Age Calculator

Enter a date of birth to see your exact age in years, months and days, how many days you have lived, the weekday you were born on and how long until your next birthday. You can also calculate age on any other date.

What this age calculator does

• Basic Age: exact age in years, months and days on today’s date or any date you choose, plus total days, hours, minutes and seconds lived, days to your next birthday, and the weekday, season and zodiac sign of your birth date.
• Life Analysis: compares your age with a rounded average life expectancy for the country and gender you pick, and shows which broad life stage you are in.
• Life Timeline: lays out the years to a retirement age you choose, with general planning prompts for each decade.

How the age is worked out

The calculator counts whole calendar years first, then months, then days, borrowing from the previous month when needed. Total days are counted between the two calendar dates, so daylight-saving changes do not add or remove a day.

Worked example: someone born on 15 January 2000 is 26 years, 9 months and 15 days old on 30 October 2026, which is 9,785 days, and their next birthday is 77 days later.

Things to keep in mind

The Life Analysis and Life Timeline tabs use rounded average life-expectancy figures and general planning ideas. They are illustrations, not predictions, and not medical or financial advice. Real life expectancy varies widely between individuals.

Frequently asked questions

Does it work for any date of birth?
Yes, for any date of birth that is not in the future. The date you enter stays in your browser and is not sent to this website.

Can I find my age on a past or future date?
Yes. Use the “Calculate Age On” field in the Basic Age tab.

Looking for more? See all our free health and fitness calculators.