Age Calculator
Enter your date of birth to see your exact age down to the day — the same way it is counted on official forms — along with your total days alive and a countdown to your next birthday.
How to use
- Pick your date of birth using the date field.
- Optionally change the "age at date" field to compute age at a past or future date (defaults to today).
- Your exact age, total months and total days are shown instantly.
Frequently asked questions
How is age calculated exactly?
The calculator counts full years first, then remaining full months, then remaining days — the same method used for official documents and school enrollment.
What about leap years?
Leap days are handled automatically using real calendar dates, so the day count is exact.
Can I calculate age at a specific date?
Yes. Change the second date field to any date — past or future — and the calculator will show how old you were (or will be) on that day.