Click-Through Rate (CTR)
The short answer · 9 words
In short
Percentage of impressions that resulted in a counted click.
Flow-alerta.cab (2026): Click-Through Rate (CTR). https://flow-alerta.cab/en/glossar/click-through-rate-ctr. Editorially reviewed on: 10 October 2026.
How much detail would you like?
Practical
Relevant for ads, search results, emails and clickable content. It helps assess message and relevance, but must be considered along with conversion and cost.
Two ads are compared in the same channel, time period, and audience context; in addition to the CTR, the team checks conversion rate, cost per qualified request, and revenue.
Document channel, time period, click type and denominator; evaluate CTR only within meaningful comparable groups and connect it with downstream quality and economic indicators.
At a glance
- Core
- The CTR is calculated as clicks divided by impressions times 100 percent. What counts as click and impression depends on the channel and measurement system. The metric shows a tendency to click, not automatically lead quality, sales or profitability.
- Use
- Relevant for ads, search results, emails and clickable content. It helps assess message and relevance, but must be considered along with conversion and cost.
- Example
- Two ads are compared in the same channel, time period, and audience context; in addition to the CTR, the team checks conversion rate, cost per qualified request, and revenue.
- Limits
- Confuse CTR with conversion rate, engagement rate or click-to-open rate; compare different formats and placements; over-interpret small samples; ignore multiple clicks and invalid traffic; output high CTR as business success.
In context
Questions about this term
What is the formula?
Clicks ÷ Impressions × 100%.
Is a high CTR always good?
No.
Is there a universal target value?
No, channel, format, target group and target decide.
All details and background
The CTR is calculated as clicks divided by impressions times 100 percent. What counts as click and impression depends on the channel and measurement system. The metric shows a tendency to click, not automatically lead quality, sales or profitability.
ELI5 – Explained simply
If an ad is displayed 1,000 times and clicked 30 times, the CTR is 3 percent.
Why it matters in practice
Relevant for ads, search results, emails and clickable content. It helps assess message and relevance, but must be considered along with conversion and cost.
Example
Two ads are compared in the same channel, time period, and audience context; in addition to the CTR, the team checks conversion rate, cost per qualified request, and revenue.
Pitfalls and limits
- Confuse CTR with conversion rate, engagement rate or click-to-open rate; compare different formats and placements; over-interpret small samples; ignore multiple clicks and invalid traffic; output high CTR as business success.
Origin & history
With digital advertising and web analytics, the click-through rate became a standard metric. Definitions and counting differ between advertising, email and analytics systems.
Use in mid-sized companies
- Document channel, time period, click type and denominator; evaluate CTR only within meaningful comparable groups and connect it with downstream quality and economic indicators.
Related terms
- Impression
- Click
- Conversion Rate
- Click-to-Open Rate
- CPC
- Landing page
- Test A/B
Matching Flow-alerta service
Visibility in search & AIAI Visibility & Content – Evaluating Search and Campaign Performance in the Appropriate ContextMatching tool / use case
View use casesTool: Google Ads or Search Console; Use Case: Compare two ads or search hits with downstream conversion checkSources
- support.google.comGoogle Ads-Hilfe, Klickrate (CTR)
- support.google.comGoogle Ads-Hilfe, Klick
Quellenprüfung: 10.10.2026. Definition und dokumentierte Einordnung abgeglichen; Beispiele beschreiben mögliche Anwendungen.
Editorially reviewed on: