Google Ads Metric
Paid Advertising
Click-Through Rate = (Clicks / Impressions) x 100
Click-through rate measures the percentage of Google Ads impressions that result in a click. It indicates how relevant and compelling your ads are to the audience seeing them, serving as a primary signal of ad-audience alignment and creative effectiveness.
Full guide: definition, formula, and benchmarksClick-Through Rate
Click-through rate measures the percentage of Google Ads impressions that result in a click. It indicates how relevant and compelling your ads are to the audience seeing them, serving as a primary signal of ad-audience alignment and creative effectiveness.
How to calculate click-through rate
Why click-through rate matters for Google Ads users
CTR is the bridge between visibility and engagement in paid search. A low CTR means your ads are being shown but not resonating - wasting impressions and potentially lowering quality score, which increases costs. A high CTR indicates strong ad-keyword-audience alignment.
Positioning CTR in your metric tree between impression metrics and conversion metrics reveals whether engagement or conversion is the bottleneck in your paid funnel. Statistical correlations show how CTR changes cascade through to cost per acquisition and revenue.
Understand and act on click-through rate with KPI Tree
KPI Tree syncs CTR data from your warehouse and positions it within your paid acquisition metric tree. Track CTR per campaign, ad group, keyword, and audience segment.
Assign RACI ownership to your paid search specialist. Set alerts when CTR drops below historical baselines and track optimisation actions such as ad copy changes, keyword refinements, and audience adjustments.
Get started with your Google Ads data
Pull metrics from Google Ads directly through the Model Context Protocol.
Connect your existing warehouse where Google Ads 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 Ads metrics
Quality Score
Paid AdvertisingMetric Definition
Quality score is Google Ads' rating of the overall quality and relevance of your keywords, ads, and landing pages. Scored from 1 to 10, it combines expected click-through rate, ad relevance, and landing page experience to influence your ad rank and actual cost per click.
Conversion Rate
Paid AdvertisingMetric Definition
Conversion Rate = (Conversions / Clicks) x 100
Conversion rate measures the percentage of Google Ads clicks that result in a defined conversion action - such as a purchase, signup, form submission, or phone call. It quantifies how effectively your ads and landing pages turn paid traffic into measurable business outcomes.
Cost per Click
Paid AdvertisingMetric Definition
Cost per Click = Total Ad Spend / Total Clicks
Cost per click measures the average amount paid for each click on a Google Ads advertisement. It reflects the competitive intensity of the keywords and audiences you target, the quality of your ads, and the effectiveness of your bidding strategy.
Impression Share
Paid AdvertisingMetric Definition
Impression Share = (Impressions Received / Total Eligible Impressions) x 100
Impression share measures the percentage of eligible impressions your Google Ads actually received compared to the total impressions available for your targeted keywords and audiences. It indicates your market coverage and competitive presence in the paid search landscape.
Ad Copy Testing Analysis
Paid AdvertisingMetric Definition
Ad copy testing analysis evaluates the performance differences between ad creative variants in Google Ads campaigns. It measures how headline, description, and call-to-action variations affect click-through rates, conversion rates, and cost efficiency to identify the most effective messaging for each audience.
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All Google Ads metrics
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