Age Calculator
Enter your date of birth to calculate your exact age in years, months and days — plus how many days you have lived and how long until your next birthday.
Your age is
How to use
- Select your date of birth.
- Optionally change the "age at" date to calculate age at a specific moment.
- Read your exact age, total days lived and the countdown to your next birthday.
Frequently asked questions
How is my age calculated exactly?
The calculator counts full years first, then remaining full months, then remaining days, taking leap years and different month lengths into account — the same method used on official documents.
Can I calculate someone else’s age?
Yes. Enter any date of birth and any target date. This is handy for official forms, school registration or checking a historical date.
Can I calculate age at a future date?
Yes — set the "age at" field to any future date to see how old you (or anyone) will be on that day. Useful for visa applications, pension planning and event planning.
Why do some calculators show a different age?
Some tools count age as a simple difference in years, ignoring months and days. This calculator uses the official method — full years, then full months, then days — so it matches birth certificates and official forms.