Age Calculator
Enter your date of birth to find out your exact age in years, months, and days. You can also choose a different "age at" date to calculate your age on any day in the past or future.
About this Age Calculator
This age calculator works out exactly how old you are from your date of birth. Enter the day you were born and the tool instantly shows your age in years, months, and days, along with useful totals such as your age in months, weeks, days, and hours. By default it calculates your age as of today, but you can set any "age at" date to find out how old you were — or will be — on a specific day.
To use it, pick your date of birth from the first field. The second field is set to today's date automatically, but you can change it to any past or future date. Click Calculate Age to see the results, or Clear to start over. The calculation accounts for the different lengths of months and for leap years, so the day and month breakdown is accurate rather than an approximation.
People use age calculators for many reasons: checking an exact age for forms and applications, working out eligibility for age-based services, planning birthdays and anniversaries, or simply satisfying curiosity about how many days they have been alive. It is also handy for calculating the age of children in months, which is common for health and development milestones.
Note: Results are based on the calendar dates you enter and do not account for time zones or the exact time of day. For official or legal purposes, always confirm ages against birth records or the requirements of the organisation requesting the information.