Age Calculator

About the Age Calculator

The Age Calculator works out exact age from a date of birth in years, months and days. It gives your age today or on any date you choose, which is useful when a form asks for “age as on” a cut-off date. It also shows total months, weeks, days and approximate hours lived, the day of the week you were born, and how many days remain until your next birthday.

People use it to check eligibility for jobs, exams, scholarships, school admission and visas with age limits, to fill in forms accurately, and simply out of curiosity. Parents use it for children’s milestones and HR staff to confirm a candidate’s age on a closing date. It handles leap years automatically, needs no sign-up and runs entirely in your browser.

How is exact age calculated?

Exact age is counted in calendar units, the way people and official forms count it, rather than by dividing days by 365. First the calculator counts how many full years have passed since the date of birth. Then it counts the full months after the last birthday, and finally the remaining days. When the day of the month on the target date is earlier than the birth day, it “borrows” the number of days in the previous month, just as you would when subtracting dates by hand.

This matters because months have 28 to 31 days and leap years add 29 February every four years (except most century years). A person born on 31 January is not a month older on 28 February; the calculator handles these cases correctly. People born on 29 February have their birthday counted on 28 February in years without a 29 February, which is the usual convention, though some legal systems use 1 March instead.

How to use the Age Calculator

1. Enter the Date of birth using the date picker or by typing it.
2. Leave Age on this date as today, or change it to the cut-off date in an advertisement or admission notice.
3. Read the exact age in years, months and days in the large result.
4. Check the line underneath for the weekday of birth and the number of days until the next birthday.
5. Use the statistics for total months, weeks, days and approximate hours. Copy result copies everything; Reset restores the defaults.

If the date of birth is after the second date, the calculator shows an error instead of a negative age.

Key features and benefits

• Exact calendar age. Years, months and days, calculated the way forms and institutions count age
• Age on any date. Check eligibility against a closing date or cut-off date, past or future
• Totals. Total months, weeks, days and approximate hours lived
• Birthday details. The weekday you were born on and a countdown to your next birthday
• Leap-year aware. Correct results for 29 February birthdays and for months of different lengths
• Private. Your date of birth is used only in your browser and is never stored or sent

Practical examples

Age today

Date of birth 15 January 2000, age on 15 November 2026: exactly 26 years, 10 months, 0 days. That is 322 months, 1,400 weeks or 9,801 days. You were born on a Saturday, and your next birthday is in 61 days.

Job advertisement age limit

An advertisement sets an upper age limit of 30 years “as on 31 December 2026”. A candidate born on 5 March 1996 enters 2026-12-31 as the second date and gets 30 years, 9 months, 26 days. They are over 30 years on the cut-off date, so they are eligible only if the advertisement allows an age relaxation.

School admission

A school requires children to be at least 5 years old on 1 August 2026. A child born on 10 April 2021 is 5 years, 3 months and 22 days old on that date, so meets the requirement.

Leap-year birthday

Someone born on 29 February 2004 is counted as having a birthday on 28 February 2027, so on that date they turn 23.

Age of a business or document

The calculator works for any start date, not just birthdays. A company registered on 1 July 2015 is 10 years, 11 months and 29 days old on 30 June 2026, just short of its 11th anniversary. This is useful for supplier forms asking how long a business has operated, or for checking whether a document or certificate is older than a required limit.

Common use cases

• Job seekers check upper and lower age limits on the closing date of an advertisement.
• Parents confirm school admission age and track children’s milestones.
• Students check age criteria for entry tests, scholarships and sports events.
• HR and admissions staff verify ages from documents quickly.
• Anyone curious about how many days old they are or which day of the week they were born.

Accuracy, limitations and privacy

Dates are handled as whole calendar days in Coordinated Universal Time, so daylight saving changes and your device’s time zone do not shift the result by a day. Time of birth is not considered. Total days are exact; total hours are an approximation (days × 24). The calculator follows the Gregorian calendar used for civil dates in Pakistan and most of the world.

Your date of birth never leaves your device and is not saved; refreshing the page clears it.

• Some institutions count age differently, for example treating a 29 February birthday as 1 March, or using “completed years” only. Follow the rule in the official notice.
• Hijri (Islamic calendar) age is not calculated; use the Hijri date converter to convert dates first.
• Dates before the year 1 or far in the future are not supported by the date picker.

Tips and best practices

• For job and admission forms, always use the exact cut-off date in the notice, not today’s date.
• Write the age in the format the form asks for, usually years, months and days.
• Keep your CNIC, B-Form or birth certificate handy; official age is based on the date in those documents.
• For government jobs in Pakistan, the dedicated government job age calculator also considers age relaxation.
• Check the result twice if you are close to an age limit: one day can make the difference.

Related tools and next steps

To count days or business days between any two dates, use the Date Difference Calculator or Days Between Dates. For Pakistani job applications, the government job age calculator checks age limits with relaxation, and the retirement date calculator finds superannuation dates. Count down to a birthday with the Countdown Timer, or convert dates with the Hijri date converter.