Productivity
Age Calculator
Calculate exact age in years, months, days, weeks, hours, minutes, and seconds, plus next birthday, weekday, zodiac, Chinese zodiac, and leap-year details.
About This Tool
Use this age calculator to find exact age between a birth date and target date. It also shows total weeks, days, hours, minutes, seconds, next birthday, birthday weekday, zodiac signs, and leap-year context.
Age Calculation Method
age = target date - birth date, adjusted by calendar months and daysThe calculator computes calendar years, months, and days first, then derives total days, weeks, hours, minutes, and seconds from the date difference.
Examples
Exact adult age
Birth date: 2000-01-01, Target date: 2026-07-09
Result: 26 years, 6 months, 8 days.
Birthday planning
Birth date and today's date
Result: Next birthday date and days remaining.
FAQ
Does this include the target day?
The total day count is the elapsed time from the birth date to the target date. The exact years, months, and days use calendar boundaries.
How are leap day birthdays handled?
For February 29 birthdays in non-leap years, the next birthday is treated as February 28 for display.
Are zodiac signs medical or scientific advice?
No. Zodiac and Chinese zodiac details are included as cultural and informational extras.