Guide
Which actions any business should track in Google Ads, and how to stop Google optimising for the wrong thing.
Short answer: a conversion is the action you decide is valuable, like a call, a form, a booking or a purchase. Google Ads only knows what "good" looks like if you tell it, so count the actions that turn into paying customers, not clicks or page views. Then make those actions the ones Google uses for bidding, and keep the rest for reporting only.
Google defines a conversion action as "a specific customer activity that is valuable to your business." The important word is you: Google says you choose what you identify as valuable, "like a purchase, sign-up, or phone call".
A click is not a conversion. A click is what you pay for. A conversion is what you wanted when you paid.
Google Ads can track several kinds of actions:
For most local businesses, the first two matter most. A restaurant wants table bookings and calls. A gym wants trial sign-ups. A home services company wants calls and quote requests. An online shop wants purchases.
The easiest things to count are often the least useful. Page views, time on site and button clicks tell you people showed up. They don't tell you anyone became a customer.
A simple test for every action you track: if this number doubled next month, would revenue go up? If yes, count it. If you're not sure, track it for information but don't let it steer your budget.
Examples (yours will depend on your business):
| Count it | Track it, but don't steer by it |
|---|---|
| Calls from ads that last long enough to be real | Visits to the contact page |
| Completed booking or quote forms | Clicks on the "Book" button |
| Purchases | Add to cart |
| Messages that ask about a specific service | Video views |
Google Ads lets you mark each conversion action as primary or secondary, and the difference matters:
So if "contact page visits" is set as primary, Google can learn to find people who visit your contact page, not people who call. Keep only your real money actions as primary.
Google says conversion tracking helps you learn "which keywords, ads, ad groups, and campaigns are best at driving valuable customer activity," and helps you understand your return on investment. Smart Bidding strategies also use your conversions to optimise campaigns toward your goals.
That cuts both ways. Good conversions teach Google to find more customers. Bad conversions teach Google to find more of the wrong thing, very efficiently.
We run Meta Ads and Google Ads for businesses that want more calls, bookings and sales, and checking conversion tracking is one of the first things we look at in a free audit.
Sources: Google Ads Help, About conversion tracking and About primary and secondary conversion actions.