Finance & CalculatorsOctober 13, 2026 2 min read

How to Calculate Age from Date of Birth (Years, Months and Days)

Work out exact age in years, months and days — including leap years — for forms, eligibility checks and exam cut-off dates.

Exam eligibility, job applications, insurance and school admissions often ask for your age on a specific date — "as on 1 January" for example — to the exact day. Counting by hand is error-prone.

How age is calculated

Subtract the birth year from the target year.
If the target date falls before this year's birthday, subtract one year.
Count the remaining months and days, taking the real number of days in each month into account.

Age Calculator

Calculate exact age in years, months and days — free.

Try it free

Common uses

Checking age limits for government and bank exams on the cut-off date
School and college admission forms
Insurance and pension plans
Planning milestones and birthdays

Leap years

People born on 29 February have a real birthday only every four years. Good calculators handle leap years correctly so the day count is right.

Frequently asked questions

How do I calculate my age on a specific date?

Enter your date of birth and the target date in the age calculator to get years, months and days.

Does it handle leap years?

Yes.

Is my date of birth stored?

No. The calculation runs in your browser.