What is Google Ads Call Tracking?

Google Ads call tracking is a type of conversion tracking. It is a free service that is part of Google Ads. It is great call tracking solutions because it can attribute the Google Campaign, Adgroup, Ad and keywords for creating the call.

Its main goal is to connect a phone call (an offline action) back to the specific Google Ad that caused it (an online action). It allows you to stop guessing and start knowing which parts of your advertising budget are making the phone ring.

What is Google Call Tracking

How Does It Work? The Google Forwarding Number

The core mechanism is the Google Forwarding Number (GFN). This is a unique, trackable phone number that Google provides and temporarily displays instead of your actual business number.
When a user calls the GFN, the call is automatically routed to your real business line. Meanwhile, Google logs the call details and attributes the action back to the specific ad interaction.

There are a few ways phone call conversions are measured:

Calls Directly from Ads (Call Assets/Call-Only Ads):

    • The GFN is embedded directly in your ad (e.g., as a call button on a mobile search ad).
    • When the user clicks or taps the number, the call is initiated, and Google registers a conversion.

Calls from Your Website (Dynamic Number Insertion – DNI):

    • This is more advanced. When a user clicks your ad and lands on your website, a small piece of code on your site dynamically swaps your regular phone number with a GFN.
    • This normally requires using Google Tag Manager or Manual insertion of scripting code onto the website
    • If the user calls this displayed GFN, Google knows they came from a specific ad, keyword, or campaign.

Click to Call – Website (no longer supported)

    • This used to count as a conversion type in Google Ads, but it is no longer an option
    • Click to Call can attract a lot of SPAM clicks, and therefore is an unreliable measurement for conversion tracking

Key Benefits of Google Ads Call Tracking

  • Optimized Bidding: By identifying the keywords that lead to high-quality, long-duration calls, you can bid more aggressively on those terms to get more of the calls that matter.
  • Accurate ROI Measurement: You can assign a monetary value to a phone call lead and see the true return on investment (ROI) for call-generating keywords and ads.
  • Budget Efficiency: You can quickly cut spending on ads and keywords that are not driving valuable calls, directing your budget to the best performers.
  • Better Customer Insights: Analyzing call data helps you understand the search terms and ads that lead to a real human conversation, which often indicates high purchase intent.

Sample: call tracking report

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Frequently Ask Questions 

What happens if someone calls the Google forwarding number, calls again later?

Calls will continue to reach the business for 60 days after the user’s first call. If the user calls again within that period, the 60-day window resets. Once a full 60 days pass without any calls, the number will no longer route to the business.

Does google ads DNI work for multiple phone numbers?

No. The free Google Ads DNI tool only supports tracking a single phone number per website. If you need to track multiple numbers across campaigns, ad groups, or traffic sources, you’ll need a third-party call tracking solution.

Netology recommends CallRail It integrates fully with Google Ads and is a Google Ads call tracking partner.

I have Google Analytics, why do I need Google Tag Manager?

Website GA4 Events

Google Analytics is designed to measure all events on a websites. There are normally thousands of events on most websites such as a menu click, or a screen scroll. So we need a system to “tag” and select the key events, and to go one step further, tag conversion events, Google Tag Manager (GTM) is that system.

However GTM, can be quite complex to configure it requires a mix of skills ranging from web development, javascript, analytics and Google Ads.