How do I calculate my exact age?

Enter your date of birth and the calculator will show your exact age in years, months and days, plus the total number of days, weeks and hours you have lived.

Can I calculate my age on a specific date?

Yes. Use the 'Calculate age on' field to set any reference date — past or future — and the tool will compute your age on that day.

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Age Calculator

Find out exactly how old you are in years, months, days, hours and minutes. Compare any two dates.

Age Calculator — How Old Am I?

Date of birth

Calculate age on

Enter your date of birth to calculate your age

Years

Months

Days

Total days lived —

Total weeks lived —

Total months lived —

Total hours lived —

Next birthday

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Zodiac sign

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Born on a

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How to calculate your exact age

To find out exactly how old you are, enter your date of birth. The calculator computes the difference between your birthday and today (or any other reference date you choose) in years, months and days.

How many days old am I?

Multiply your age in years by 365.25 (accounting for leap years), then add the remaining months and days. For example: a person born on January 1, 2000 is approximately 9,130 days old in 2025.

Can I calculate my age on a past or future date?

Yes. Change the Calculate age on field to any date. This is useful to find out how old you were on a specific event, or how old you will be on a future date.

Frequently Asked Questions

How old am I if I was born in 2000?

In 2025 you would be 25 years old (or 24, depending on whether your birthday has passed this year). Use the calculator above for the exact answer.

What is my zodiac sign?

Your zodiac sign is determined by your birth month and day. The calculator shows your Western astrology sign automatically.

Step-by-step guide How to Calculate Age from Date of Birth — Guide →