Online utilities for calculations, data analysis, and hypothesis testing in product analytics.
Calculate the required sample size
Perform a statistical chi-square test
Compare the means of two samples
Calculate SRM (Sample Ratio Mismatch) for A/B testing
Calculate Sample Size for Sequential Testing in A/B Tests
Test and validate regular expressions
Convert timestamps between different formats
Decode URL-encoded strings
Create QR codes for various data
Create UTM tags to track marketing campaigns
Manage your time efficiently using the Pomodoro technique
Check URL redirects and see where they lead
Open multiple links at once with a single click