Help Center Reporting Ad Metrics

Click-Through Rate (CTR)

CTR measures the effectiveness of an advertisement. It is calculated using the following formula that involves the number of clicks and impressions:

CTR = (Clicks/Impressions) x 100

A high CTR means that it attracts attention and get clicks often. A low CTR means the ad is under-performing and should be evaluated further. Other similar terms include: response rate, click-thru ratio.


A 1.0% CTR means that for every 100 impressions, there is 1 click.
Click-Thru Rate Calculator

Gross CTR

Gross CTR = (Gross Clicks / Gross Impressions) x 100

Unique CTR

Unique CTR = (Unique Clicks / Unique Impressions) x 100

Monitoring CTR

You should measure each ad's CTR regularly and make appropriate changes to improve its CTR. An ad with a low CTR should be modified, or even removed from the rotation. An evaluation should be performed when an advertisement gets at least 1,000 impressions. If this impression threshold is met and it still has a low CTR, less than 0.1%, it should be checked for the use of headings, hot spots, an appropriate call to action and other effectiveness factors.

Other Articles in Ad Metrics

Ad performance is measured by the ad server including: impressions, clicks, CTR, conversions, events, revenue.

Cannot find an answer for your question? Ask our Customer Care team