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Age Calculator
Age Calculator
Exact age, life milestones, zodiac signs & birthday countdown
0
Years Old
0 years, 0 months, 0 days
Months
0
Weeks
0
Days
0
Hours
0
Western Zodiac
Aries
Chinese Zodiac
Dragon
Life Progress (Based on 80-year estimate)
About the Age Calculator
Find your exact age in years, months and days, or work out how old someone will be on a future or past date. It is handy for forms, school admissions, birthdays, legal checks and family history.
How to use the Age Calculator
- Enter your Date of Birth.
- Leave Calculate As Of on today's date, or choose another date to see age on that day.
- Press Calculate to see your age in years, months and days. Use Copy Result to copy it or Reset to start again.
Formula and method
The calculator subtracts the birth date from the reference date using calendar rules: it counts complete years first, then remaining complete months, then remaining days, taking the length of each month and leap years into account.
Worked example
Born on 15 August 1995 and calculated on 10 September 2026: 31 years, 0 months and 26 days.
Tips
- Set the "as of" date to a cut-off such as 1 April to check school or exam eligibility.
- A person born on 29 February is treated as having a birthday on 28 February or 1 March in non-leap years, depending on local law.
Frequently Asked Questions
From the date of birth to the chosen date, counting full years, then remaining full months, then days.
Yes. Change the Calculate As Of date to any date after your birth date.