Age Calculator: Date of Birth

How old am I, exactly? Age Calculator answers in one tap — in years, months and days, and with a live counter that ticks every second. Enter your date of birth and discover your exact age, your next birthday, fun facts about the day you were born, and much more.

It's more than an age calculator. You also get a complete set of date tools: date difference, add and subtract days, day of the week finder, countdowns and birthday reminders. All in one clean, modern app that works fully offline.

🎂 EXACT AGE CALCULATOR
• Your age in years, months and days, calculated precisely
• Calculate age on any date — past or future, not just today
• Live counter of the months, weeks, days, hours, minutes and seconds you've lived
• Next birthday countdown with the date, weekday and the age you'll turn

✨ FACTS ABOUT YOUR BIRTH DATE
• The day of the week you were born
• Zodiac sign and Chinese zodiac
• Birthstone and birth flower
• Your generation (Gen Z, Millennial, Gen X…)
• Day of the year and week number you were born
• Life milestones: 10,000 days old, 1 billion seconds, 1,000 weeks and more
• Your age on Mercury, Venus, Mars, Jupiter and Saturn
• Fun facts: heartbeats, breaths and full moons in your lifetime

📅 DATE CALCULATOR TOOLS
• Age difference — compare two birthdays and see who's older and by exactly how much
• Date difference — days between two dates, plus weeks, months, workdays and weekends
• Add & subtract dates — add or subtract years, months, weeks and days from any date
• Day finder — the weekday of any date, ISO week number, quarter, leap year and a month calendar
• Countdowns — live day, hour, minute and second timers for birthdays, holidays and your own events, with yearly repeat for anniversaries

👨‍👩‍👧 BIRTHDAY REMINDERS
• Save family, friends and colleagues with their birthdays
• See who's next, sorted by upcoming birthday
• Get a reminder on the day, or 1, 3 or 7 days before
• Optional milestone alerts, like the day someone turns 10,000 days old

🎨 BEAUTIFUL AND PERSONAL
• Modern, clean design with smooth rounded layouts
• Light mode, dark mode, or follow your system
• Choose your accent colour
• Date format of your choice: DD/MM/YYYY, MM/DD/YYYY or YYYY-MM-DD
• Pick the first day of the week: Monday, Sunday or Saturday

🔒 PRIVATE AND OFFLINE
• Every calculation happens on your device — no internet needed
• Your saved people and countdowns stay on your phone; no account, no sign-up
• Back up and restore your data to a file whenever you like

WHO IS IT FOR?
• Anyone who wants to know their exact age or calculate age from a date of birth
• Filling in forms that ask for age on a specific date
• Planning birthdays, anniversaries, trips and events
• Counting days between dates for work, school, projects, holidays or deadlines
• Curious minds who love fun facts about time

Age Calculator is free to use and supported by ads.

Download Age Calculator: Date of Birth and see how every day of your life adds up.