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We compute the exact difference between two dates of birth in years, months, weeks, and days — fully accounting for leap years and varying month lengths. The result is precise to the day.
There is no universal rule. Research suggests most couples have a gap of 1–3 years, but many happy long-lasting relationships exist with much larger differences. Mutual respect and shared values matter far more than age.
The tool compares exactly two people at a time. For a group, run separate comparisons for each pair — e.g. A vs B, then A vs C.
Each person's Western zodiac sign based on their date of birth, plus the sign's element (Fire, Earth, Air, or Water) and key personality traits. It's fun — not scientific.
Standard generational ranges: Silent Gen (1928–1945), Baby Boomers (1946–1964), Gen X (1965–1980), Millennials (1981–1996), Gen Z (1997–2012), Gen Alpha (2013+).
Never. All calculations run entirely in your browser. No personal data is ever sent to our servers or stored anywhere.
Absolutely — the tool works for any two people: couples, siblings, friends, coworkers, parent and child, or even historical figures.
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