Age in Weeks Calculator
See your exact age as a total number of weeks.
100% runs in your browser — no upload, no trackingDates are calculated with the standard Gregorian calendar. Results are estimates for general use, not legal or official records.
How it works
Age is measured the calendar way: we count full years, then remaining months, then days — not a simple divide by 365. Date differences use the exact number of midnights between two dates, so a leap year or a short month is handled correctly. Business-day counts loop through the range and drop Saturdays and Sundays. Enter your date of birth and read your exact age. The unit (days, weeks, months, hours) is set by the page you are on.
FAQ
How is age calculated?
Age uses the calendar method: full years, then remaining months, then days. It is not a simple divide by 365, so leap years and short months are handled correctly.
Does it skip weekends?
On the business-days tool, weekends are excluded. On other tools the count is every calendar day unless you tick the skip-weekends option.
Is my date uploaded?
No. All math runs in your browser; the dates you enter never leave your device.
How accurate is it?
It follows the standard Gregorian calendar. It is for general use, not for legal, payroll, or official records.