About age calculator
An age calculator turns a date of birth into exact years, months and days. It is useful for exam eligibility, forms and school admissions, where being a day over or under a cut-off can matter.
How age is counted
Age is the number of full years, then full months, then remaining days between the date of birth and a chosen date. Months have different lengths, so the day count is taken from the last completed month. Someone born on 29 February is counted as turning a year older on the last day of February in non-leap years for most administrative purposes, though rules can differ, so check the form's instructions.
Age as on a particular date
Recruitment notices and entrance exams usually fix an age cut-off date, such as 1 January of the year or the last date to apply. Set the "as on" date to that date, not today, to see whether you are eligible.
Things to double-check
- Whether the notice counts the cut-off date itself.
- Age relaxations for categories, which are listed in the official notification.
- The date of birth on your certificate, since that is the one authorities use.
