I recently wrote a calculator which will tell you how many days it will take to run an A/B test to 90% significance. You just plug in 1. the number of pagevie

I recently wrote a calculator which will tell you how many days it will take to run an A/B test to 90% significance. You just plug in 1. the number of pageviews your page got in the last month 2. the number of conversions that resulted from those pageviews http://abtestcalculator.com http://abtestcalculator.com