Age Calculator

How age is calculated

Your age is the number of completed years since your birth date, followed by completed months and the remaining days. The calculator counts forward from your birth date: first whole years, then whole months, then days. For months that don’t have your birth date (such as a 31st), the anniversary is treated as the last day of that month. People born on 29 February complete a year on 28 February in non-leap years.

More than just years

You also get your age in total months, weeks, days and hours, fun for milestones like your 10,000th day, useful for baby age tracking, and needed for some forms. The day of the week you were born on is shown too.

Your next birthday

The calculator shows the date of your next birthday and how many days are left, so you never miss planning a celebration.

Common uses

• Filling forms that ask for age in years and months.
• Checking eligibility for schools, sports categories, insurance or pensions.
• Tracking a baby’s or pet’s age in weeks or months.

Age for exams

Exams judge age on a specific cut-off date, not today. Use the age as on date calculator with your notification’s date, or check relaxation rules with the exam age limit checker. To find the gap between any two dates, see the date difference calculator.

Accuracy

Dates are handled in a way that avoids time-zone errors, so the result is the same wherever you are. Nothing you enter leaves your device.

Example

Someone born on 15 June 2000 is, on 26 September 2026, 26 years, 3 months and 11 days old: about 9,599 days, or more than 230,000 hours. Their next birthday is 15 June 2027. Enter your own date of birth to see your numbers.

The calculator never stores your date of birth.