Age Calculator

This free age calculator tells you your exact age in years, months and days from your date of birth. Working out an exact age by hand is harder than it looks. Months have different lengths, leap years add an extra day every four years, and nobody wants to figure out 'how old am I in days?' on paper. Enter a birth date and the calculator handles all of it, showing your age properly broken down, 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. Hitting 10,000 days is a popular one to celebrate.
4. See the countdown to your next birthday, with leap years handled correctly.
5. Change the date freely to calculate someone else's age: a family member, a historical figure, even a pet.
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. Saying 'about 34' is easy. Getting to '34 years, 7 months and 12 days' means handling months of 28 to 31 days and leap year rules correctly, which this tool does. 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 your device, and there is no form to submit or account to create. The extra outputs earn their keep too. Total days lived turns birthdays into more interesting milestones, and the next-birthday countdown helps you plan ahead. Speaking of planning, measure 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. School admission forms ask for a child's age in years and months at a cutoff date, baby milestones are tracked in months, and someone has to settle '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 a few days over a cutoff moves a player up a division. Genealogists calculate the ages of ancestors at marriage or emigration from old records. Clinic receptionists compute patient ages from dates of birth all day long. And plenty of people use it just for fun: finding the day they turn 10,000 days old, comparing exact ages with friends, or counting down to a big birthday.

Frequently asked questions