP_CALCULATED_FIELDS_VAR] to generate JavaScript variables from parameters received by “GET” or “POST”, “SESSION” variables, or “COOKIES”:


In the shortcode, you must replace the “…” symbols with the name of the parameter or variable. The variables are created as properties of the cff_var variable. For example, in the [CP_CALCULATED_FIELDS_VAR name=”my_var”] shortcode, you can access the variable value from the equations by using cff_var[‘my_var’], or cff_var.my_var

For example:


You can use the variables generated through the shortcode [CP_CALCULATED_FIELDS_VAR] in the formulas of the calculated fields: fieldname1*cff_var.varname

The complete list of parameters accepted by the variables shortcode is available at the following link: CLICK HERE


  • Calculated forms list
  • Inserting the form using the Classic Editor
  • Inserting the form using the Gutenberg Editor
  • Inserting the form using Elementor
  • Inserting the form using Page Builder by SiteOrigin
  • Inserting the form using Beaver Builder
  • Inserting the form using WPBakery Page Builder
  • Sample calculated form
  • Calculated field settings
  • Advanced equations editor
  • Calculator Form builder
  • Editing general fields
  • Available designs
  • Add-ons section
  • WooCommerce add-on
  • SalesForce add-on
  • WebHook add-on, and its integration with Zapier


This plugin provides 2 blocks.

  • Insert CFF
  • Create var from POST, GET, SESSION, or COOKIES


To install the “Calculated Fields Form” plugin, please follow these steps:

  1. Download the .zip the Calculated Fields Form plugin.
  2. Go to the Plugins section on your WordPress.
  3. Press the “Add New” button at the top of the section.
  4. Press the “Upload Plugin” button and then select the zipped file downloaded in the first step.
  5. Finally, install and activate the plugin.

To build a form, go to the menu option “Calculated Fields Form”

To insert the calculated / contact form into some content or post, use the corresponding form’s shortcode. Each web form has associated a shortcode.


Q: What controls are included in the plugin?

A: The Calculated Fields Form’s page contains detailed information about each field in the plugin: Click Here

Q: Where can I publish a calculated fields form?

A: You can publish the forms into pages and posts. The shortcode can be also placed into the theme templates. Read more

Q: Can I send the form data and calculated results to the user by email?

A: This feature is included in the commercial versions of the plugin.

The commercial versions of the plugin allow processing the forms’ submissions, send notification emails, and integrate the forms with payment gateways. Comparing the different versions of the plugin

Q: Which are the operations with date values that the plugin allows?

A: List and description of date/time operations

Q: Are there financial operations included in the plugin?

A: List and description of financial operations

Q: How to populate the form fields with URL parameters?

A: Please, read the answer in the FAQ entry: Click Here

Q: How to change the language on the datepicker?

A: There are different alternatives, directly through the form’s structure or uploading a new file to the plugin’s folder. Please, visit the following link to read the instructions: Click Here

Q: How to create relationships between date fields?

A: It is possible to define the min date, max date, or select a date dynamically based on the value of another date field.

Create relationships between date fields

Q: Is there a way to format the form in a table structure (various fields in the same line)?

A: Yes, that’s possible. Please, read the following post in the plugin’s blog: Formatting the form (distributing the fields in columns)

Q: How to display an image in a checkbox or radio button?

A: Displaying images in checkboxes and radio buttons

Additionally, to hide the checkboxes and radio buttons, for using only the images for choosing, enter the following styles definition into the “Customize Form Design” attribute in the “Form Settigns” tab:

fbuilder input[type=”checkbox”]{display:none !important;}

Q: In which order does the plugin evaluate the equations associated with the calculated fields?

A: Evaluating the equations

Q: Can I charge the user the calculated price?

A: That feature is available in the commercial versions of the plugin.

Additional details in the “PayPal Payment Configuration” section in the documentation page of the plugin.

Q: Non-Latin characters are not displayed in the form. Is there a solution?

A: Please, read the following entry in the plugin’s FAQ: [Click Here]]( “utf-8”)

Q: The calculated form doesn’t appear on the public website. What is the solution?

A: Please inset the shortcode with the iframe attribute: [CP_CALCULATED_FIELDS id="1" iframe="1"]

Q: How to create a multipage form?

A: Insert “Page Break” between the fields belonging to different pages.

Q: How to display a summary of entered data in the form?

A: Insert a summary control in the form, and enter the names of the fields to display in the summary through its settings.

Q: Can I display a summary of the fields on the “Thank You” page?

A: Yes, that’s possible by using the shortcode for results. Additional details HERE

Q: How can I apply CSS styles to the form fields?

A: Applying CSS styles to the form fields

Q: How to create a new template to use with my forms?

A: Creating new templates

Q: What files can be uploaded through the form?

A: Accepted files

Q: How can I include the links to the uploaded files in the notification emails?

A: Inserting the links to the uploaded files into the notification emails

Q: How to use conditional statements in the equations?

A: There are different alternatives to use conditional statements in the equations: Visit the following link

Q: My company has different departments (like the sales department, the support group, etc.). Can I send a notification email to every department when the form is submitted?

A: Yes, that is possible. You must enter the emails’ addresses separated by the comma through the “Destination emails” attribute in the form’s settings.

Q: How to send only specific fields in the notification emails?

A: The notification emails can include all fields submitted by the form (<%INFO%>), or specific fields by using their tags(<%fieldname#%>). Furthermore, there are other tags you can include in the notification emails.

Please, visit the following link to get the complete list of tags to include in the email: Accepted tags

Q: How to implement custom operations?

A: Please, read the answer in the FAQ page of the plugin: Click Here

Q: How to define dependencies between fields in the form?

A: Please, read the following post in the plugin’s blog: Click Here

Q: How to select a choice in a dropdown field, or radio button, based on a calculated value?

A: I’ll try to describe the process with some hypothetical examples. Assuming the radio button field is fieldname123, and you can select the choice with the value 5, uses the following piece of code as part of the equation associated with the calculated field:


But if the fieldname123 is a checkbox field and you want to select the choices with values: 5 and 8, the code would be:


Q: How to set the value of a slider control programmatically?

A: Please, read the answer in the plugin’s documentation:
Click Here

Q: How do I integrate forms with WooCommerce products?

Integrating the forms with WooCommerce products

Q: How to generate a PDF file dynamically with the submitted information?

A: There are multiple alternatives, by using the PDF generator add-on, the PrintFriendly add-on or the WebMerge add-on.


23 ខែ​កក្កដា, 2024 1 reply
I searched everywhere for a calculation plugin that I can use off the bat and with no gate kept features. This plugin is amazing on the free version and the support is astoundingly good. Cannot fault them at all in all aspects. Will upgrade to the commercial version as soon as we can!
11 ខែ​កក្កដា, 2024 1 reply
The plugin has helped me very well in a few projects, in case of problems the helpdesk helps very quickly.
9 ខែ​កក្កដា, 2024 1 reply
I have been using this plugin for two years now – mostly for event registration purposes, but also for polls. I love it! 😀 It can handle a wide variety of complex logic, and the developers are very actively working on expanding its capabilities with new connections, for example recently to Google sheets, which is very important for my workflow. I also hugely prefer the one-time-payments to the subscription model which other wordpress form builders use.
24 ខែ​មិថុនា, 2024 1 reply
Thank you! Very nice plugin!
24 ខែ​មិថុនា, 2024 1 reply
Simple to use plugin with sophisticated features to match most business needs. I highly recommend them.
13 ខែ​មិថុនា, 2024 1 reply
The flexibility of this plugin is amazing. I keep finding new uses and if I get in a jam the documentation is excellent and the support is even better. I wish all plugin creators had the same standards this company has.
Read all 914 reviews

Contributors & Developers

“Calculated Fields Form” is open source software. The following people have contributed to this plugin.


“Calculated Fields Form” has been translated into 6 locales. Thank you to the translators for their contributions.

Translate “Calculated Fields Form” into your language.

Interested in development?

Browse the code, check out the SVN repository, or subscribe to the development log by RSS.



  • Improves the user experience in creating forms by assigning placeholders to the form attributes.
  • Implements a fields filtering box in the fields list popup windows to facilitate searching the fields in the form.


  • Fixes an issue with the CSS Editor associated with the Customize Form Design attribute.


  • Improve user experience with the forms builder by applying tooltips to the drag-and-drop handler and columns’ icons.
  • Includes Reply To attributes in the notification and confirmation email sessions to enter explicit reply-to email addresses.
  • Adds new form templates.


  • Identifies fields with col-… or column… class names assigned with a top-right icon.
  • Improves the admin appearance of data-table control.
  • Adds new form templates for storage requirements and booking.


  • Enhances the CSS edition.
  • Allows controlling the design of the DIV tags that contain the fields’ components.
  • Fixes a minor issue in the CSS rules applied to the form title and description.
  • Introduces new form templates for the Pay Raise Percent Calculator and Life Insurance Calculator.


  • Refines CSS styling for form titles and descriptions.
  • Introduces new form templates.
  • Enhances user interaction by displaying a cursor pointer for radio buttons and checkboxes.
  • Disables the link functionality when a form is embedded within an anchor.