Calculated Fields Form – AI Form Builder for WordPress – Contact, Payment, Quote, Quiz & More vs Contact Form Clean and Simple

Calculated Fields Form is a full-featured WordPress form builder plugin. It lets you create any type of form — from simple contact forms to complex multi-step booking systems, quote generators, order forms, and payment forms — without writing a single line of code. Its standout capability is real-time dynamic calculations: form fields can automatically compute results (totals, prices, dates, distances, scores) based on values entered by the user. This makes it the ideal choice whenever a form needs to respond intelligently to user input. Is Calculated Fields Form only for forms with calculations? No. Despite its name, Calculated Fields Form is a complete, general-purpose WordPress form builder suitable for any use case. The “calculated fields” refer to an advanced feature the plugin offers on top of all standard form capabilities. You can use it to build: Contact forms — simple name, email, and message forms Booking and reservation forms — with date pickers and availability logic Quote and estimate forms — with automatic price calculation Order forms — with dynamic product pricing Payment forms — integrated with PayPal, Stripe, and many other gateways Registration and sign-up forms — for events, services, or user accounts Survey and quiz forms — with conditional logic and scoring Lead generation forms — connected to Mailchimp, HubSpot, Salesforce, and more Mortgage and loan calculators — with financial operation modules Shipping and logistics forms — with distance and travel time calculations Why choose Calculated Fields Form over other WordPress form plugins? No recurring fees — all commercial versions are a one-time purchase with lifetime updates AI-powered form generator — describe what the form should do in plain language and the plugin builds the complete form structure for you AI Assistant inside the form builder — refine calculation equations, form design, generate lists of choices, and generate notification emails with natural-language prompts, directly in the equation editor and email settings AI-powered entries search — filter form submissions using natural language across the entries database, with semantic matching instead of simple text search AI agents via MCP (Model Context Protocol) — connect external AI agents such as Claude Code, OpenCode, and Codex to build new forms and generate submission reports directly from the agent’s interface 4.9/5 rating with over 960 verified reviews on WordPress.org 40,000+ active installations Compatible with all major page builders — Gutenberg, Elementor, Divi, Beaver Builder, WPBakery, SiteOrigin Extensive add-on ecosystem — payment gateways, CRM integrations, PDF generation, e-signatures, and more Real-time calculations — a capability that most other form plugins lack or offer only in expensive tiers Actively maintained — updated regularly with new features and compatibility fixes At the moment, the plugin supports multiple AI providers, including Anthropic Claude, OpenAI, Gemini, MiniMax, DeepSeek, Kimi, and any connector available through the WordPress AI Connector API exposed by WordPress 7.x. Or let the AI build the form from a plain-language description: The visual drag-and-drop form builder requires no developer knowledge. Available controls include: text fields, numbers, currency, date/time pickers, slider controls, email, radio buttons, checkboxes, container fields, multi-page controls, QR code readers, audio and video recording fields, calculated fields, and many others. All forms are fully mobile responsive. Features Core form builder features: Visual drag-and-drop form builder with an intuitive and interactive interface. General-purpose form controls: radio buttons, checkboxes, dropdown lists, date/time pickers, sliders, numeric fields, currency fields, email fields, text areas, and more. Calculated fields that automatically compute values based on other form fields. Insert as many calculated fields as needed. Advanced formula editor with syntax highlighting and real-time error detection. Conditional logic (dependency rules) to show, hide, enable, or disable fields based on user input — ideal for building guided wizards. Multi-page forms using page break controls between field groups. Field grouping inside container controls (Div, Fieldset, and Popups). Repeater container to duplicate rows of fields with row indexes and per-column totals, useful for orders, registrations, itemized lists, and any scenario where the same set of fields must be filled multiple times. Multi-column layout support for organized, professional-looking forms. Map location picker control powered by OpenStreetMap, supporting both an interactive map with draggable pin and a static map preview. Dozens of predefined form templates to use as starting points. Multiple design themes and templates. Email notifications sent to the site owner when a form is submitted. Optional Akismet integration to flag or discard spam submissions before they reach your inbox or the entries database. Form version history to recover previous versions. Form duplication to reuse existing work. Troubleshooting and optimization tools. Option to exclude forms from search indexing for improved site speed. Supported calculation types: Financial calculations: totals, taxes, discounts, interest rates, loan amortization. Date and time calculations: differences between dates, age calculations, booking duration. Mathematical operations: arithmetic, percentages, rounding, trigonometry, and complex functions. Text processing: string manipulation, concatenation, and formatting. Distance calculations: compute distances and travel times between locations using Google Maps. Chart generation: create charts dynamically from form data using Chart.js. External service calls: retrieve real-time data from third-party APIs within form equations. Page builder integrations: Calculated Fields Form integrates natively with all major WordPress page builders: Classic WordPress Editor Gutenberg (Block Editor) Elementor Page Builder by SiteOrigin Beaver Builder WPBakery Page Builder DIVI Builder For any other editor, use the shortcode to insert forms anywhere: [CP_CALCULATED_FIELDS_ID id="1"] Other features: Duplicate any form to reuse and adapt previous work. Built-in troubleshooting and performance optimization area. Disable forms from search indexing to improve website speed. Form version control to recover previous versions. Free vs. Commercial Versions The free version includes the complete visual form builder, notification emails to the site owner, basic calculation operations, conditional logic, design customization, multi-column layout, submission storage on the website for review, Math CAPTCHA for spam protection, Akismet integration for advanced spam filtering, AI-powered form generation with an integrated AI Assistant for equations and emails, AI-powered entries search, MCP integration for external AI agents such as Claude Code and OpenCode, a Repeater container for dynamic row-based data, and a Map location picker powered by OpenStreetMap. The commercial versions (Professional, Developer, and Platinum) add Math and Classic CAPTCHA options alongside the free Math CAPTCHA, payment gateway integration, confirmation emails to users, advanced data source controls, financial and distance operation modules, chart generation, CRM integrations, PDF generation, e-signatures, and more. All commercial versions are available as a one-time purchase with lifetime access to plugin updates. Visit https://cff.dwbooster.com/download for details. Professional version features: All features of the free version. Send confirmation emails to users with their submitted data. PayPal integration and Stripe integration — dynamically compute the charge amount using a calculated field. SCA (Strong Customer Authentication) compatible with PSD2 (EU Payment Services Directive). Import and export forms between WordPress sites. Form protection: Math and Classic CAPTCHA, WordPress nonces, and honeypot fields. “Thank You” page with a summary of the form submission. Dashboard widget showing the last week’s form submissions. Form caching to increase rendering speed. Export submissions to CSV for use in Excel, OpenOffice, LibreOffice, or any spreadsheet tool. Developer version features: All features of the free and Professional versions. Advanced controls connected to external data sources: databases, CSV files, WordPress posts, taxonomies, user data, and JSON objects. Financial operations module: interest, amortization, and other financial calculations. Date and time operations module: advanced date arithmetic and formatting. Distance and travel time module: powered by Google Maps. Chart.js operations module: generate dynamic charts from form data. Script to save form data to an external database. Add-ons included in the Developer version: Server-Side Equations add-on: Run equations on the server for better performance and security. Verification Code add-on: Email and phone verification with code input before form submission. WooCommerce add-on: Link forms to WooCommerce products to calculate prices, weight, and dimensions. SalesForce add-on: Sync form data with your Salesforce account. WebHooks add-on: Send form data to Webhook URLs; connect with Zapier, IFTTT, and more. User Permissions add-on: Restrict form access and let users manage their own submissions. User Registration Form add-on: Create user sign-up and registration forms. Platinum version features: All features of the free, Professional, and Developer versions. Extending features add-ons: CSV Generator add-on: Export form data to CSV files and attach them to notification emails. PDF Generator add-on: Create PDF documents from submitted form data and include them in emails. Signature add-on: Add e-signature fields — users can sign using a mouse or touchscreen. Unique Fields Values add-on: Ensure submitted values have not been used in previous submissions. iCal add-on: Send iCal attachments in emails for importing events into Google Calendar, Outlook, and more. Upload Files add-on: Save uploaded files to the WordPress media library and support additional file types. Payment gateway add-ons: PayPal Pro add-on: Accept credit card payments directly on your site without redirecting to PayPal. PayPal Checkout add-on: Integrates PayPal Checkout with support for additional payment methods. Revolut add-on: Accept payments through Revolut. Authorize.Net add-on: Accept payments through Authorize.Net. Stripe add-on: Accept payments using the Stripe payment gateway. Stripe Checkout add-on: Use Stripe Checkout for secure, form-based payments. Skrill Payments Integration add-on: Integrate with Skrill Moneybookers for payment processing. TargetPay (iDeal) add-on: Support payments via iDeal through TargetPay. Mollie (iDeal) add-on: Accept iDeal payments using Mollie. RedSys / Servired / Sermepa add-on: Enable credit card payments through Spanish bank gateways. PayTM add-on: Accept payments via cards, net banking, wallets, and EMI through PayTM. SagePay add-on: Accept secure payments using the SagePay gateway. Sage Payment add-on: Support SSL-based credit card and e-check payments via Sage. eWay add-on: Integrate with eWay for payments in Australia, New Zealand, Singapore, Hong Kong, and Malaysia. Payrexx complementary plugin: Connect forms to the Payrexx payment platform. Square Checkout complementary plugin: Accept all major cards worldwide using Square. Third-party service integrations: Google Places add-on: Enable address autocomplete using the Google Places API. Autocomplete Places add-on: Add address autocompletion via the Photon API. Google Analytics add-on: Track user actions in forms and report to Google Analytics. Dropbox Integration add-on: Move uploaded files automatically to your Dropbox account. WebMerge add-on: Generate PDFs or Office documents via FormStack using submitted form data. Sendinblue Contact add-on: Add or update contacts in Sendinblue from form submissions. PrintFriendly add-on: Create PDF files with PrintFriendly and attach them to notification emails. Mailchimp add-on: Add new subscribers to Mailchimp lists on form submission. Mautic add-on: Add or update contacts in Mautic. HubSpot add-on: Send collected form data to HubSpot CRM contacts. Twilio add-on: Send SMS messages automatically on form submission. ip2location add-on: Detect user location using the ip2location database. Third-party plugin integrations: WooCommerce add-on: Connect forms with WooCommerce to dynamically calculate product prices, sizes, and weight. Easy Digital Downloads add-on: Integrate with Easy Digital Downloads to dynamically calculate product prices. Emma add-on: Add new contacts to Emma email marketing lists. MailPoet add-on: Subscribe users to MailPoet (v2 and v3) mailing lists. AffiliateWP add-on: Connect forms with AffiliateWP for affiliate tracking. The Events Calendar add-on: Create events, venues, and more using submitted form data.= Equation and formula format for calculated fields = Calculated fields support any valid JavaScript expression or function. Below are examples of common formula patterns: Simple arithmetic: fieldname1 + fieldname2 fieldname1 * fieldname2 fieldname1 / fieldname2 fieldname1 - fieldname2 Multiple fields with grouping: fieldname1 * (fieldname2 + fieldname3) Rounding to two decimal places: PREC(fieldname2 / fieldname3, 2) Conditional logic inside a formula: (function () { if (100 < fieldname3) return fieldname1 + fieldname2; if (fieldname3 <= 100) return fieldname1 * fieldname2; })(); Complex formulas using the full function format: (function () { var result = 0; /* Your code here */ return result; })(); Operations and operators available in formulas One of Calculated Fields Form’s key strengths is that any valid JavaScript code can be used in formulas. The plugin also provides a wide library of built-in operations: Mathematical Operations and Operators Conditional Operations Date and Time Operations Health-Related Operations Energy-Related Operations Field Handling Operations Operations for Interacting with External Services Operations for Handling URLs and Query Strings Additional modules available in Developer and Platinum versions: Financial Operations Distance and Travel Time Operations Chart Generation Operations Passing external variables to form equations Use the [CP_CALCULATED_FIELDS_VAR] shortcode to create JavaScript variables from GET or POST parameters, SESSION variables, or COOKIES, and reference them inside form equations: [CP_CALCULATED_FIELDS_VAR name="varname"] Access the variable in a formula using: fieldname1 * cff_var.varname Full documentation: Variable Shortcode Reference Complementary Plugins Odoo Contacts, Google Sheets Integration, WhatsApp Button, Xero Contacts, Zoho Leads, Zoom.us Meetings Integration, Data Collector, WooCommerce Products and Variations Prices, Multilanguage Forms, Progress Bar, Upload Files Path, QR Code Generator, Database Queries, Draft Form Data, Email Validator, Reminder Emails, Rich Text Editor, Submissions Removal, Use Limit, Fields Synchronization, RegExp Validation, Autocomplete Fields, Measurement Units Converter, Create Posts, Currency Exchange, hCaptcha, and growing.

A clean and simple AJAX contact form with Google reCAPTCHA, flexible CSS framework support, spam filtering, and REST API support for headless WordPress implementations. Clean: all user inputs are stripped in order to avoid cross-site scripting (XSS) vulnerabilities. Simple: AJAX enabled validation and submission for immediate response and guidance for your users (can be switched off). Flexible Styling: Choose your CSS framework – Bootstrap (default), Theme Native (inherits your theme’s styles), or Minimal (semantic classes for complete custom styling). REST API Support: Enable headless WordPress implementations to submit forms via authenticated REST API endpoints. Accessible: Built with accessibility in mind – proper ARIA attributes, keyboard navigation, screen reader support, and WCAG AA compliant color contrast. This is a straightforward contact form for your WordPress site. There is very minimal set-up required. Simply install, activate, and then place the short code [cscf-contact-form] on your web page. A standard set of input boxes are provided, these include Email Address, Name, Message and a nice big ‘Send Message’ button. When your user has completed the form an email will be sent to you containing your user’s message. To reply simply click the ‘reply’ button on your email client. The email address used is the one you have set up in WordPress under ‘Settings’ -> ‘General’, so do check this is correct. To help prevent spam all data is scanned can be scanned with Fullworks Anti Spam Pro. For this to work you must have the Fullworks Anti Spam Pro Plugin installed and activated. Fullworks Anti Spam Pro will also log all your messages, categorized as spam or not, automatically. For added piece of mind this plugin also allows you to add a ‘reCAPTCHA’. This adds a picture of a couple of words to the bottom of the contact form. Your user must correctly type the words before the form can be submitted, and in so doing, prove that they are human. Why Choose This Plugin? Granted there are many plugins of this type in existence already. Why use this one in-particular? Here’s why: Minimal setup. Simply activate the plugin and place the shortcode [cscf-contact-form] on any post or page. Safe. All input entered by your user is stripped back to minimise as far as possible the likelihood of any malicious user attempting to inject a script into your website. If the Fullworks Anti Spam Pro plugin is activated all form data will be scanned for spam. You can turn on reCAPTCHA to avoid your form being abused by bots, however Fullworks Anti Spam Pro will do this without reCAPTCHA. Ajax enabled. You have the option to turn on AJAX (client-side) validation and submission which gives your users an immediate response when completing the form without having to wait for the page to refresh. The form can integrate seamlessly into your website. Turn off the plugin’s default css style sheet so that your theme’s style sheet can be used instead. Flexible CSS styling: Choose from Bootstrap, Modern (with dark mode), Theme Native, or Minimal styling modes to match your site’s design. This plugin will only link in its jQuery file where it’s needed, it will not impose itself on every page of your whole site! Works with the latest version of WordPress. Original plugin written by an experienced PHP programmer, Megan Nicholas, the code is rock solid, safe, and rigorously tested as standard practice. Headless WordPress ready. REST API support allows you to submit forms from decoupled frontends, mobile apps, or any external application with proper authentication. Hopefully this plugin will fulfil all your needs. PHP 8 Ready Tested on PHP 8.4 How to Use Unless you want to change messages or add reCAPTCHA to your contact form then this plugin will work out of the box without any additional setup. Important: Check that you have an email address set-up in your WordPress ‘Settings’->’General’ page. This is the address that the plugin will use to send the contents of the contact form. To add the contact form to your WordPress website simply place the shortcode [cscf-contact-form] on the post or page that you wish the form to appear on. If you have Jetpack plugin installed disable the contact form otherwise the wrong form might display. Additional Settings This plugin will work out of the box without any additional setup. You have the option to change the default messages that are displayed to your user and to add reCAPTCHA capabilities. Go to the settings screen for the contact form plugin. You will find a link to the setting screen against the entry of this plugin on the ‘Installed Plugins’ page. Here is a list of things that you can change Message: The message displayed to the user at the top of the contact form. Message Sent Heading: The message heading or title displayed to the user after the message has been sent. Message Sent Content: The message content or body displayed to the user after the message has been sent. CSS Framework: Choose how the form is styled: Bootstrap (Default): Uses Bootstrap CSS classes for full Bootstrap compatibility. Best for themes already using Bootstrap. Modern (Card style): A beautiful, opinionated modern design with card-style layout, large inputs, and CSS variables for easy customization. Includes automatic dark mode support. Theme Native: Uses minimal classes with WordPress’s wp-element-button for the submit button. The form inherits your theme’s native form styles. Minimal: Uses semantic CSS classes only (cscf-field, cscf-input, etc.) for complete custom styling control. Use this plugin’s default stylesheet: The plugin comes with a default style sheet to make the form look nice for your user. Untick this if you want to use your theme’s stylesheet instead. The default stylesheet will simply not be linked in. This option is most relevant when using the Bootstrap CSS framework. Use client side validation (Ajax): When ticked the contact form will be validated and submitted on the client giving your user instant feedback if they have filled the form in incorrectly. If you wish the form to be validated and submitted only to the server then untick this option. Use reCAPTCHA: Tick this option if you wish your form to have a reCAPTCHA box. ReCAPTCHA helps to avoid spam bots using your form by checking that the form filler is actually a real person. To use reCAPTCHA you will need to get a some special keys from google https://www.google.com/recaptcha/admin/create. Once you have your keys enter them into the Public key and Private key boxes reCAPTCHA Public Key: Enter the public key that you obtained from here. reCAPTCHA Private Key: Enter the private key that you obtained from here. reCAPTCHA Theme: Here you can change the reCAPTCHA box theme so that it fits with the style of your website. Recipient Emails: The email address where you would like all messages to be sent. This will default to the email address you have specified under ‘E-Mail Address’ in your WordPress General Settings. If you want your mail sent to a different address then enter it here. You may enter multiple email addresses by clicking the ‘+’ button. Confirm Email Address: Email confirmation is now optional. To force your user to re-type their email address tick ‘Confirm Email Address’. It is recommended that you leave this option on. If you turn this option off your user will only have to enter their email address once, but if they enter it incorrectly you will have no way of getting back to them! Email Subject: This is the email subject that will appear on all messages. If you would like to set it to something different then enter it here. Override ‘From’ Address: If you tick this and then fill in the ‘From Address:’ box then all email will be sent from the given address NOT from the email address given by the form filler. **Option to allow enquiry to email themselves a copy of the message. Contact consent: This option allows you to be GDPR compliant by adding a ‘Consent to contact’ check box at the bottom of the form. Enable REST API: Turn on REST API support to allow headless WordPress implementations to submit forms. Required User Capability: Set the minimum WordPress user capability required to use the REST API (default: edit_posts). REST API for Headless WordPress This plugin includes REST API support, making it perfect for headless WordPress implementations, mobile applications, and decoupled frontend frameworks like React, Vue.js, or Angular. Enabling REST API Go to the plugin settings page Find the “REST API Settings” section Check “Enable REST API” Set the required user capability (default: edit_posts) Save your settings API Endpoint POST /wp-json/cscf/v1/submit Authentication The REST API requires WordPress user authentication. Users must be logged in and have the capability specified in settings (default: edit_posts). For headless implementations, you can use: – Application Passwords (WordPress 5.6+) – JWT Authentication plugins – OAuth plugins – Basic Authentication (development only) Request Format Send a POST request with JSON body: `json { “name”: “John Doe”, “email”: “[email protected]”, “confirm_email”: “[email protected]”, “message”: “Your message here”, “phone_number”: “+1234567890”, “contact_consent”: true, “email_sender”: false, “post_id”: 123 } ` Required fields: – name: Sender’s name – email: Sender’s email address – message: The message content Optional fields: – confirm_email: Required if email confirmation is enabled in settings – phone_number: Required if phone number is set as mandatory in settings – contact_consent: Required if contact consent is enabled in settings – email_sender: Set to true to send a copy to the sender – post_id: The ID of the page/post where the form would normally be displayed Response Format Success Response (200): json { "success": true, "message": "Message Sent" } Validation Error Response (400): json { "code": "validation_failed", "message": "Validation failed.", "data": { "status": 400, "errors": { "email": "Please enter a valid email address.", "message": "Please enter a message." } } } Authentication Error Response (401): json { "code": "rest_forbidden", "message": "Authentication required.", "data": { "status": 401 } } Example Implementation JavaScript (fetch API): `javascript const formData = { name: “John Doe”, email: “[email protected]”, confirm_email: “[email protected]”, message: “This is a test message from the REST API” }; fetch(‘https://yoursite.com/wp-json/cscf/v1/submit’, { method: ‘POST’, headers: { ‘Content-Type’: ‘application/json’, ‘Authorization’: ‘Bearer YOUR_AUTH_TOKEN’ }, body: JSON.stringify(formData) }) .then(response => response.json()) .then(data => { if (data.success) { console.log(‘Message sent successfully!’); } else { console.error(‘Validation errors:’, data.data.errors); } }); ` Important Notes REST API is disabled by default for security reCAPTCHA is bypassed for REST API submissions (authentication provides security) All other form validations and spam filtering still apply Form submissions via REST API are processed identically to regular submissions Email notifications work the same way as standard form submissions Demo Demo site coming soon.