How age is calculated
We count full years between the two dates, then the remaining full months, then the leftover days, borrowing days from the previous month when needed. This matches how age is calculated for official forms, school admissions and exams.
Where you'll need an exact age
- Government job and exam eligibility (age as on a cut-off date)
- School admission age limits
- Insurance, pension and retirement planning
- Passport, visa and ID applications
Tip: change the "Age on this date" field to check your age on an exam's cut-off date.
Frequently asked questions
How do I calculate age on a specific date?
Set your date of birth, then change the 'Age on this date' field to the cut-off date you need. The result updates instantly.
How are leap-year birthdays handled?
If you were born on 29 February, your birthday in non-leap years is counted from 1 March.
Is my date of birth stored?
No. Everything is calculated in your browser and nothing is sent to our servers.