Free Age Calculator Online – Calculate Your Exact Age
Enter a date of birth and get your exact age in years, months, weeks, days, hours, minutes and seconds. It takes one click and works for any date.
How does this age calculator work?
Type your birth date in the first box. The second box already holds today's date, but you can change it to any day you like, past or future. Press Calculate and the tool compares the two dates. Your age appears as whole years first, then total months, weeks, days, hours, minutes and seconds lived up to that date.
Years, months and days follow the normal calendar, so leap years and months of different lengths are handled for you. The larger totals (weeks, hours, minutes, seconds) count the full time between the two dates.
Why people check their exact age
Most of us know our age in years and nothing more. Yet forms and applications often want more detail. School admissions look at age on a fixed cut-off date. Government job notices set a maximum age on the closing day. Passport, visa and insurance paperwork can ask for age in years and months. Parents also like to track a baby's growth in weeks and months, because a child's first year moves fast.
Others just enjoy the numbers. Finding out you have lived more than a billion seconds, or ten thousand days, makes a nice birthday story to share.
Example: age in days, weeks and months
| Age | Approx. months | Approx. weeks | Approx. days |
|---|---|---|---|
| 5 years | 60 | 260 | 1,826 |
| 18 years | 216 | 939 | 6,574 |
| 30 years | 360 | 1,565 | 10,957 |
| 60 years | 720 | 3,130 | 21,915 |
These figures are rounded. Use the calculator above for your own exact result.
How to calculate your age by hand
Subtract your birth year from the current year. If your birthday has not come yet this year, take away one. For the extra months and days, count forward from your last birthday to today. Doing this by hand is slow and mistakes are common around leap days, which is why a calculator is handy.
Date of birth calculator tips
Check your age on a future date
Change the second date to a deadline, such as an exam registration or job application closing day. You will see your exact age on that day.
Find the age of a child in months
Use the child's birth date and read the Months row. Doctors and nurseries often ask for it instead of years.
Calculate the gap between any two dates
The tool also works as a simple date difference calculator. Put the earlier date in the first box and the later date in the second.
Frequently asked questions
How old am I in days?
Enter your date of birth, leave the second date as today, and press Calculate. The Days row shows how many days you have lived.
Does the calculator count leap years?
Yes. Leap years are built into the calendar the browser uses, so the day totals stay correct.
Can I find my age on a past or future date?
Yes. Change the "Age at the date of" box to any date after your birth date.
Is my date of birth saved?
No. The calculation runs inside your browser. Nothing is sent to a server or stored.
Why is my result a little different from another site?
Some tools count hours and minutes from the current clock time, while others count from midnight. This one counts from the start of each date.