Duration Estimator
Estimate how long your experiment needs to run
Experiment Parameters
Configure your traffic and test settings
Average daily visitors to your experiment
5.0 %
Your current conversion rate
+5.0 %
Drag to see how MDE affects runtime
What-if: Smaller MDEs require more traffic and longer runtimes. Use the slider to find the sweet spot between sensitivity and practicality.
Power
Selected: 80
Estimated Runtime Acceptable
3 weeks, 4 days
A bit long, but still practical for most teams.
Start 1 week2 weeks 3 weeks, 4 days
Sample per Variant
122.1K
Total Sample
244.2K
Runtime by MDE
See how different effect sizes affect your experiment duration
+1%
85 weeks, 5 days
+3%
9 weeks, 5 days
+5%
← Selected
3 weeks, 4 days
+10%
1 week
+20%
2 days
Summary
Daily traffic 10,000
Baseline rate 5.0%
MDE +5.0% relative
Expected variant rate 5.25%
Power / Confidence 80% / 95%