Google Analytics can provide a huge amount of information about how people find and interact with your website. But with so many reports and metrics available, it can be difficult to know which numbers actually matter.
For digital marketers, the goal shouldn't be to track every available metric. Instead, focus on metrics that help answer important questions:
How many people are visiting the website?
Where are visitors coming from?
Are they engaging with the content?
Are marketing campaigns generating results?
Are visitors completing important actions?
Here are seven Google Analytics metrics that every digital marketer should understand and monitor.
- Users
Users help you understand how many people interacted with your website during a selected period.
Google Analytics 4 provides several user-related metrics, including total users, active users, new users, and returning users. Active users represent people who engaged with your website or app according to Google's measurement criteria.
For marketers, user data can help answer questions such as:
Is website reach increasing?
Are marketing campaigns bringing new visitors?
Are people returning to the website?
Which channels are attracting the most users?
However, user numbers should not be evaluated alone. A website can receive thousands of visitors without generating meaningful business results.
That's why engagement and conversion metrics are equally important.
- Sessions
A session represents a period of interaction with your website or application.
In GA4, a session begins when a user starts interacting with the website or app and no previous session is currently active. By default, a session ends after 30 minutes of inactivity.
Sessions are useful for understanding the overall volume of visits to your website.
For example, imagine a website receives:
5,000 users
7,500 sessions
This indicates that the website generated more sessions than unique users, meaning some visitors returned or generated multiple sessions.
When analyzing sessions, compare them with engagement and conversion data to understand whether the additional visits are valuable.
- Engagement Rate
Traffic is only useful when visitors actually engage with your website.
Engagement rate measures the percentage of sessions that qualify as engaged sessions. In GA4, an engaged session is one that lasts longer than 10 seconds, includes a key event, or includes at least two page or screen views.
The basic calculation is:
Engagement Rate = Engaged Sessions ÷ Total Sessions × 100
A higher engagement rate can indicate that visitors are finding the content relevant and interacting with the website.
If engagement is low, investigate:
Landing page relevance
Page speed
Content quality
Mobile experience
Search intent
Internal linking
Call-to-action placement
Don't automatically assume that a low engagement rate means a page is unsuccessful. Always consider the purpose of the page and the source of the traffic.
- Traffic Sources
Knowing where your visitors come from is essential for digital marketing.
GA4's Traffic acquisition reports help marketers understand where website and app visitors originate. These reports can include channels such as organic search, paid search, organic social, paid social, email, and direct traffic.
For example, you may discover that:
Organic search generates the most users.
Paid search produces more conversions.
Social media generates strong engagement.
Email brings highly engaged returning visitors.
This information can help you make better decisions about where to invest your marketing resources.
It's also important to understand the difference between User acquisition and Traffic acquisition.
User acquisition focuses on how new users first find your website, while Traffic acquisition focuses on the source of sessions.
- Conversions and Key Events
Website traffic isn't usually the final objective.
Businesses often want visitors to perform specific actions, such as:
Submit a contact form
Request a quote
Make a purchase
Sign up for a newsletter
Download a resource
Register for an event
Start a free trial
These actions should be measured as important events or conversions based on your business objectives.
GA4 allows marketers to designate important events as key events, making it possible to measure how often users complete valuable actions.
For example, if an SEO campaign generates 10,000 visitors but only two leads, simply reporting the traffic increase doesn't tell the full story.
A better analysis would connect:
Traffic → Engagement → Key Events → Business Results
This provides a much clearer picture of marketing performance.
- Conversion Rate
The number of conversions is important, but conversion rate provides additional context.
A simple conversion-rate calculation is:
Conversion Rate = Conversions ÷ Relevant Users or Sessions × 100
For example, suppose a landing page receives 2,000 sessions and generates 100 conversions.
The conversion rate would be:
100 ÷ 2,000 × 100 = 5%
This metric can help marketers evaluate how efficiently traffic turns into desired actions.
If traffic increases but the conversion rate decreases, it may be worth investigating:
Landing page quality
Audience targeting
Search intent
Offer relevance
Page speed
Form usability
Calls to action
For paid advertising, conversion data can also help evaluate campaign performance and marketing efficiency.
- Average Engagement Time
Average engagement time helps marketers understand how long users actively engage with a website or app.
Google defines average engagement time based on the amount of time the website is in focus in a user's browser or the app is in the foreground.
This can be particularly useful for content-heavy websites.
For example, if an article has a high number of visitors but very little average engagement time, you may want to investigate whether:
The introduction matches the search intent.
The content is easy to read.
The page loads quickly.
Visitors can quickly find the information they need.
The title accurately represents the content.
However, don't use engagement time as a standalone measure of success. A short visit can be perfectly normal if the user quickly finds the answer they need.
How Should Digital Marketers Use These Metrics Together?
The biggest mistake marketers make is looking at individual metrics without considering the bigger picture.
Instead of asking:
"How much traffic did we get?"
Ask:
"Where did the traffic come from, how did visitors engage, and what actions did they take?"
A simple reporting framework could look like this:
Acquisition
Where are users coming from?
↓
Users & Sessions
How much traffic are we generating?
↓
Engagement
Are visitors interacting with the website?
↓
Key Events
Are visitors completing important actions?
↓
Conversion Rate
How efficiently are we turning visitors into leads, customers, or other valuable outcomes?
This approach gives marketers a more complete understanding of performance.
Don't Track Metrics Without a Goal
Every metric should have a purpose.
For example:
Marketing Goal Useful Metrics
Increase website visibility Users, Sessions, Traffic Sources
Improve content engagement Engagement Rate, Average Engagement Time
Generate leads Key Events, Conversion Rate
Improve SEO performance Organic Traffic, Engagement, Key Events
Evaluate paid campaigns Traffic, Key Events, Conversion Rate, Cost
Improve customer acquisition New Users, Traffic Sources, Key Events
The exact metrics you prioritize should depend on your website, business model, audience, and marketing objectives.
Final Thoughts
Google Analytics becomes much more useful when you stop trying to track everything and focus on the metrics connected to your goals.
Users and sessions help you understand traffic volume. Traffic sources show where visitors come from. Engagement rate and average engagement time provide insight into user behavior. Key events and conversion rate help connect website activity to meaningful outcomes.
The most effective approach is to look at these metrics together rather than treating each number as an isolated KPI.
For a deeper look at using analytics to evaluate SEO performance and identify opportunities, you can also read:
SEO Analytics: Track Performance & Find Opportunities
Start with the metrics that directly support your marketing objectives, review them consistently, and use the insights to make better decisions.
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