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A domain age calculator turns a registration date into an exact age in years, months and days, counted from the calendar rather than a flat 365 day estimate. Enter the domain's creation date, usually found through a WHOIS lookup, and an as-of date to check the age on.
Look up the domain in a WHOIS lookup tool, such as your registrar's WHOIS search or a public WHOIS lookup site, and find the field labeled Creation Date or Registered On. Paste that date into the registration date field above. This calculator runs entirely in your browser without a server component, so it cannot query WHOIS records itself; it only does the date math once you supply the date.
Google has repeatedly said domain age itself is not a ranking factor, and older discussions of a domain age patent were never confirmed to reflect anything actually used in ranking. What correlates with rankings is usually the backlinks, content and trust an older domain has had more time to accumulate, which is a side effect of age rather than age itself doing the work.
The calculator counts full calendar years, months and remaining days between the two dates you enter, borrowing from the previous month or year the same way a manual date subtraction would, so it correctly accounts for different month lengths and leap years rather than dividing total days by a flat 365. Buyers and sellers in the domain marketplace, and anyone auditing a site's Search Console history, often need this exact figure rather than a rough estimate.
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