QQuickKit

Age Calculator

Enter your birthdate to find your exact age in years, months and days. Also shows how many days until your next birthday.

About This Tool

Find out your exact age down to years, months and days — and discover how many days remain until your next birthday. QuickKit's age calculator works entirely in your browser; just pick a birthdate and get the result instantly. Useful for filling in forms, tracking milestones, or satisfying simple curiosity.

Features

  • ✓Exact Age — Breaks down your age into precise years, months and remaining days.
  • ✓Birthday Countdown — Shows the number of days until your next birthday.
  • ✓Date Picker — Browser-native date input makes entry fast on both desktop and mobile.
  • ✓Accurate Leap Year Handling — Correctly accounts for leap years and varying month lengths.

FAQ

How is the age calculated?
The calculator finds the difference between today's date and your birthdate, correctly handling month and day rollovers, leap years, and varying month lengths.
What if my birthday is today?
If you enter today's date, the birthday countdown will show 365 days (or 366 in a leap year) until the next occurrence.
Is the result based on local time?
Yes. The calculation uses your device's local date, so results reflect your timezone.

Further Reading