Age Calculator

If someone asks your age, you simply give them a number of years. But in legal documentation, life insurance, medical pediatrics, and astrology, 'years' is not accurate enough. You need the exact chronological span.

Our Age Calculator does the heavy lifting, accounting for the complex irregularities of the Gregorian calendar. It perfectly calculates leap years, 31-day months, and 28-day months to give you an absolutely mathematically flawless result.

A fascinating way to use this tool is setting a future 'Target Date'. If you are writing a sci-fi novel set in the year 2085, you can instantly see exactly how old a character born today would be.

You can also use it to find out exactly how many days you have been alive on earth (like celebrating your 10,000th day alive instead of a standard birthday), or precisely how many weekends are left until you reach retirement age.

Age is the time between a date of birth and a chosen date, counted in whole years, then remaining months and days. This matters for exam and job eligibility, where a cut-off date decides whether you qualify. Calculate against the official cut-off date from the notification, not today's date.

People born on 29 February have a birthday only in leap years, and rules differ on whether it is treated as 28 February or 1 March in non-leap years, so check the rule that applies to your form. For legal and official purposes, always rely on the age shown on your certificates. If you are planning ahead financially, try the SIP Calculator to see what starting early can do.