Conversion tracking: finally know what actually works

Conversion tracking is the correct measurement of the actions that matter to you: an enquiry, a demo, a quote. Without that tracking you are guessing which channel brings customers and which channel costs money. In this article you will read what to measure, how to set it up, and which pitfalls you are better off avoiding.

Work it out yourself: measure your conversion rate and compare it against the B2B benchmark with our free conversion rate calculator.

What exactly is conversion tracking?

Conversion tracking records when a visitor performs a valuable action and ties that action to its source: an ad, a search query, an email. In a tool like Google Analytics 4 you define which actions count as a conversion. Only then do you know not just how much traffic you get, but also what that traffic delivers.

With our data & analytics approach every project starts here, because all later decisions lean on these numbers. Measure wrong and you steer your entire budget wrong.

Why measuring conversions is more than counting clicks

Many companies steer on visitors, page views and clicks. Those are vanity metrics: they look great in a report but say nothing about revenue. A channel with lots of traffic and few enquiries costs you money. A channel with little traffic and many enquiries deserves more budget.

Measuring conversions comes down to one question: how many customers does this bring? That is why we prefer to look at the number of qualified enquiries rather than your conversion rate on its own. A high conversion rate on the wrong visitors is worth nothing.

Which conversions should you measure?

Not every action is a real conversion. Split your measurements into macro-conversions (close to revenue) and micro-conversions (signals along the way), so you see both the result and the road towards it.

Those conversions are not all equally close to revenue. From an early signal to a hard enquiry there runs an ascending ladder, and in B2B you mainly steer on the top rung.

Hard conversions: where the revenue sits

A quote request, a completed contact form, a demo booking. These are the actions that make your sales team happy. In B2B this category counts most, because the sales cycle is long and the number of leads is small. Ideally measure a form submit at the real send moment, not only on a thank-you page, because modern forms often load without a page change. The common mistake: counting a quote request and a newsletter sign-up as one pile, which shifts your budget towards the wrong source.

Soft conversions and downloads

A whitepaper download, a webinar registration, a form that was started but not finished. These actions show intent without there being a lead yet. You measure them with a click event on the download button or an event on the success message. Treat them as a separate layer: valuable for understanding your funnel, but do not count yourself rich with them.

Phone calls and calls

Many B2B enquiries still come in by phone. Without call tracking those disappear entirely from your report, which makes channels that deliver many callers wrongly look like poor performers. At the very least measure the click on a phone number on mobile, and consider a call tracking tool if telephony is a serious part of your leads.

Micro-conversions: the early signal

Scroll to the contact block, time on a quote page, a click on the pricing table. Micro-conversions do not predict revenue, but they show where people drop off. Use them to spot bottlenecks, not to inflate your monthly figures.

Conversion type, measurement method and tool at a glance

Conversion type	Example	How you measure it	Where you set it up
Hard conversion	Quote request, demo booking	Form-submit event or thank-you page	GA4 key event plus Google Ads
Form without thank-you page	Contact form with AJAX	Custom event on the success message	Google Tag Manager
Phone call	Click on number or inbound call	Click event or call tracking	Call tracking tool plus GA4
Download	Whitepaper, brochure	Click event on the download button	Google Tag Manager
Micro-conversion	Scroll to contact block, time on page	Scroll or engagement event	GA4

How do you set up conversion tracking?

The basics are the same everywhere, whatever your tooling: define your conversions, install the tracking, tie source to conversion and pass the signals through to your ad platforms. In practice that runs via three tools that work together.

1. Set up GA4 key events

In Google Analytics 4 you mark the events that really matter as a key event (Google used to call this “conversions”). That way GA4 knows which actions it should count in your reports. Start small: mark your hard conversions first, before you add downloads and scrolls. The common mistake: marking everything as a key event, which drowns your overview in noise.

2. Link Google Ads conversions

What you measure in GA4 is not automatically what Google Ads uses to optimise. You import your GA4 key events as a Google Ads conversion or set up a separate Ads tag, so the algorithm can optimise on conversions instead of on clicks. Note that GA4 and Google Ads count differently. Small differences are normal; large ones deserve a check.

3. Google Tag Manager as the switchboard

Google Tag Manager (GTM) is the layer where you manage tags without changing code every time. Via GTM you fire events on button clicks, form submits and downloads, and pass them through to GA4 and Google Ads. Work with clear naming and test every tag in preview mode before you publish.

How your tracking fits together technically you can read in our article on what tracking is. If you want to know why you should build your tracking ever more robustly, also look at first-party data.

Attribution: which channel gets the conversion?

A customer is rarely convinced after a single click. Someone finds you via a search, comes back later via an ad and only converts after an email. Attribution decides which channel gets the credit. A last-click model gives everything to the final touchpoint and therefore underestimates channels that work early in the journey. For long B2B cycles you deliberately choose your model instead of accepting the default. In practice we see that a wrong model wrongly kills off whole channels in a report.

Consent and GDPR: measuring within the rules

Since the stricter cookie rules you may only measure after a visitor gives permission. Without correct consent handling you lose data or break the law. Google works here with Consent Mode, which adapts your measurement behaviour to the choice in the cookie banner. Make sure your setup is GDPR-compliant before you go live. The trade-off is honest: privacy rules cost you some measurement accuracy, but well-configured consent and first-party data catch a large part of that back.

Common mistakes when measuring conversions

Tracking often breaks on detail. The most frequent problems:

• Double counting. A conversion that fires again on every page refresh.
• No sources. Conversions without a channel, so you do not know what works.
• Wrong value. Counting every lead equally, while one big customer is worth ten small ones.
• Forgetting to test. A form that changes, while nobody checks the tracking.

One badly configured tag can pollute your decisions for months. A short check prevents big misconceptions.

From measuring to better decisions

Good conversion tracking is not a goal in itself, it is the basis to shift budget towards what works. Once you know which channel brings customers, you can calculate your ROAS honestly and stop running campaigns that deliver nothing.

At Suivo we started by measuring what the homepage really delivered, and built growth from there. Only when the numbers were right did we know which interventions made the difference. You can also read more about this in our piece on a marketing dashboard that steers on customers.

Frequently asked questions

What is the difference between a conversion and a key event in GA4?

In practice they are the same thing. Google Analytics 4 first spoke of “conversions” and renamed them “key events”. It remains the label for an event that you consider important enough to count as a result. The term “conversion” in GA4 is now reserved for what you pass through to Google Ads.

Why do my conversion figures differ in Google Ads and GA4?

Because both tools count differently. Google Ads attributes a conversion to the moment of the click, GA4 to the moment of the conversion itself, and they use different attribution windows. Small differences are normal. Large differences usually point to duplicate tags or a wrong link, and deserve a check.

Do I need Google Tag Manager for conversion tracking?

Not necessary, but handy. You can set up basic tracking directly in GA4 or via the Google tag. Once you want to manage multiple events, button clicks and platforms, Google Tag Manager saves you a lot of loose code and makes testing easier.

Ready to measure what really counts?

Tell us what you measure today and where you have doubts, and we will tell you honestly whether your tracking is right or not. Sometimes the answer is simple, sometimes we discover that you have been steering on wrong numbers for months.

We are a small team that moves fast and will not push unnecessary dashboards on you. Book your free intake and within 24 hours you will hear where your tracking leaks.