Offline conversions
Offline conversions are results that happen outside your website, such as a signed quote or a completed job, and that you feed back to your advertising platform. That way Google Ads knows which clicks really brought in customers.
- 3 min read
What are offline conversions?
An online Conversion is an action on your website, such as a submitted form. But for a trade business the most important thing happens afterwards, outside the website. The customer gets an advice meeting, a site measurement, a quote, and signs or does not. Those steps are what you call offline conversions.
With offline conversions you feed those steps back to Google Ads, or to Meta. For that you store a click ID with every enquiry, a unique code that Google attaches to every ad click. At Google it is called gclid, with variants such as gbraid and wbraid. If the enquiry later becomes a job, you send that code back with the result. Google then knows exactly which click led to a signed job.
Why offline conversions matter for your business
Without offline conversions Google only knows that someone filled in a form. Not whether it was a serious customer, a price comparer or a wrongly filled-in spam form. The system treats all enquiries as equal, and looks for more of the same.
With offline conversions that changes. You teach Google the difference between an enquiry that came to nothing and an enquiry that produced a job worth thousands of euros. A smart bidding strategy can then steer on signed jobs instead of forms. That is exactly what it is all about: not more enquiries, but more work that fits.
How offline conversions work
The process has three steps. First you capture the click ID with every enquiry, together with the contact details. You do that with a hidden field in your form that reads the gclid from the URL. Then you put those details in your CRM, so they stay with the lead. Finally, when the status of a lead changes, you send that change back to Google Ads. That can be done with an upload or automatically via a link.
An example. Say a roof renovation business gets a good number of enquiries through Google Ads every month. Some of them are about small repairs that the business actually does not want to do. In Google Ads all the enquiries look the same. The business puts a hidden field in the form, lets the click IDs flow into the CRM and marks per lead whether a site measurement took place and whether the quote was signed. Those statuses go back to Google Ads automatically every day, with a value per step.
After a learning period the business notices the campaigns shifting. Slightly fewer enquiries come in for small jobs and more for complete renovations. The cost per lead rise slightly, but the cost per signed job falls.
With enhanced conversions for leads it goes a step further. Besides the click ID you also send encrypted contact details, so Google can match conversions even when the click ID is missing.
Common mistakes with offline conversions
Not capturing the click ID. Without a gclid in your form and CRM there is nothing to link. This is the most common reason offline conversions do not work. So check every form on your site, not just the main form.
Uploading too late. Google accepts conversions for a set period after the click. With long sales cycles, it can make sense to pass on intermediate steps too, such as a site visit or a quote that has been sent.
Only sending the final step. If you only report a signed job after months, Google gets few signals. Intermediate steps help the system learn faster.
Not keeping the CRM up to date. An integration is only as good as the data in it. If the status of leads isn't updated, the integration sends nothing back.
Forgetting consent. Here too, you may only use data if the visitor has given consent. Set up consent mode properly.
How to tackle offline conversions
Start with the basics. Make sure every form on your website captures the click ID and passes it on, and that phone calls are logged with a source. Test this by clicking on one of your own ads.
Then record in your CRM which steps you want to measure, such as appointment booked, quote sent and job signed. Give each step a value that matches what it brings you.
Next, set up an integration that sends those steps back to Google Ads automatically. Set them as a secondary conversion first, so you can check that the data is right. Only make them the primary goal in your bidding strategy once you're sure the figures are reliable.
This is exactly the work we do at conversion tracking: measuring down to the quote, so your campaigns steer towards signed jobs.
Frequently asked questions
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What do I need for offline conversions?
A form that captures Google’s click ID, a CRM in which you track the status of every lead and a link or upload to Google Ads. You also need your conversion measurement and consent set up properly. With that basis you can feed signed jobs back.
What is a gclid?
A gclid is a unique code that Google adds to every click on an ad. By storing that code with an enquiry, you can later tell Google which click led to a customer. Variants are gbraid and wbraid, which are used on some devices.
Do offline conversions also work for Meta?
Yes. Meta has a comparable feature via the Conversions API, with which you send results from your CRM back. There too the system learns which leads are valuable, so it can show your ads to similar people.
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