About the Age Calculator
Need your exact age for a form or exam eligibility? Enter your date of birth and see your age in years, months and days on today’s date or any other date.
How to use the Age Calculator
- Enter your date of birth.
- Keep today’s date or choose another “age on” date (useful for exam cut-off dates).
- Read your exact age and total days lived.
- See how many days are left until your next birthday.
Formula used
Age = the number of complete years, then complete months, then remaining days between the date of birth and the chosen date.
Frequently asked questions
How do I calculate age for exam eligibility?
Set the “age on” date to the cut-off date in the exam notification, for example 1 August of the exam year.
What if I was born on 29 February?
Your birthday is counted on 28 February or 1 March in non-leap years, depending on the rules being used.
Is this calculator accurate?
Yes, it uses calendar months and days, including leap years.
Last reviewed: November 7, 2026