Age Calculator

What this age calculator tells you

Your age is easy to say in whole years and surprisingly fiddly to state exactly. Months have 28 to 31 days, leap years add a day every four years, and a recruitment notice rarely asks for your age today. It asks for your age "as on" a fixed cut-off date, such as 1 August of the exam year. This calculator counts the full years, then the full months, then the remaining days between your date of birth and the date you choose, and also shows the same span as total months, weeks and days, the date of your next birthday and the weekday you were born on.

How to use it

1. Enter your date of birth exactly as it appears on your birth certificate or Class 10 certificate.
2. Leave Age as on at today, or change it to the cut-off date printed in the exam notification or job advertisement.
3. Read the exact age at the top. Use Use today to switch back to the current date at any time.

How the age is counted

The tool finds the latest "month anniversary" of your birth that is not after the as-on date. The number of those anniversaries is your age in completed months; divided by 12 it gives completed years, and the remainder is the months. The days are then counted from that anniversary to the as-on date. When you were born on the 29th, 30th or 31st and a month is shorter, the anniversary falls on that month's last day, so someone born on 31 January has completed one month on 28 February (29 February in a leap year). Total days are a straight count of calendar days, and weeks are those days divided by seven.

A worked example with an exam cut-off date

Suppose you were born on 15 August 2003 (a Friday) and the notification says candidates must be within the age limit as on 1 August 2026. Your 23rd birthday is still 14 days away on that date, so you have completed 22 years and 11 months, and the days since your last month anniversary on 15 July 2026 are 17. The calculator shows 22 years, 11 months, 17 days. The same span is 275 months and 17 days, 1,198 weeks and 1 day, or 8,387 days in total. Notifications word their limits differently, for example "not less than 21 years" or "born on or after" a date, so compare the result with the exact wording in yours.

Birthdays on 29 February

If you were born on a leap day, the calendar only has your birthday once every four years. In common years this calculator treats 28 February as the day you complete another year, so your age changes on 28 February and the next birthday shown is 28 February. Some laws and organisations use 1 March instead. The difference is a single day, but for an exam with a hard cut-off it can matter, so read the rule in your notification or ask the recruiting body.

Limits and good practice

• The as-on date cannot be earlier than the date of birth; the tool tells you when it is.
• Exam boards decide how their own limits are read, including relaxations for reserved categories, ex-servicemen and persons with disabilities. This tool gives the arithmetic, not an eligibility decision.
• Everything runs in your browser, and the dates you type are not sent to Ur Next Door.
• Time of birth and time zones are ignored. Age is counted in whole calendar days, which is how forms and certificates use it.