How to Set Up Google Ads Conversion Tracking (Step-by-Step)

In this guide:

If Google Ads doesn't know what a conversion looks like, it can't optimise for one. That's not a minor settings issue. It's the single most common reason we see Australian businesses burning budget on clicks that never turn into leads or sales.

Google Ads conversion tracking tells Google which clicks actually matter, so the algorithm can find more people like the ones who already converted.

We took over a home renovation account in Adelaide where the previous agency had run campaigns for 18 months with broken tracking. Three months after we fixed it, conversions were up 41% and CPA was down 43%. The ads barely changed. The tracking did. Here's exactly how to set it up properly from the start.

What Is Conversion Tracking and Why Does It Matter?

Google Ads conversion tracking dashboard showing conversion data on a laptop screen

Conversion tracking is a piece of code that fires when someone completes a valuable action on your website after clicking your ad. That action might be filling out a contact form, calling your business, completing a purchase, or booking an appointment.

Without it, Google Ads is flying blind. It knows someone clicked, but it has no idea whether that click turned into a real enquiry. The algorithm can't learn which audiences, keywords, or ads are driving results.

That means you're looking at a dashboard full of click data with no way to connect it to revenue.

This matters even more if you're using automated bidding. Strategies like Maximise Conversions or Target CPA rely entirely on conversion data to make decisions. If that data is wrong or missing, the algorithm optimises toward the wrong outcomes.

Our guide on Google Ads bidding strategies explains how each strategy depends on this data.

What Counts as a Conversion?

Before you set anything up, decide what you're tracking. Not everything needs to be a conversion. The goal is to track actions that represent real business value.

For most Australian service businesses, the primary conversions are form submissions, phone calls from the ad or website, and booking confirmations. For eCommerce, it's purchases and sometimes add-to-cart actions as secondary conversions.

A common mistake is tracking page views or button clicks as conversions. These inflate your numbers and confuse the algorithm. If someone lands on your "Thank You" page after submitting a form, that's a conversion. If someone just visits your homepage, that's not.

Google Ads lets you mark conversions as "Primary" or "Secondary." Primary conversions are used for bidding optimisation. Secondary conversions are tracked for reporting but don't influence the algorithm. Use this distinction deliberately.

The Two Ways to Set Up Google Ads Conversion Tracking

Google Ads conversion tracking setup comparison showing Google tag versus Google Tag Manager methods

There are two standard methods, and both work. Which one you use depends on your comfort level and whether you have Google Tag Manager already installed on your site.

Google Ads tag (direct install)

This is the simpler option. You generate a tag inside Google Ads, then paste it into the code of your website. It works well for straightforward setups like tracking a single thank-you page or a phone call click.

Google Tag Manager (GTM)

This is the more flexible option. Instead of putting code directly on your site, you manage all your tags through GTM's interface. This is better if you're tracking multiple conversion types, running Meta Ads alongside Google, or want to make changes without editing your website code every time.

If you're just getting started, the direct tag is faster. If you're planning to scale or already use GTM, go that route from the start and save yourself the migration later.

How to Set Up Google Ads Conversion Tracking with a Google Tag (Step-by-Step)

This is the most common method for small businesses setting up tracking for the first time.

Step 1: Open conversion settings. In your Google Ads account, click Goals in the left menu, then Conversions, then Summary. Click the blue "New conversion action" button.

Step 2: Choose the conversion source. Select "Website" for form submissions and page-based conversions. Select "Phone calls" if you want to track calls from your ads or website.

Step 3: Enter your website URL. Google will scan your site and suggest conversion events it can detect automatically. For most small business sites, you'll want to set up a manual conversion action rather than relying on auto-detection.

Step 4: Configure the conversion action. Give it a clear name (e.g., "Contact Form Submission"). Set the category to "Lead" for service businesses or "Purchase" for eCommerce. Choose "Primary" so the algorithm uses it for bidding.

Set the count to "One" for leads (you don't want the same person counted twice) or "Every" for purchases where each transaction matters separately.

Step 5: Set up the Google tag. Google Ads gives you two code snippets. The first is the global site tag, which goes on every page of your site in the <head> section. The second is the event snippet, which goes only on the page that confirms the conversion happened (usually your thank-you page).

Step 6: Install the code. If you're on WordPress, you can paste the global tag into your theme header or use a plugin like Insert Headers and Footers. Place the event snippet on the specific thank-you or confirmation page only.

Step 7: Save and test. Complete a test conversion yourself. Fill in your own form or trigger the action, then check back in Google Ads under Conversions to confirm the event registered. For more detail on this process, see Google's official conversion tracking guide.

How to Set Up Conversion Tracking Through Google Tag Manager

Google Ads conversion tracking setup steps using Google Tag Manager in a step-by-step infographic

If you already have GTM installed on your site, this method keeps everything in one place and is easier to maintain long term.

Step 1: Create a conversion action in Google Ads. Follow the same process as above (Goals, Conversions, New conversion action). When you reach the installation step, choose "Use Google Tag Manager." Google Ads will give you a Conversion ID and a Conversion Label. Copy both.

Step 2: Open Google Tag Manager. Go to tagmanager.google.com, open your website's container, and click "Add a new tag."

Step 3: Create the tag. Choose "Google Ads Conversion Tracking" as the tag type. Paste in the Conversion ID and Conversion Label from Step 1.

Step 4: Set the trigger. The trigger tells GTM when to fire this tag. For a thank-you page conversion, create a trigger that fires on "Page View" where the URL contains your thank-you page path (e.g., /thank-you). For a button click or form submission, you'll use a click or form submission trigger instead.

Step 5: Submit and test. Use GTM's Preview mode to test. Visit your site, trigger the conversion, and confirm the tag fires in the debug panel. Once verified, publish the container.

How to Verify Your Google Ads Conversion Tracking Is Working

Setting it up is only half the job. You need to confirm it's actually recording correctly.

Google Tag Assistant is a Chrome extension (now built into GTM's preview mode) that shows you which tags are firing on any page. Load your thank-you page and check that the Google Ads conversion tag appears and shows as "firing."

Google Ads conversion status takes 24 to 72 hours to update after installation. Go to Goals, then Conversions, then Summary and look at the Status column. "Recording conversions" means it's working. "No recent conversions" or "Inactive" means something is wrong.

Real-world test: Submit your own form. Wait 24 hours. Check if the conversion appeared in Google Ads. This is the simplest and most reliable check. If it doesn't show up, the code is either missing from the page, on the wrong page, or not firing correctly.

One issue we see regularly is tracking that fires on the form page rather than the confirmation page. This records every visitor as a conversion, not just the ones who submitted. If your numbers seem too good to be true, this is usually why.

Our guide on how to know if your Google Ads are working covers more on reading your data accurately.

Common Google Ads Conversion Tracking Mistakes (and How to Avoid Them)

Google Ads conversion tracking mistakes checklist showing common errors and fixes

Tracking the wrong page. The tag needs to fire on the page users see after converting, not the page with the form on it. If your form redirects to /thank-you, the event snippet goes on /thank-you. This is the most frequent error we find in account audits.

Counting every conversion instead of one. For lead generation, set the count to "One" per click. If someone submits your form three times, that's one lead, not three. "Every" is for eCommerce purchases where each transaction is a separate sale.

Not tracking phone calls. If your business gets leads by phone (and most Australian service businesses do), you need call tracking set up alongside form tracking. Google Ads offers call extensions and website call conversions, or you can use a third-party platform for more detailed attribution.

One of our Sydney carpet cleaning clients was measuring form leads only and couldn't understand why the numbers looked low. Once we added call tracking and cleaned up the negative keyword list, CPL dropped from $108 to $70. Half the real leads had been invisible.

These kinds of gaps are one of the most common Google Ads mistakes we see Australian businesses making.

Letting conversion data go stale. Tracking breaks. Website updates overwrite code. Plugins conflict. Check your conversion status in Google Ads at least monthly. If you see "No recent conversions" and you know leads are coming in, something has broken and your campaigns are optimising with incomplete data.

Frequently Asked Questions About Google Ads Conversion Tracking

How long does it take for Google Ads conversion tracking to start working?

Google Ads typically takes 24 to 72 hours to begin recording conversions after the tag is installed. If you don't see data after 72 hours and you've confirmed the tag is on the correct page, check for installation errors using Google Tag Assistant or GTM's preview mode.

Can I track phone calls as conversions in Google Ads?

Yes. Google Ads supports three types of call conversions: calls from call extensions on your ads, calls from a Google forwarding number on your website, and imported call data from a third-party call tracking system. For most Australian service businesses, tracking calls from both ads and your website is the minimum setup you need.

Do I need Google Tag Manager for conversion tracking?

No. Either the direct Google Ads tag or Google Tag Manager works. The direct tag is simpler for basic setups with one or two conversion actions. GTM is better if you're tracking multiple events or want to manage tags without editing website code. There's no performance difference.

What's the difference between primary and secondary conversions in Google Ads?

Primary conversions are used by Google's automated bidding to optimise your campaigns. Secondary conversions are tracked for reporting only and don't influence how Google spends your budget. Mark your most valuable actions (form submissions, purchases, qualified calls) as primary. Track softer actions (newsletter signups, video views) as secondary so they don't skew your bidding.

Why is Google Ads showing conversions but I'm not getting real enquiries?

This usually means the tracking is firing on the wrong event. Check that the conversion tag is on your thank-you or confirmation page, not your contact page. Also check whether you've accidentally set a page view or button click as a conversion action.

If the numbers in Google Ads don't match your actual leads, the tracking setup is the first place to look.

Not Sure If Your Google Ads Conversion Tracking Is Set Up Right?

Broken conversion tracking is one of the most expensive invisible problems in Google Ads. You can't see it in your metrics because the metrics themselves are the thing that's wrong.

If you're not confident your tracking is accurate, or your numbers have never quite matched reality, it's worth getting it checked before you spend another dollar on ads.

We audit conversion setups as part of every new account we take on. Read our complete guide to Google Ads in Australia to see how we work with Australian businesses.

Or if you'd like us to look at your account directly, talk to us about your Google Ads campaign.