Google Analytics dimensions and metrics

What is a metric in Google Analytics 4?

A metric is a quantitative data measurement that shows how a website or digital product performs. Metrics are expressed through numbers (number values, %, $, time) in a Google Analytics report.

Here are some popular metrics in Google Analytics:

• Average session duration

• Bounce rate

• Conversion rate

• Revenue

Access your metrics by clicking on the ‘Reports’ tab of your Google Analytics interface, where you’ll find different reports like ‘Acquisition’, ‘Engagement’, and ‘Retention’.

10+ Google Analytics metrics to track 

The Google Analytics metrics you should track or customize for your website depend on your target audience, industry, business goals, and the problem you’re trying to solve. 

However, there are some common GA4 metrics you can use to understand your users, optimize your digital marketing efforts, and improve conversions. 

• Session: a session is the period of a user's interaction with your website that can last up to 30 minutes of inactivity. GA4's Session metric reflects the number of sessions that started on your site. There’s no restriction on the maximum duration a session can continue. Tracking total sessions provides insight into your overall traffic and user interest.

• Average session duration: the average time (in seconds) users spend on your website. Longer durations indicate engaging content, while shorter ones suggest room for improvement.

• Engagement rate: the percentage of engaged sessions, calculated as the ratio of engaged sessions to total sessions. It helps you understand user interaction, with a higher rate indicating more value and potential for conversions. (Engaged sessions are the number of sessions that last 10 seconds or longer, had one or more conversion events, or two or more pageviews.)

• Active users: this is the primary User metric in Google Analytics 4 and denotes the number of distinct users who visited your website and had an engaged session. It gives you a broad view of user engagement and overall platform activity. It’s recorded by events like ‘first_visit’ or with parameters like ‘engagement_time_msec’.

• Bounce rate: the percentage of sessions where users didn't have an ‘engaged session’ (explained above) on your site. High bounce rates could mean users need help finding what they're looking for or that your site needs optimization.

• Views: the number of times users accessed a web page, including repeated views of the same screen or page. Use this metric to identify popular content or features and focus on areas that need improvement or promotion.

• Conversions: this represents the number of times users triggered a specific event or completed a desired action—like making a purchase, signing up for a newsletter, or filling out a contact form. Tracking conversions helps you measure the success of your website changes and optimize marketing campaigns.

• Total revenue: your overall income from website sales, in-app purchases, subscriptions, and ads (minus refunds). Use this metric to evaluate your financial performance, make informed decisions, optimize campaigns, and ensure sustainable growth.

• Entrances: the number of times a user began a session on a specific page. Identifying common starting points provides insights into effective landing pages. Optimizing these entry points helps you create a positive first impression, leading to better user engagement and retention.

• Exits: the number of times a session ended on a particular page or screen. High exit rates signal user issues, like poor usability or a lack of relevant content. Fixing these can improve your user experience and lower bounce rates.

• Ecommerce metrics: metrics like Add to carts, Checkouts, and Gross purchase revenue give you insights into customers’ buying behavior and help you optimize the shopping experience. For example, a high number of add to carts indicates strong product appeal, while tracking gross purchase revenue helps you assess marketing and sales strategies.

• Lifetime engaged sessions: shows the number of engaged sessions a user has had since their first visit to your website, so you can identify loyal user segments and tailor strategies to enhance their experience further

• Lifetime value (LTV): shows the total amount of revenue you generate from each customer over the course of their relationship with your business, and includes events like purchases, subscriptions, and conversions. It's a key metric that helps you understand user profitability, so you can allocate resources effectively and tailor your marketing strategies to segments with a higher LTV.

What is a dimension in Google Analytics?

A dimension is an attribute used to describe, segment, organize, and sort data. 

Popular examples of Google Analytics dimensions are

• Medium

• Browser

• Country

• Language

• Campaign

• Device category

Each dimension accepts different values. For example, the dimension Medium tells you through which channels you acquire new users. It accepts values like 'affiliate', 'cpc', and ‘email’. Using this dimension to identify traffic sources helps you understand the effectiveness of different marketing channels, so you can allocate resources better.

Primary and secondary dimensions

Each GA4 report comes with a pre-selected primary dimension that gives you high-level insights into how the dimension performs in relation to a set of metrics. 

First, navigate to your report of choice, go to the table on the top left, and click on the ‘∇’ icon to select your primary dimension from the drop-down menu. Then, narrow down your data and select your secondary dimension by clicking on the ‘+’ sign (seen above) and scrolling through the options.

For example, if you want to see data on different browsers, head to the ‘Tech’ report. By clicking on ‘Tech details’ and using Browser as a primary dimension, you can see your data across values like Chrome, Firefox, and Safari. If you select the Demographics category and then Age as a secondary dimension from the + menu, you can now also review the browser data of users across different ages.

10+ Google Analytics dimensions to track

Google Analytics provides various dimensions that allow you to analyze user behavior, traffic sources, content interaction, and demographics, giving you a complete picture of your visitors and their website experience. 

However, online businesses use some popular GA4 dimensions with metrics to understand user behavior and improve conversions. We've grouped such dimensions below based on their categories in Google Analytics 4. 

• Geography: localize content and the user experience using dimensions like Country and City

• Platform/device: by analyzing dimensions like Browser, Device category, Language, and Platform, you can optimize the user experience for different devices and platforms like Android and iOS

• Page/screen: identifying the point where people entered your website is useful to determine which of your pages were successful in converting visitors. Do this by using the Landing page and Page location dimensions to improve key user touchpoints, reduce user frustration, and boost conversions.

• Traffic source: knowing your website's traffic sources is key to refining marketing strategies. Use dimensions like First user source/medium and Session source/medium to gain insights into user acquisition and session beginnings.

• Event: provides granular insights into specific user interactions using the Event name dimension, helping you understand user preferences and behaviors

• Ecommerce: dimensions like Item brand, Item category, and Item ID provide insights into shopping behavior on online stores

• Time: the Date + hour dimension gives you information about when an event occurred, so you can tailor content releases, promotions, or support availability by analyzing peak activity times or reducing ad spend during low engagement times

• Demographics: dimensions like Age, Gender, and Interests provide insights into your broader user base, allowing for more personalized marketing efforts

• Attribution: the attribution dimension Source/medium identifies where users landed on your site from, while Campaign and Campaign ID pinpoint promotional efforts that led to a conversion. Analyzing them helps you refine your marketing strategy, optimize user touchpoints, and enhance campaigns.

• User lifetime: use the Last active date and Last purchase date dimensions to get insights into retention and user loyalty 

What metrics and dimensions can’t tell you (and how to find the data you need)

Dimensions and metrics are incredibly useful to understand the performance of your site as a whole and any of its individual pages. They help you

• Gain insights into user interests and preferences, so you can evaluate the performance of specific pages and sections

• Map out your website ecosystem, showing you where users are coming from and how they move through your site

• Compare behaviors across segments to review performance across different groups (like desktop vs. mobile users and conversion rate across landing pages)

• Identify priorities and quantify their impact to determine which pages have the potential to contribute to your company's growth goals—and optimize accordingly

However, while the quantitative data from Google Analytics helps you keep the ultimate log of everything that’s happening on your website, it still can’t tell you exactly why your visitors behave the way they do.

Combine quantitative and qualitative data for a full picture of your website

Google Analytics is a great tool to gather quantitative data and keep track of everything that happens on your website. However, you also need qualitative insights to get a complete picture of

• The drivers that bring people to your website

• The barriers that might stop them or make them leave

• The hooks that persuade them to convert

so you can improve your site and give users an experience they’ll love.