KPI Tree

Google Analytics Metric

Web Analytics

Custom Event Conversion Rate = (Sessions with Custom Event / Total Sessions) x 100

Custom event conversion rate measures the percentage of sessions where users trigger a specific custom-defined event in GA4, such as video completions, file downloads, calculator interactions, or in-app actions. It extends standard conversion tracking to business-specific interactions that standard events do not cover.

Google AnalyticsWeb Analytics

Custom Event Conversion Rate

Custom event conversion rate measures the percentage of sessions where users trigger a specific custom-defined event in GA4, such as video completions, file downloads, calculator interactions, or in-app actions. It extends standard conversion tracking to business-specific interactions that standard events do not cover.

How to calculate custom event conversion rate

Custom Event Conversion Rate = (Sessions with Custom Event / Total Sessions) x 100

Why custom event conversion rate matters for Google Analytics users

Standard GA4 events cover common interactions, but every business has unique engagement signals that predict conversion. A SaaS company might track demo video completions. An e-commerce site might track size guide interactions. These custom events often correlate more strongly with conversion than standard metrics.

Mapping custom event conversion rates into your metric tree reveals which bespoke interactions predict business outcomes. Statistical correlations show whether a custom event is a genuine leading indicator of conversion or merely a coincidental behaviour.

Understand and act on custom event conversion rate with KPI Tree

KPI Tree connects custom event data from your warehouse and tracks conversion rates for each custom event. Position them alongside standard conversion metrics in your engagement tree.

Assign RACI ownership to the team responsible for each custom interaction. Set alerts when custom event conversion rates shift and track changes to the experiences that drive those events.

Get started with your Google Analytics data

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Pull metrics from Google Analytics directly through the Model Context Protocol.

Data Warehouse
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Connect your existing warehouse where Google Analytics data already lands.

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Our professional services team can build you turn-key AI foundations in a matter of weeks. Data warehouse on Snowflake/BigQuery, ELT with Fivetran, all modelled in dbt with a semantic layer.

Related Google Analytics metrics

Conversion Rate

Web Analytics

Metric Definition

Conversion Rate = (Conversions / Sessions) x 100

Conversion rate measures the percentage of Google Analytics sessions or users that complete a defined conversion event - such as a purchase, signup, form submission, or key feature interaction. It quantifies how effectively your website turns visitors into customers or leads.

View metric

Event Tracking Rate

Web Analytics

Metric Definition

Event Tracking Rate = (Sessions with Event / Total Sessions) x 100

Event tracking rate measures the percentage of sessions that trigger specific GA4 events, indicating how actively users interact with tracked elements on your site. It serves as both an engagement indicator and an instrumentation health metric, revealing whether your tracking captures the interactions that matter.

View metric

Goal Completion Rate

Web Analytics

Metric Definition

Goal Completion Rate = (Goal Completions / Sessions) x 100

Goal completion rate measures the percentage of Google Analytics sessions that complete a predefined goal - such as reaching a destination page, meeting a session duration threshold, or triggering a specific event sequence. It quantifies how effectively your site achieves its defined business objectives.

View metric

Funnel Analysis

Web Analytics

Metric Definition

Funnel analysis tracks user progression through defined conversion paths in Google Analytics - from initial landing through intermediate steps to final conversion. It identifies where users drop off at each stage, quantifying the conversion loss at every step and revealing the most impactful optimisation opportunities.

View metric

Content Performance Analysis

Web Analytics

Metric Definition

Content performance analysis evaluates how individual pages and content types perform in Google Analytics across engagement, conversion, and revenue metrics. It identifies which content drives meaningful outcomes and which attracts traffic without contributing to business goals.

View metric

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