AdSense CTR Calculator
Turn clicks and impressions into a click-through rate percentage.
Click-through rate, or CTR, is the share of ad impressions that turn into clicks. Enter your total clicks and total impressions and this tool shows the percentage right away, with a colour cue for whether it is high, typical, or low. It is an unofficial calculator, not affiliated with Google or AdSense, and it runs entirely in your browser.
The formula
CTR is clicks divided by impressions, expressed as a percentage:
CTR = (clicks ÷ impressions) × 100
For example, 150 clicks from 5,000 impressions is (150 ÷ 5,000) × 100 = 3.00%. The result is shown to two decimal places. If impressions are zero the tool holds at 0.00%, because there is nothing to divide by.
Reading the colour cue
The figure changes colour as a quick gauge: above 5% shows green, between 1% and 5% uses the default accent, and below 1% turns red. These bands are only a rough visual hint. What counts as a strong CTR varies a great deal by ad format, placement, topic, and audience, so compare against your own history rather than a single benchmark.
Using it well
The clicks and impressions you enter are your own reported figures, so the accuracy of the result depends on the numbers you feed in. Pull both from the same date range and the same report to keep the comparison honest. A very high CTR is not always good news; unusually high rates can signal accidental or invalid clicks, which is worth checking.
Frequently Asked Questions
Is this an official Google or AdSense tool?
No. It is an unofficial calculator with no affiliation to Google. It simply applies the standard CTR formula to figures you provide.
What is a good CTR?
There is no single answer; it depends on format, placement, and audience. The colour cue is a rough guide, so compare against your own past performance.
What if impressions are zero?
The result stays at 0.00%, because a click-through rate cannot be worked out without impressions to divide by.
Does this calculator store my data?
No. Everything runs in your browser and nothing is uploaded or saved.