How to Set Up a Conversion Tag｜A Walkthrough of the Steps in Google Ads

To measure results correctly in Google Ads, setting up a conversion tag is essential. If it isn't set up, then even when results actually occur, they aren't reflected in the dashboard, throwing off automated bidding optimization and effectiveness judgments. This article explains, in a way understandable even for first-timers, the mechanism of the conversion tag, the concrete setup steps in Google Ads, and how to verify after setup.

What Is a Conversion Tag

A conversion tag is a tag for measuring, on your website, results you have defined in advance in Google Ads—such as "purchase," "inquiry," or "membership registration." By linking ad clicks with actions on the site, you become able to check in the Google Ads dashboard which campaign or ad led to a result.

This tag is actually made up of a combination of two kinds. One is the "Google tag" installed across the whole site; the other is the "event snippet" installed on the page where a result occurs. Only when these two are in place does measurement function correctly for the first time.

The Google Tag (for the Whole Site)

The Google tag is the foundation for conversion measurement and remarketing, and is made to operate on all pages of the site. It is linked to the account using a conversion ID (an identifier in the format beginning with AW), and if this is not installed correctly, the subsequent conversion tag will not function either.

The Event Snippet (for the Result Page)

The event snippet is a tag installed on the page where a result occurs—such as purchase completion or inquiry submission—that records the actual conversion. It identifies which result occurred using two things: the conversion ID (the same as the Google tag) and the conversion label, a string unique to each action.

What to Prepare Before Setup

Before entering the tag installation work, there are a few things you should decide. If these are vague, it becomes a cause of measurement going off later.

Clarify the Result You Want to Measure

First, make clear what you will measure as a conversion. Define an action meaningful to your business—purchase, inquiry, document request, membership registration, and so on. When there are several, setting each up as a separate conversion action lets you grasp the effectiveness of each result.

Check the Path to Where the Result Occurs

Check on which page the conversion is completed. In many cases, the thank-you page displayed after completing an inquiry or purchase becomes the measurement point. Grasping the URL of this completion page makes the later tag installation and choice of measurement method smoother.

Steps to Set Up a Conversion Tag in Google Ads

Once preparation is in order, create a conversion action in the Google Ads dashboard. Let's look at the basic flow step by step.

Step 1: Create a Conversion Action

Log in to the Google Ads dashboard, open "Goals" from the top menu, and proceed to "Summary" under "Conversions." Here, click "New conversion action" and select "Website" as the type of result you want to measure. Entering the URL of the site to be measured moves you to the screen where you proceed with the setup.

Step 2: Set the Conversion Details

Next, set the details of the conversion action you are creating. Specify items such as the result type (purchase, lead, etc.), conversion name, counting method, and measurement window, according to your own purpose. In particular, the measurement window and the handling of duplicate counting directly affect how results are counted, so it is important to decide them carefully.

Step 3: Choose the Tag Installation Method

When you create a conversion action, a screen for choosing the tag installation method is displayed. Installation methods mainly include installing the Google tag directly in the site's code, using Google Tag Manager, and using the integration feature of a CMS or e-commerce platform. Choose the method suited to your environment and operating structure.

Step 4: Install the Tag on the Site

When installing the code directly, first install the Google tag on all pages of the site, and then install the event snippet on the result page. When using Tag Manager, you add and deploy the tag from the dashboard; with this method, you need to separately enable a tag called the "conversion linker" and set it to be deployed on all pages.

Verifying Operation After Setup

Once you have installed the tag, always verify that measurement is working correctly. Don't relax just because you have installed it; it is important to check that a result is actually recorded.

Verify with a Test Conversion

Perform, yourself, the operation of actually reaching the result page, and check in the Google Ads dashboard whether the conversion is recorded. Reflection can take time, so it's a good idea to leave it a while and then look at the status. The conversion status display in the dashboard is also a guide to whether measurement has become active.

Watch the Tag Fire with a Verification Tool

Whether the tag is firing correctly can be checked with a verification tool provided by Google. By seeing whether the tag is loaded on the target page and the conversion is recorded at the expected timing, you can discover installation mistakes early. When measurement isn't working well, checking the tag's firing status first is the shortcut.

Summary

The basics of setting up a conversion tag are correctly combining two things: the Google tag placed across the whole site, and the event snippet placed on the result page. Create a conversion action in the Google Ads dashboard, choose the installation method suited to your purpose, and always verify operation after installation. If you keep this flow in mind, even a first-timer can prepare the foundation for measurement. Accurate conversion measurement is the starting point for judging ad effectiveness correctly and optimizing operations. Start your setup by first defining one result you want to measure.