CTOR Calculator
Measure the percentage of email openers who click an email link.
01 / YOUR INPUTS
02 / YOUR RESULT
Ready when you are
Enter your details and calculate to see your results.Your CTOR is:
How it works & examples
What is click-to-open rate (CTOR)?
CTOR measures how frequently an email open is associated with a click. It helps evaluate the content and call to action among recipients who opened an email.
How to use this tool
CTOR = clicks ÷ email opens × 100. For a recipient-level measure, use unique clickers and unique openers from the same email campaign and reporting window.
Example
120 unique clickers among 600 unique openers gives a CTOR of 20%.
Understanding your result
Do not mix total clicks with unique opens when comparing campaigns. Automated link checks and privacy-related open tracking can distort the inputs. CTOR is different from clicks divided by delivered emails.
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