Digital marketing calculators
A/B Test Duration.
Estimate a practical test duration by combining the two-proportion sample-size approximation with total daily visitors and variant count.
Browser-based tool
Use A/B duration
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01 / use the tool
How to use A/B duration
- Enter the values you know in the form.
- Run the tool and review the result alongside the notes below.
02 / interpret the output
What the result means
The estimate divides the required sample per variant by daily visitors per variant.
Important considerations
- The result assumes traffic is evenly distributed and stable.
- Allow for ramp-up, day-of-week effects and decision rules.
Worked example
Use a small, realistic example first so you can see how the output changes when one input changes.
03 / continue working
Related tools
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04 / relevant support
Need help applying the result?
The tool is a useful starting point. Website-Me can help connect the next step to the wider site, SEO or GEO work.