Age Calculator.
Your exact age in years, months, days, hours and seconds lived. Plus next-birthday countdown.
Enter your date of birth and get every way to measure your age: years + months + days, total days, total hours, total minutes. Plus days until your next birthday and which weekday it falls on this year.
- Age in years, months, days
- Total days, hours, minutes, seconds lived
- Days until next birthday
- Birth weekday
- Compare two dates (kids vs. parents age)
- Handles leap years correctly
- 01Exact legal age for paperwork
- 02Years of service or seniority
- 03Days until someone's birthday
- 04Gestational age in weeks and days
- 05Couple or marriage anniversaries
edad.util.ar
We're finishing this one. Landing will live at edad.util.ar.
How does it count leap years?
Native Date object with the full rule: every 4 years is leap, except those divisible by 100 unless also divisible by 400. So 2000 was leap, 1900 wasn't.
Does my age change when crossing time zones?
Dates are handled in your local time zone. Switching zones may shift age by a few hours but not days.
Useful for gestational age?
Yes. Enter the last-period or conception date and get weeks + days in the standard obstetric format.
Pre-1900 dates supported?
Yes, no problem. Works fine for genealogy.