[Google Analytics 4](/about/google-analytics-4) June 16, 2025 # Custom Metrics and Dimensions in GA4 Optimize reporting with custom metrics and dimensions in GA4. Follow our step-by-step guide for better data-driven decision-making. ![](/images/65ca3e178e3953010c34d2c6_65b7dae17618c96637f02d9b_rafael-campoamor.avif) **[Rafael Campoamor](/authors-guides/rafael-campoamor)** Digital Marketing Freelancer 5 min read · 1041 words ## Understanding Custom Dimensions in GA4 **Custom dimensions in GA4** allow analysts to track data beyond the default metrics, offering greater control over the information you collect. These dimensions provide the ability to define and track attributes specific to your business, such as user characteristics or interactions, that aren’t available in standard settings. This degree of customization improves the precision of ** GA4 reporting** and enables more detailed analysis. GA4 supports three types of custom dimensions: - **User-level**: Attributes assigned to users that persist across sessions, such as customer tier or region. - **Session-level**: Information tied to a particular session, like traffic source or time spent on the site. Learn more about [GA4 sessions and engagement metrics](/guides/understanding-ga4-sessions-engagement-metrics). - **Event-level**: Data collected at the event level, such as button clicks, video plays, or form submissions. **Custom dimensions** are valuable when you need detailed data specific to your objectives. For example, tracking user engagement based on subscription level or identifying user actions tied to a particular campaign. You can leverage this data for ** data-driven decision-making** that aligns with your business goals. For a more detailed exploration of **GA4 optimization** and best practices, refer to the [** Mastering GA4 guide**](/guides/mastering-ga4-a-comprehensive-guide-for-data-analysts). You can also check the guide on [** data layer optimization**](/guides/optimizing-ga4-data-layer-analytics) for a deeper understanding of implementing custom dimensions. Learn more about advanced data analysis techniques in [** GA4 reporting**](/guides/optimizing-ga4-data-layer-analytics). Consult [Google’s guide](https://support.google.com/analytics/answer/14240153?hl=en) for more technical information on setting up custom dimensions and metrics. ## Understanding Custom Metrics in GA4 **Custom metrics in GA4** allow businesses to track specific data points that go beyond standard metrics. Use these metrics to measure non-standard interactions, such as conversions, engagement, or other user actions relevant to your business that default metrics do not capture. By creating **custom metrics**, analysts can measure actions like form submissions, video plays, or specific interactions tied to a marketing campaign. This provides more relevant data for ** GA4 reporting**, offering a clearer view of how users are engaging with your site or app. Custom metrics help focus on key performance indicators that matter most to your business objectives. Custom metrics also support a more detailed analysis of **user behavior**. Whether it's tracking the number of interactions with a particular feature or calculating a custom conversion rate, these metrics allow analysts to work with more relevant data that aligns with specific business needs. For a more in-depth look at how **custom metrics** can enhance your analysis in GA4, explore the upcoming guide on ** AI and machine learning in GA4**, and check out the [** Mastering GA4**](/guides/mastering-ga4-a-comprehensive-guide-for-data-analysts) resource. To get started with setting up your custom metrics, refer to [Google’s documentation](https://support.google.com/analytics/answer/14239619?hl=en#zippy=%2Canalyze-the-metric-in-a-report%2Canalyze-the-metric-in-an-exploration) for step-by-step instructions. ## How to Set Up Custom Dimensions and Metrics in GA4 ![Step-by-step guide for setting up custom metrics and dimensions in GA4, including instructions to access the Admin Panel, create custom dimensions or metrics, assign scope and parameters, and save and publish the setup](/images/670508a5510d3745061e756a_66fab6aedf95a9e03ee8aafb_AD_4nXe_MhboQfOEl9EALR5hJQeMFEG3Ei4Fr_dBg0YfJbirE3bOBrHPdVzwod_y61zD_5fpLN2GWfLe4eEvOZPvzTU2vlfCXhpF9uPfDeT2OhJHkfmV65cIEIfoZB7WwzIaGM3XkufrrjcbNgj17wpxaDEaOm8K.avif) Setting up **custom dimensions and metrics in GA4** allows you to tailor your data collection to suit your specific analysis needs. This process is simple and provides the flexibility to monitor data beyond standard measurements, enhancing your ** GA4 reporting**. Below is a step-by-step guide to get you started. 1.  **Access the Admin Panel:** First, log in to your GA4 property and navigate to the Admin section. Under the "Property" column, select Custom Definitions to create either a custom dimension or a custom metric. 2. **Create a New Custom Dimension:** Click Create Custom Dimension and define the name, scope (choose between event, user, or session level), and the event parameter or user property that you want to track. For example, you might want to track a user’s subscription level as a custom dimension. 3. **Create a New Custom Metric:** To create a custom metric, click Create Custom Metric. Assign it a name, and choose the appropriate event parameter that represents the metric you want to track. Configure the measurement unit, whether it’s a count, duration, or currency. This could be useful for tracking custom KPIs like video watch time or conversion rates that are not part of GA4’s default metrics. 4. **Save and Publish:**  After configuring your custom dimension or metric, make sure to save and publish the changes. Once you complete this, the custom dimension or metric starts collecting data, allowing you to analyze it in your GA4 reports. For more advanced techniques on customizing **GA4 reporting**, refer to the [** advanced data analysis guide**](/guides/advanced-data-analysis-techniques-ga4). If you’re integrating with a tag management system like ** Tealium**, explore how it complements GA4 customization in this [** GA4 and Tealium Tag Management guide**](/guides/ga4-tealium-tag-management-advanced-data-analytics). ## Custom Reporting with GA4: Leveraging Your Custom Metrics and Dimensions After setting up **custom metrics and dimensions** in GA4, the next step is to integrate them into your reports for more detailed insights. ** GA4 reporting** allows you to use these custom data points to tailor reports that align with your specific business requirements. Focus on relevant metrics and dimensions to gain a more precise view of performance, whether tracking user engagement, conversions, or other key indicators. ### Reporting Scenarios Custom dimensions and metrics open up more possibilities in GA4 reports. For example, **cross-device tracking** becomes more detailed when using a user-level custom dimension, helping you analyze user behavior across multiple devices. For e-commerce, custom metrics can be applied to track specific actions, such as the total value of items added to a cart or the conversion rates tied to specific campaigns. By incorporating custom metrics and dimensions into your reporting, you can analyze data more effectively and produce insights that are tailored to your needs. This degree of reporting flexibility enables improved decision-making and aids in identifying opportunities or issues in your data. For more ways to enhance your **GA4 reports**, check out the upcoming post on [** advanced reporting capabilities**](/guides/advanced-reporting-features-ga4#:~:text=Setting%20up%20custom%20reports%20in,or%20conversion%20rate). To further optimize your reports, explore GA4's AI and machine learning features and make sure your [** data layer setup**](/guides/optimizing-ga4-data-layer-analytics) is fully optimized for custom reporting. ## Conclusion Customizing **GA4 metrics and dimensions** aligns your reports with specific business needs. Set up these tailored data points to enhance the relevance and precision of your ** GA4 reporting**. This allows for more precise tracking of key metrics like conversions and user interactions. For more information on optimizing your GA4 setup, review these [**advanced data analysis techniques**](/guides/advanced-data-analysis-techniques-ga4) and explore the integration of [** Tealium tag management with GA4**](/guides/ga4-tealium-tag-management-advanced-data-analytics). Stay updated for upcoming posts on ** AI and machine learning in GA4** and [** advanced reporting capabilities**](/guides/advanced-reporting-features-ga4#:~:text=Setting%20up%20custom%20reports%20in,or%20conversion%20rate). On this page 1. [*01*Understanding Custom Dimensions in GA4](#understanding-custom-dimensions-in-ga4) 2. [*02*Understanding Custom Metrics in GA4](#understanding-custom-metrics-in-ga4) 3. [*03*How to Set Up Custom Dimensions and Metrics in GA4](#how-to-set-up-custom-dimensions-and-metrics-in-ga4) 4. [*04*Custom Reporting with GA4: Leveraging Your Custom Metrics and Dimensions](#custom-reporting-with-ga4-leveraging-your-custom-metrics-and-dimensions) 5. [*05*Conclusion](#conclusion) **Stop babysitting tags** Trackingplan audits your real user data around the clock and flags issues before they cost you. [Start free trial →](https://app.trackingplan.com/signup) ![](/images/65ca3e178e3953010c34d2c6_65b7dae17618c96637f02d9b_rafael-campoamor.avif) **Rafael Campoamor** Digital Marketing Freelancer Digital Marketing Freelancer Share Copy link [LinkedIn](https://www.linkedin.com/sharing/share-offsite/?url=https%3A%2F%2Fwww.trackingplan.com%2Fguides%2Fcustom-metrics-dimensions-ga4-enhance-reporting) [X](https://twitter.com/intent/tweet?url=https%3A%2F%2Fwww.trackingplan.com%2Fguides%2Fcustom-metrics-dimensions-ga4-enhance-reporting&text=Custom%20Metrics%20and%20Dimensions%20in%20GA4) Read next [All Guides →](/guides) - [ 6 minGoogle Analytics 4October 26, 2026 ### Google Search Console vs Google Analytics: why they differ Compare Google Search Console clicks with GA4 organic sessions: what each tool counts, the normal reasons they differ, and when the gap means broken tracking. by **David Pombar**](/guides/google-search-console-vs-google-analytics) - [ 6 minGoogle Analytics 4October 26, 2026 ### How to track ChatGPT and AI traffic in GA4 Track visits from ChatGPT, Gemini, Perplexity and other AI assistants in GA4: the AI Assistant channel, what it misses, and the AI traffic that lands in Direct. by **David Pombar**](/guides/track-chatgpt-ai-traffic-ga4) - [ 14 minGoogle Analytics 4October 15, 2026 ### How to find broken GA4 events and missing properties Trace one GA4 event from the business action to the report to find where it breaks: the dataLayer, GTM, the hit, DebugView, or reporting. by **Mariona Martí**](/guides/find-broken-ga4-events-missing-properties) Trackingplan ## See everything. 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