Age Calculator

--Years
--Months
--Days
--Hours (approx.)
Day of Birth:
Next Birthday in:
Western Zodiac:
Chinese Zodiac:

How to Calculate Your Exact Age

Calculating your exact age is more than just subtracting the birth year from the current year. An accurate age calculation accounts for the month and day as well, determining whether your birthday has passed this calendar year. This tool goes further, computing your age in total months, total days, and approximate hours — useful for legal, medical, and curiosity purposes.

Why Exact Age Matters

Your precise age is relevant in many real-world contexts: retirement eligibility, school enrollment cutoffs, insurance policy terms, contract law (age of majority), pension calculations, and medical screening schedules. Knowing your exact age to the day can also help in historical research and genealogy.

Western Zodiac Signs

The Western zodiac system divides the year into 12 signs based on the position of the sun at the time of birth. Each sign spans roughly 30 days. The 12 signs 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

The Chinese zodiac follows a 12-year cycle, with each year represented by an animal. The twelve animals in order are: Rat, Ox, Tiger, Rabbit, Dragon, Snake, Horse, Goat, Monkey, Rooster, Dog, and Pig. Your Chinese zodiac animal is determined by your birth year.

Frequently Asked Questions

How is age calculated when the birthday hasn't occurred yet this year?
If your birthday this year is still in the future, you subtract one from the year difference. For example, if you were born in October 2000 and today is May 2026, you are 25, not 26, because your 2026 birthday hasn't happened yet.
What day of the week was I born on?
This calculator shows the weekday of your birth using the Tomohiko Sakamoto algorithm applied to your date of birth. Simply enter your date of birth and the result will display your birth day.
Can I calculate how old someone was on a specific date?
Yes. Use the "Calculate Age At" field to enter any past or future date. The calculator will show the exact age of the person on that specific date.
How many days old am I?
The exact number of days depends on your birth date and today's date, accounting for leap years. Use the calculator above to find your precise total day count.
How is the Chinese zodiac determined?
The Chinese zodiac animal is based on your birth year within a repeating 12-year cycle. Note that the Chinese New Year falls in late January or February each year, so if you were born in January or early February, your animal may be from the previous Western calendar year.