Enter your date of birth and get your exact age in years, months and days — plus total days lived, your birth weekday and your next birthday countdown.
Pick your date of birth above and your exact age appears here instantly.
Your exact age
Three quick steps — no account, no upload, nothing leaves your device.
Pick the day, month and year you were born using the date picker.
It is set to today automatically. Change it to check your age on any other date — past or future.
Your age in years, months and days appears instantly, with totals, your birth weekday and your next birthday countdown.
Quick answers about how the age calculation works.
The calculator counts full calendar years, then full months, then the remaining days between your birth date and the “age at” date. It uses real calendar arithmetic — correct month lengths and leap years — so the result matches how age is counted officially, not a rough days-divided-by-365 estimate.
Yes. Change the “Age at date” field to any date on or after your birth date — for example, to find out how old you will be when you graduate, retire, or on your next milestone birthday.
Leap-day birthdays are handled correctly. In years without a 29 February, your birthday is counted on 1 March for the next-birthday countdown, and your age still increases on the correct day.
It finds the next date on which your birthday falls, starting from the “age at” date, and counts the whole days until then. If that date is today, you will see a birthday message instead of a countdown.
Completely. The calculation runs entirely in your browser — your dates are never uploaded, stored, or shared. You can even use this page offline once it has loaded.