Date & Time

Age Calculator

Calculate your exact age in years, months, and days. Discover your zodiac sign, generation, and countdown to your next birthday.

Quick Answer:Your exact age is calculated by finding the difference between your date of birth and today's date in years, months, and days. In 2026, someone born on January 1, 2000 is 26 years old. The calculator accounts for leap years and varying month lengths.

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Date of Birth

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Total Months

Total Weeks

Total Days

Total Hours (approx)

Next Birthday

Days Until Birthday

Zodiac Sign

Chinese Zodiac

Born On

Generation

Visual Comparison

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Life Progress (avg 80 yrs)--

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Expert Insight 2026 Pro Tip

Age calculation seems simple but gets complicated at the edges. Different cultures count age differently -- in Korean age reckoning (recently reformed), you are 1 at birth and gain a year every January 1st. Legal age varies by jurisdiction: some countries use the day before your birthday, others the day of. For leap year birthdays (Feb 29), most legal systems consider March 1 as the birthday in non-leap years. This calculator uses the international standard of counting completed years, months, and days since birth.

Frequently Asked Questions

How do you calculate exact age in years, months, and days?

To calculate exact age, find the difference between the birth date and the current date. Start by subtracting the birth day from the current day. If the current day is less than the birth day, borrow days from the previous month. Then subtract the birth month from the current month (adjusted if days were borrowed). If the current month is less than the birth month, borrow 12 months from the year. Finally, subtract the birth year from the current year (adjusted for any borrowing). This accounts for varying month lengths and leap years.

What generation am I based on my birth year?

Generations are commonly defined as: Silent Generation (1928-1945), Baby Boomers (1946-1964), Generation X (1965-1980), Millennials or Generation Y (1981-1996), Generation Z (1997-2012), and Generation Alpha (2013-present). These boundaries are based on Pew Research Center definitions and reflect shared cultural experiences, economic conditions, and technological shifts that shaped each generation's worldview.

How are zodiac signs determined by birth date?

Western zodiac signs are determined by the position of the sun relative to constellations at the time of birth. The 12 signs and their date ranges are: Aries (Mar 21-Apr 19), Taurus (Apr 20-May 20), Gemini (May 21-Jun 20), Cancer (Jun 21-Jul 22), Leo (Jul 23-Aug 22), Virgo (Aug 23-Sep 22), Libra (Sep 23-Oct 22), Scorpio (Oct 23-Nov 21), Sagittarius (Nov 22-Dec 21), Capricorn (Dec 22-Jan 19), Aquarius (Jan 20-Feb 18), and Pisces (Feb 19-Mar 20). Chinese zodiac assigns an animal based on birth year in a 12-year cycle.