Contact Form 7 + Google Ads Conversion Tracking Setup

Contact Form 7 is deceptively simple until you need to track submissions in Google Ads. I’ve audited probably 80+ WordPress sites using CF7, and about 60% of them are either not tracking conversions at all or tracking them wrong. The main culprit? CF7 only fires a DOM event — no native integration with tracking platforms, and definitely no built-in Enhanced Conversions support.

Most people try to track the form submission by watching for page redirects or thank-you pages, but CF7 doesn’t redirect by default. It just shows a success message on the same page. Miss the wpcf7mailsent event, and you miss every conversion.

What You’ll Have Working By The End

Prerequisites

Step 1: Create the Google Ads Conversion Action

First, set up the conversion action in Google Ads before configuring the tracking.

In Google Ads, go to Goals → Conversions → + New conversion action:

  1. Select Website as the conversion source
  2. Goal and action optimization: Choose “Submit lead form”
  3. Conversion name: Something descriptive like “Contact Form Submission”
  4. Value: Set to “Don’t use a value” unless you assign dollar values to leads
  5. Count: Select “One” (crucial for lead forms — you don’t want multiple conversions per user)
  6. Attribution model: Use “Data-driven” if available, otherwise “Last click”
  7. View-through conversion window: 30 days is fine for most B2B, 7 days for e-commerce

Click Create and continue. You’ll get two critical pieces of info:

Keep these handy — you’ll need them in GTM.

Step 2: Set Up the Data Layer Push

Contact Form 7 fires a wpcf7mailsent DOM event when forms submit successfully. We need to catch this event and push the data to GTM’s data layer.

Add this code to your WordPress theme’s functions.php file or in a custom plugin:

// Add to footer on pages with Contact Form 7
add_action('wp_footer', 'cf7_gtm_tracking');
function cf7_gtm_tracking() {
    if (function_exists('wpcf7_contact_form_tag_type')) {
        ?>
        <script>
        document.addEventListener('wpcf7mailsent', function(event) {
            // Get form data for Enhanced Conversions
            var formData = new FormData(event.target);
            var email = formData.get('your-email') || formData.get('email') || '';
            var firstName = formData.get('your-name') || formData.get('first-name') || '';
            var lastName = formData.get('your-last-name') || formData.get('last-name') || '';
            var phone = formData.get('your-phone') || formData.get('phone') || '';
            
            // Split full name if using single name field
            if (firstName && !lastName && firstName.includes(' ')) {
                var nameParts = firstName.split(' ');
                firstName = nameParts[0];
                lastName = nameParts.slice(1).join(' ');
            }
            
            // Push to data layer
            window.dataLayer = window.dataLayer || [];
            window.dataLayer.push({
                'event': 'cf7_form_submit',
                'form_id': event.detail.contactFormId,
                'user_data': {
                    'email_address': email,
                    'phone_number': phone,
                    'address': {
                        'first_name': firstName,
                        'last_name': lastName
                    }
                }
            });
            
            console.log('CF7 form submitted - conversion tracked');
        });
        </script>
        <?php
    }
}

Important: Update the field names (your-email, your-name, etc.) to match your actual Contact Form 7 field names. These are defined in your form’s shortcode.

Step 3: Create the GTM Trigger

In Google Tag Manager:

  1. Go to Triggers → New
  2. Trigger Type: Custom Event
  3. Event name: cf7_form_submit
  4. This trigger fires on: All Custom Events (or configure specific form IDs if you have multiple forms)

Name it something like “CF7 - Form Submission” and save.

Step 4: Configure the Google Ads Conversion Tag

Create the conversion tracking tag in GTM:

  1. Go to Tags → New
  2. Tag Type: Google Ads Conversion Tracking
  3. Conversion ID: Enter your AW-123456789 from Step 1
  4. Conversion Label: Enter your conversion label from Step 1
  5. Conversion Value: Leave blank (we set this in the conversion action)

Enhanced Conversions Setup (this is crucial):

  1. Check Enable Enhanced Conversions
  2. Data Source: Data Layer
  3. User-provided data: Configure the following mappings:
    • Email: {{DLV - user_data.email_address}}
    • Phone: {{DLV - user_data.phone_number}}
    • First Name: {{DLV - user_data.address.first_name}}
    • Last Name: {{DLV - user_data.address.last_name}}

You’ll need to create Data Layer Variables for each of these. In Variables → User-Defined Variables:

Email Variable:

Phone Variable:

First Name Variable:

Last Name Variable:

Set the Firing Trigger to your “CF7 - Form Submission” trigger from Step 3.

Step 5: Test and Publish

Before going live, test everything in GTM’s Preview mode:

  1. Click Preview in GTM
  2. Navigate to a page with your Contact Form 7 form
  3. Fill out and submit the form
  4. In the GTM preview panel, verify:
    • The cf7_form_submit event fires
    • The Google Ads Conversion tag fires
    • The data layer contains the user data fields
    • No errors in the console

If everything looks good, Submit and Publish your GTM container.

Testing & Verification

Real-Time Testing

After publishing, submit a test form and verify:

  1. Browser Console: You should see “CF7 form submitted - conversion tracked”
  2. GTM Debug: Install Google Tag Assistant and verify the conversion tag fires
  3. Google Ads: Go to Tools & Settings → Measurement → Conversions. Click on your conversion action and check the Recent conversions tab — test conversions should appear within 10-15 minutes

Production Verification

After 24-48 hours of live traffic:

  1. Google Ads Conversion Count: Check the conversions column in your campaigns
  2. Enhanced Conversions Status: In the conversion action settings, verify “Enhanced conversions” shows “Eligible” (not “Not eligible” or “No recent conversions”)
  3. Cross-Reference: If you have Flamingo installed, compare Google Ads conversion count to Flamingo entries. Acceptable variance is 5-15% (some users block JavaScript, some bot submissions get filtered out by Google)

Red Flags

Troubleshooting

Problem: Conversions not showing up in Google Ads after 24 hours Check the browser console when submitting forms. If you don’t see the “CF7 form submitted” message, the DOM event listener isn’t firing. Verify Contact Form 7 is properly installed and the form is actually using CF7 (not another form plugin). Also check that your GTM container is published, not just saved as a draft.

Problem: Enhanced Conversions showing “Not eligible”
The user data isn’t reaching Google Ads. Check your Data Layer Variables in GTM Preview mode — if they’re showing “undefined”, your field names in the JavaScript don’t match your CF7 form fields. Update the field names in the code to match exactly what’s in your Contact Form 7 shortcode (like [text* your-name]).

Problem: Getting duplicate conversions on single form submissions This usually happens if you have multiple tracking scripts or if the form is embedded multiple times on the page. Check for duplicate GTM containers or other Google Ads tracking scripts. Also ensure your conversion action counting is set to “One” not “Every”.

Problem: Conversions firing on form errors or validation failures The wpcf7mailsent event only fires on successful submissions, but if you’re seeing conversions on failed submissions, you might be tracking the wrong event. Double-check that your trigger is set to cf7_form_submit (our custom event) not generic form events.

Problem: Conversion count way higher than actual form submissions Check if your GTM trigger is firing on multiple events. Go to GTM Preview and submit a form — the trigger should fire exactly once. If it’s firing multiple times, you might have the trigger set to “All Custom Events” and picking up other events. Restrict it to only the cf7_form_submit event.

Problem: Phone number formatting causing Enhanced Conversions issues Google Ads Enhanced Conversions expects phone numbers in E.164 format (+1234567890). If users enter phone numbers with spaces, dashes, or without country codes, add formatting in your JavaScript. Use a library like libphonenumber-js or simple regex to clean the phone number before pushing to the data layer.

What To Do Next

Now that your Contact Form 7 conversions are tracking in Google Ads, consider these next steps:

This guide is part of the Google Ads Conversion Tracking hub — comprehensive guides for tracking any lead source as Google Ads conversions.