Every tool, explained
Age Calculator is deliberately small. There is no feed, no social layer and no account. Below is exactly what each tool does, what you put in, and what you get back.
The core tool. Pick a date of birth and an end date — today by default, or any past or future date you choose — and the app returns a calendar-correct result rather than a rough division by 365.
Years, months, days
The headline figure, respecting real month lengths and leap days.
Lifetime totals
Total months, weeks, days, hours, minutes and seconds lived.
Next birthday
Days remaining, the weekday it falls on, and the age you will turn.
Day of birth
Which day of the week the birth date landed on.
Why the end date matters: official forms often ask for your age as of a cut-off date rather than today. Change the second date and the whole result recalculates for that day.
Take a selfie with the camera or choose an existing photo from your gallery, and the app returns an estimated age range for the detected face. It is a party trick, and the app says so plainly on screen.
Entertainment only. Estimates shift with lighting, angle, expression, make-up, glasses and camera quality. Do not use this tool for identity checks, age verification, legal, medical or employment decisions.
Enter two birth dates and, if you like, two names. The result shows the gap in years, months and days, along with total days and total weeks, and clearly labels which person is older.
Named comparison
Optional names appear in the result so it reads like a sentence, not a puzzle.
Older / younger
Both dates are restated side by side and sorted, so there is no ambiguity.
Total days and weeks
Useful for twins, siblings and cousins born close together.
Save or share
Keep the comparison in history or send it as a clean result image.
Common uses: sibling gaps, comparing a couple's ages, checking a class year difference, or working out how much older a colleague is for a milestone celebration.
Type any year and find out whether it has 366 days. The app shows which part of the Gregorian rule applies, how many days that February holds, and the nearest leap years on either side.
That is why 1900 was not a leap year but 2000 was. If you were born on 29 February, this tool pairs with the leap-day birthday setting described below.
Start from any date, choose a direction, and move by days, weeks, months or years. The result is a real calendar date with its weekday, not an approximation.
Month arithmetic clamps sensibly: adding one month to 31 January lands on the last day of February rather than spilling into March.
The Friends & Family section is a private address book of dates. Add a person or an event, and the app schedules a local notification on the right day every year.
Name and date
Required. Everything else is optional.
Type
Birthday, anniversary or other — used for filtering later.
Relationship
Mother, cousin, colleague — whatever helps you recognise the entry.
Note
Gift ideas, ring sizes, the restaurant they liked.
Ringtone
Beep
Vibration
Set a default reminder time — 09:00 out of the box — and override it per entry. The list also shows a live countdown, so you can see at a glance that a birthday is 17 days away.
Around the tools
Recent results are kept locally so you can look one up again. Automatic saving is a toggle in Settings, and you can clear the list whenever you want.
Turn any result into a tidy image for chat or social apps. Sharing & export settings control the image format and how much detail it includes.
Follow the system theme or pin light or dark. Date display format is configurable too — dd MMM yyyy by default.
Choose which metrics appear in results, and decide how a 29 February birthday is treated in non-leap years — 28 February or 1 March.
In-app guidance for granting notification permission and exact-alarm access, plus battery optimisation tips so reminders fire on time.
See what is stored locally and clear it in one place. Read the full privacy policy for details.
The FAQ covers accuracy, permissions, reminders, privacy and troubleshooting in detail.
