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Email Click-to-Open Rate Calculator

Compare unique clickers with unique tracked openers.

Use a consistent reporting periodCheck the calculation below
Business dashboard
Business dashboard

Use figures from the same reporting period.

See the method

Enter your business figures

Runs on your device

Your key metric

Your result

Let’s calculate.

Use the Calculate button to see your result.

Review the method below for assumptions and conventions.

How to use this tool

  1. Enter unique clickers, unique openers.
  2. Select Calculate to view the result.
  3. Check the method and assumptions below before using the result.

Input reference and sample values

Use the units and choices shown for each field. Sample values are provided for practice, not as recommendations.

InputFormat and unitsSample
Unique clickersNumeric value. Zero or positive.50
Unique openersNumeric value. Must be greater than zero.250

Result for these sample inputs

20 %

Select Try the example in the form to load these values and calculate them again. This replaces the current form inputs. Compare the result with the method and worked explanation below.

The method, explained

CTOR = unique clickers/unique openers × 100%.

A WORKED EXAMPLE

Using unique clickers = 50, unique openers = 250, the result is 20 %. Change these example inputs to match your task; use the method above to check each step.

What to keep in mind

Tracking discrepancies can produce unusual ratios; this does not correct tracking data. Use consistent currencies, reporting periods and accounting definitions. This arithmetic estimate excludes items not entered in the form.

Methodology maintained by ClarityKit. How these tools are built and checked.