Free tools
Small, fast tools for everyday analytics work. Everything runs in your browser, no signup required.
Campaigns
Free UTM Builder
Build clean, consistent UTM tracking links in seconds. Tag campaign source, medium, and name correctly so every visit shows up in the right report.
TestingA/B Test Significance Calculator
Check whether your A/B test result is statistically significant. Enter visitors and conversions for both variants and get the p-value, uplift, and a plain verdict.
TestingA/B Test Sample Size Calculator
Work out how many visitors each variant needs before you start an A/B test, based on your baseline conversion rate and the smallest uplift you care about.
MetricsBounce Rate Calculator
Calculate your bounce rate and engagement rate from sessions and single-page visits, and see how your number compares to typical ranges by site type.