About the Age Calculator
Application forms rarely ask how old you are today. They ask for your age as on a particular date — 1 July for one examination, 1 January for a recruitment notice, the date of application for a loan or a government scheme. This calculator gives the completed years, months and days between a date of birth and any reference date you choose.
That matters for business owners as well as students. Several schemes and loans carry an age band for the applicant, insurance and pension products price by age, and employers need exact ages for retirement and gratuity records. Entering the cut-off date printed in the notification avoids the common mistake of counting age as of today and being a few days out.
The calculation handles months of different lengths and leap years properly. It counts whole months first and then the remaining days, the same convention used by standard date libraries. It also shows the total number of months, weeks and days lived, the weekday of birth and the number of days to the next birthday.
How to use it
- 1Select the date of birth from the calendar, or type it in.
- 2Leave the second date blank to use today, or enter the cut-off date given in your form or notification.
- 3Read the age in completed years, months and days, along with total months, weeks and days.
- 4Check the next birthday line to see how many days remain and the age you will turn.
How this is calculated
Count the whole months from the date of birth to the reference date; if the day of the month has not yet been reached, take one month back and count the leftover days from that monthly anniversary. Years = whole months ÷ 12, months = the remainder, days = the days left over. Total days = the simple count of calendar days between the two dates.
Frequently asked questions
How is age as on a cut-off date calculated?
Age is counted in completed years, months and days from the date of birth up to the cut-off date named in the notification. A person born on 15 August 1995 is 30 years, 10 months and 16 days old as on 1 July 2026. Enter the cut-off date in the second box to get this figure.
How are leap years and different month lengths handled?
The calculator counts whole calendar months first and then the remaining days, so it never assumes a fixed 30-day month or a 365-day year. From 31 January to 1 March is one month and one day, whether or not February has 29 days, and the total-days figure always includes every leap day in between.
I was born on 29 February. When is my birthday in other years?
In a year without 29 February, your completed age goes up on 1 March, so that is the date this tool shows as your next birthday. Some institutions treat 28 February as the birthday instead. Where an exact legal age matters, follow the rule stated by the authority concerned.
Why does my age differ by a day on another website?
Small differences come from whether the end date itself is counted and from how a month is borrowed when the days do not line up. This tool counts completed days up to, but not including, the reference date, and borrows calendar months. Official forms follow their own stated rule, which always prevails.
Can I use this for retirement, scheme or exam eligibility?
Yes, as a quick check. Enter the date on which eligibility is tested and compare the result with the minimum and maximum age in the notification. For relaxations, rounding rules and proof of age, the text of the scheme or recruitment notice is final, so read that alongside the number shown here.