About
Citizenship Day Calculator is a free, open-source tool for people applying for citizenship to easily calculate their qualifying days. It works for 7+ countries in 16 languages, with all data staying in your browser.
Why this site exists
Citizenship applications have strict day-counting rules that vary by country. A single miscalculation can mean losing $1,000-$2,500 in fees and waiting another 6+ months. This tool does the math precisely, following the official government rule for each country.
Open source and free
The site is open source. No ads, tracking, user accounts or fees. Your data only stays in your browser.
Contact & Issues
Visit our GitHub repository to file issues, suggest improvements, or contribute translations.