🎂 Age Calculator

This free age calculator tells you your exact age in years, months and days from your date of birth — instantly and precisely. Working out an exact age by hand is harder than it looks: months have different lengths, leap years add a day every four years (usually), and 'how old am I in days?' is not something anyone wants to do on paper. Enter a birth date and this calculator handles all of it, showing your age broken down properly, the total number of days you have been alive, and how many days remain until your next birthday. It runs entirely in your browser, so the date you enter is never stored or sent anywhere. Use it for official forms, milestone planning, eligibility checks or plain curiosity.

How to use

1. Select your date of birth using the date picker — day, month and year.
2. Your exact age appears instantly, broken down into years, months and days.
3. Check the total days lived figure for milestone tracking — 10,000 days is a popular one to celebrate.
4. See the countdown to your next birthday, correctly accounting for leap years.
5. Change the date freely to calculate someone else's age — a family member, a historical figure, or a pet's birth date.
6. Nothing is saved between visits, so every calculation starts fresh and private.

Why use our age calculator?

The value of an age calculator is precision. 'About 34' is easy; '34 years, 7 months and 12 days' requires correctly handling months of 28-31 days and leap year rules — which this tool does exactly. That precision matters for immigration and visa forms that ask for age at a specific cutoff, for school enrollment deadlines, for pension and insurance paperwork, and for sports categories where eligibility can hinge on a single day.

It is also instant and private: the calculation runs locally, your birth date never leaves the device, and there is no form to submit or account to create. The extra outputs earn their place too — total days lived turns birthdays into more interesting milestones, and the next-birthday countdown helps you plan ahead. Speaking of planning: work out the gap between any two dates with the date difference calculator, put a scannable RSVP link on party invitations with the QR code generator, and keep the birthday speech the right length with the word counter.

Who is this tool for?

Parents use it constantly — for school admission forms that ask a child's age in years and months at a cutoff date, for tracking a baby's age in months, and for settling 'exactly how much older is she than her brother?' HR and admin staff verify ages for contracts, insurance and retirement paperwork, where an exact figure is required rather than a guess.

Sports coaches and clubs check age-category eligibility, where being days over a cutoff moves a player up a division. Genealogists and history enthusiasts calculate ages of ancestors at marriage, emigration or other events from record dates. Doctors' receptionists and clinics compute patient ages from dates of birth all day long. And plenty of people use it for fun: finding the day they turn 10,000 days old, comparing exact ages with friends, or counting down to a milestone birthday party.

Frequently asked questions