Age Calculator: Date of Birth

How old are you, exactly? Age Calculator answers instantly — and works completely offline.

Enter a birth date and get your age in years, months and days, with correct leap-year and February 29 handling. Then see how long until the next birthday, which weekday it falls on, and how many days you have been alive.

MAIN FEATURES

• Exact age in years, months and days
• Next birthday countdown, with the weekday it lands on
• Western zodiac sign and lunar zodiac animal
• Totals: months, weeks, days and hours lived, plus fun estimates
• Date difference: the distance between any two dates
• Life milestones: 10,000 days, 1 billion seconds, round-number ages
• Saved birthdays for family and friends, sorted by who is next
• Birthday reminders so you never forget again
• Lunar calendar: lunar birth date and sexagenary (stem-branch) pillars
• Light and dark themes
• 33 languages

WHY PEOPLE USE IT

Figure out a child's exact age for a school form. Check how many days until an anniversary. Count the days between two dates for a contract or a trip. Find out which weekday you were born on. Keep every family birthday in one place and get reminded before each one.

PRIVATE BY DESIGN

No account, no sign-up, no internet needed. Nothing you enter leaves your device. The app works on a plane, in a basement, anywhere.

REMOVE ADS

One optional in-app purchase removes all ads permanently. Everything else in the app is fully available to everyone, with no subscription and nothing behind a paywall.

Download Age Calculator and find out your exact age today.