Age Calculator

Our free online age calculator tells you your exact age down to the day. Enter your date of birth and it instantly calculates how many years, months, and days old you are, along with the total number of days you have been alive. It is the perfect tool for birthdays, milestone tracking, retirement planning, and school or work applications that ask for your precise age. The calculator works out the exact difference between your birthday and today (or any date you choose), accounting for leap years, so the result is always accurate to the day. You can also use the "date on" field to find out how old you were on a specific past date — useful for verifying age for records, anniversaries, or historical events. Everything runs in your browser, so your date of birth is never sent to a server, stored, or shared. There is no sign-up and nothing to install. Type in your date and get an answer in a fraction of a second. Whether you are figuring out your age in dog years, checking when your child turns 18, or tracking your own milestones, this age calculator gives you a precise answer every time, on any device.