Discover how two people connect across the zodiac
Compare birthdays for romantic, family, friendship, or professional bonds and get a polished report you can share, print, or save.
Ready to compare two birth dates?
Enter two birthdays and a relationship type to get an easy-to-read compatibility report with printable details.
Frequently asked questions
The calculator uses a local zodiac engine and deterministic compatibility rules so the same dates always produce the same report.
How is zodiac compatibility calculated?
The calculator uses each person's zodiac sign, the elemental compatibility between those signs, a relationship modifier, and a deterministic score offset so the report stays consistent.
Is this scientific?
This report is for entertainment and cultural interest only. It is designed for fun exploration rather than scientific or clinical use.
Can family members check compatibility?
Yes. The app includes relationship types for parents and children, siblings, cousins, grandparents, colleagues, and more.
How is friendship different from romantic compatibility?
The relationship modifier changes the final score and the interpretation so friendship, love, and family bonds each have a tailored insight.
Can I share the result?
Yes. The report includes a copyable link, a downloadable image card, and print-friendly layout for sharing with others.
Is my date of birth stored?
No. The calculator runs locally in the browser and the data is only used to generate the current report and update the URL.