CalendarwiseHow your age in days is worked out
The calculator counts the real calendar days from the date of birth to the date you choose, which is today by default. Leap days are included. Change Age on this date to see how many days old someone was, or will be, on any other day.
For the same result in years, months and days, use the age calculator.
Common questions
How many days old am I?
Enter your date of birth. The big number at the top is the number of days you have been alive.
How many days old will I be on a future date?
Set Age on this date to that future day and read the days figure.
When will I be 10,000 days old?
Try different future dates in Age on this date until the number reaches 10,000. For most people it falls at about 27 years and 4 months old.
Is my date of birth saved?
No. The calculation runs in your browser and nothing is sent to a server.