Birthday Age Calculator
Enter a birth date to see the exact age down to the day and how long until the next birthday. Then celebrate with a free personalized card.
What the age calculator does
The age calculator works out an exact age from a date of birth - not just the number of years, but the months and days on top, plus how long until the next birthday. Enter any birth date and you instantly see a precise age, which is handy for birthday planning, filling in forms, settling friendly debates, or just satisfying curiosity.
How to use it
- Enter the date of birth.
- The tool calculates the age in years, months, and days as of today.
- It also shows the countdown to the next birthday so you know how soon to celebrate.
- Ready to make it special? Create a free birthday card in a couple of minutes.
When an exact age comes in handy
- Milestone birthdays. Confirm exactly when someone turns 18, 21, 30, or 65 so the celebration lands on the right day.
- Baby and toddler ages. New parents often track age in months and weeks - this makes it effortless.
- Gift and card timing. Knowing the days until the next birthday helps you order and send with time to spare.
- Curiosity and trivia. Work out how many days you have been alive, or compare ages between friends and family.
Frequently asked questions
The tool compares the birth date to today, counts the full years, then the remaining months and days, and separately shows how long until the next birthday.
Yes. The calculation uses real calendar dates, so leap years and different month lengths are handled correctly.
No. The calculation happens in your browser for this tool and is not saved to your account or shared.
Absolutely. Any start date works - enter a pet adoption day or a wedding date to see the exact elapsed time.