Days Since Birthday
How many days since my last birthday?
Days elapsed since the most recent one, how far through the year you are, and the total days you have been alive.
How this is worked out
- Days remaining assumes a 365-day year. When a 29 February falls before your next birthday, add one.
Questions people ask
The things that come up about days since birthdays, answered plainly.
How many days have I been alive?
The total is on the page, leap days included. Ten thousand days arrives at about 27 years and four months, which is a milestone worth marking precisely because nobody expects it.
How is a 29 February birthday counted?
In a year without 29 February, the page takes 1 March as your birthday. So in most years the count starts again on 1 March. In a leap year it starts again on 29 February.
Does my birth time change the count?
No. Every figure here counts whole calendar days in the time zone you pick. A birth time only matters for an age to the second, which the exact age calculator gives.
Related tools
Exact ages, next birthdays, anniversaries and the odder age scales.