Age Calculator — Age in Days
A view that leads with the running totals — exactly how many days, weeks, and months old you are, rather than the years-months-days breakdown. It is the answer to "how many days have I been alive" and to baby-milestone questions measured in weeks. The day total counts every calendar day including leap days, so it is precise to the day for any birth date.
Age calculation
Age
26 yr
26 years, 5 months, 14 days
Also equal to
Age is figured from whole calendar days, accounting for leap years and uneven month lengths. The birth date is processed in your browser and never stored.
When a single number beats years and months
Some questions want one running figure, not a breakdown. New-parent milestones are tracked in weeks; some official forms ask for age in completed months; "days alive" is a fun-fact and a planning figure for round-number celebrations like a 10,000-day birthday. This view keeps the day, week, and month totals front and centre.
Because the total counts actual calendar days, it already includes every leap day in the span — no separate adjustment is needed to get an exact number.
Questions
- How many days old am I?
- Enter your date of birth and the calculator shows the exact number of calendar days, including leap days, between then and today.
- How do I work out age in weeks for a baby?
- The tool reports total weeks directly. Enter the birth date and read the weeks figure, which divides the total days by seven.