Email Open Rate Calculator
Calculate email open rate from opens and delivered emails.
Your inputs
Your inputs and files stay on your device.
Your result
A little input. A useful answer.
Enter your values and run the tool to see your result here.
How to use this tool
- Enter campaign values.
- Calculate locally.
- Review the result.
About Email Open Rate Calculator
Use Email Open Rate Calculator locally in your browser with your own campaign data.
Does this tool send my data anywhere?
No. Its calculation or transformation happens on your device.
Using Email Open Rate Calculator with the right inputs
Calculate email open rate from opens and delivered emails. Start by matching your task to the quantities and options shown below. The definitions of the inputs matter as much as the final number or transformed output; retain the original values so that you can repeat or check the result.
Inputs and options explained
- Opened emails: Enter the numeric value for this quantity using the units or scale shown in the label. The form indicates a minimum of 0.
- Delivered emails: Enter the numeric value for this quantity using the units or scale shown in the label. The form indicates a minimum of 0.
Example to try in this tool
Use the following sample values to see how the controls and result fit together. They are an illustration of the operation, not recommended values for your own situation.
- Opened emails: 10
- Delivered emails: 10
Select Calculate. The result begins with:
Email open rate
100%
Calculated locally.
This example records the tool’s output for those inputs. Check the method and assumptions against your own task before using a result; reproducing an example is not independent certification of the underlying model.
Interpretation and limitations
Use a consistent reporting period and attribution definition when entering marketing figures. Platform reports may count clicks, leads, conversions and revenue differently. A calculated metric describes the supplied data; it does not establish that a campaign caused an outcome.
Can I compare this number across platforms?
Only when the underlying definitions match. Check attribution windows, deduplication, included costs and the meaning of each event before comparing reported performance.
Before you use the output
- Choose the intended action: Calculate. Re-run the operation after changing an input or mode so that you are checking the updated result.
- Read the result label and any accompanying explanation. Keep the input values or source file with the output so that a later comparison uses the same assumptions.
- If a result looks unexpected, check units, separators and selected options first. Try a smaller example you can verify rather than repeatedly changing several settings at once.
Questions or a result that needs checking?
If you find a discrepancy, report a problem with Email Open Rate Calculator. Include a non-sensitive example, the selected options, the result you expected and the result shown. This makes the issue easier to reproduce. See About & privacy for how the site handles tool inputs.