Most disagreements about whether marketing works are really disagreements about measurement. The ads say one thing, the sales figures say another, and nobody can reconcile them. Conversion tracking is what closes that gap. It is not glamorous, and it is the most valuable hour of setup in the whole account.
What a conversion should be
A conversion is a real business outcome. For most local and service businesses that means one of four things:
- A phone call over a certain length.
- A completed enquiry form.
- A booking made or an appointment requested.
- A purchase, if you sell online.
It is not a page view, not a scroll, not a click on a menu item, and not someone spending thirty seconds on the site. Those get counted in a lot of accounts because they are easy to set up and they make the reports look busy. The problem is that the advertising platforms optimise towards whatever you tell them to count. Count the wrong thing and you will get more of the wrong thing, efficiently.
Tracking phone calls
For most trades and service businesses this is where the enquiries are, and it is the part most often missing.
Calls from the advert itself
If your adverts show a call button, the platform can record calls placed directly from them. This is usually the easiest tracking to switch on and it is often the first evidence that the ads are working better than the reports suggested.
Calls from your website
For these you need a forwarding number: the site shows a tracking number to the visitor, the call is passed straight through to your real phone, and the system records which visit produced it. Set a sensible minimum duration so wrong numbers and hang-ups do not count as enquiries.
Keeping your real number visible
Plenty of owners dislike showing a number that is not theirs. It is a fair concern. A reasonable compromise is to use a tracking number for paid traffic only, and keep your normal number everywhere else. Whatever you choose, be consistent across your website, your Google Business Profile and your directory listings, because mismatched numbers cause other problems.
Tracking forms
The reliable way to record a form is on the confirmation step: when the form has genuinely submitted, the site fires the conversion. Recording it on the button click instead counts failed submissions and people who clicked twice, which inflates everything.
Test it yourself. Submit the form, check the enquiry arrives in the inbox, then check the conversion appears in the reporting a few hours later. If either half is missing, nothing else in this article matters yet.
WhatsApp, email links and live chat
Any of these can be counted, and if that is how your customers actually get in touch, they should be. Just be careful not to double count: if one enquiry can trigger two conversions, your cost per enquiry will look half what it really is.
Not all conversions are equal
Once you have the basics working, the next step is telling the platform which enquiries were worth having. Not every form fill is a job. Once you can feed back which enquiries turned into quotes and which turned into work, the automated bidding starts buying more of the ones that turn into money rather than the ones that are simply easy to get.
This is what people mean by value-based or offline conversion tracking. It sounds advanced, but at its simplest it is a spreadsheet or a CRM export saying which enquiries became customers, sent back into the ad account on a schedule.
Consent and doing it properly
In the UK you need consent before setting the cookies that a lot of tracking relies on, which means a proper consent banner rather than a decorative one. Set it up so tracking waits for consent, and use the platforms' consent settings so measurement still works reasonably for people who decline. Get this right at the start: retrofitting it is more work than doing it correctly first time.
The five checks to run every quarter
- Submit your own form and place your own call, and confirm both appear as conversions.
- Check nothing is counted twice: one enquiry, one conversion.
- Check the conversion actions list for anything measuring activity rather than enquiries.
- Compare the number of conversions with the number of real enquiries you remember. They should be in the same neighbourhood.
- Check the consent banner is still working after any website change.
What good measurement feels like
When it is set up properly, you stop arguing about whether advertising works. You can say: last month we spent this much, we received this many enquiries, this many became quotes, and this many became jobs. That turns marketing from an act of faith into a decision you can make with numbers, and it makes every other change you try measurable, which is the real prize.