Google AnalyticsWeb AnalyticsUser Acquisition Cost
User acquisition cost measures the average cost to acquire a new user to your website by combining Google Analytics traffic data with marketing spend data. It calculates the cost per new visitor or per converting user across channels to evaluate acquisition efficiency.
Google Analytics metric
User Acquisition Cost = Total Marketing Spend / New Users Acquired
User acquisition cost measures the average cost to acquire a new user to your website by combining Google Analytics traffic data with marketing spend data. It calculates the cost per new visitor or per converting user across channels to evaluate acquisition efficiency.
Full guide: definition, formula, and benchmarksHow to calculate User Acquisition Cost
User Acquisition Cost = Total Marketing Spend / New Users Acquired
Why User Acquisition Cost matters for Google Analytics users
Knowing how much traffic you get is useful. Knowing how much you pay for each visitor is essential. User acquisition cost varies dramatically by channel, campaign, and audience - and understanding these differences determines how you allocate your marketing budget.
Mapping acquisition cost into your metric tree alongside conversion and revenue metrics reveals the true cost of each customer. Channels that appear expensive on a cost-per-visitor basis may be cheap on a cost-per-conversion basis, and vice versa.
Driver
Conversion rate
Outcome · 58% contribution
Revenue
Understand and act on User Acquisition Cost with KPI Tree
KPI Tree connects GA4 user data with marketing spend from your warehouse. Define acquisition cost metrics per channel and campaign and position them in your marketing efficiency tree.
Assign RACI ownership to your marketing director. Set alerts when acquisition costs exceed target thresholds and track optimisation actions aimed at improving cost efficiency per channel.
Get started with your Google Analytics data
MCPPull metrics from Google Analytics directly through the Model Context Protocol.
Connect your existing warehouse where Google Analytics data already lands.
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 Ready to add to your trees.
Campaign Performance ROI
Web AnalyticsCampaign ROI = ((Campaign Revenue - Campaign Cost) / Campaign Cost) x 100
Campaign performance ROI measures the return on investment for marketing campaigns tracked in Google Analytics by comparing attributed revenue or conversion value against campaign costs. It evaluates the financial effectiveness of campaigns across all channels - paid, email, social, and referral.
View metricConversion Rate
Web AnalyticsConversion 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 metricTraffic Source Analysis
Web AnalyticsTraffic source analysis examines how different acquisition channels - organic search, paid search, direct, referral, social, and email - contribute to sessions, engagement, and conversions in Google Analytics. It evaluates channel quality beyond volume by connecting source-level metrics to downstream outcomes.
View metricAttribution Modelling
Web AnalyticsAttribution modelling assigns credit for conversions to the marketing channels and touchpoints that contributed to them within Google Analytics. It evaluates how different models - last-click, first-click, linear, time-decay, and data-driven - change the perceived value of each channel in your acquisition mix.
View metricNew User Rate
Web AnalyticsNew User Rate = (New Users / Total Users) x 100
New user rate measures the percentage of Google Analytics users who are visiting your site for the first time within a given period. It indicates the balance between acquisition of new audiences and retention of existing ones, revealing the composition of your traffic.
View metricExplore User Acquisition Cost across integrations
All Google Analytics metrics
Attribution ModellingAudience SegmentationBounce RateCampaign Performance ROICohort AnalysisContent Performance AnalysisConversion RateCustom Event Conversion RateEvent Tracking RateExit RateFunnel AnalysisGeographic PerformanceGoal Completion RateMobile vs Desktop PerformanceNew User RatePage Load Time ImpactPages per SessionReal-Time MonitoringReturn Visitor RateSearch Query PerformanceSession DurationTime-Based Trend AnalysisTraffic Source AnalysisUser Flow AnalysisEmpower your team to understand and act on Google Analytics data
Map what drives your metrics, measure progress at any grain, prove what works statistically, and deliver personalised action plans to every team member.
