What is an age calculator?
This age calculator gives a precise breakdown of how long you have been alive in years, months, and days. Enter your date of birth and see your current age, total days lived, next birthday countdown, and age in weeks, hours, and minutes. Useful for travel forms, contest eligibility, milestone celebrations, or curiosity.
How it works
We compare your date of birth to today's date. We subtract birth year from the current year, then adjust months and days (borrowing from the previous month when needed). Total days are computed from the difference in milliseconds between the two dates. Leap years are handled automatically by the calendar.
Uses for an age calculator
Typical uses include applications that require age verification, planning milestone birthdays (18, 21, 25, 30, 40, 50, 65), health or insurance forms, event eligibility (youth or masters categories), tracking infant age in months and days, visa or ticket age tiers, and the total-days figure as a fun fact to share on birthdays.
Privacy
All calculations run in your browser; no data is sent to a server. You can change or clear the date at any time. Safe to use for quick checks without storing personal information.