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Age Calculator
Enter a birth date to see the exact age in years, months and days, total days lived, and how long until the next birthday.
How to use
- Pick the date of birth.
- Optionally change the “age at” date (default is today).
- Results appear instantly.
Frequently asked questions
How is age calculated?
The calendar difference in full years, months and days between the two dates.
Are leap years included?
Yes, the calculation uses real calendar days.
Does it work for a future date?
Yes. Enter a later day in the “age at date” field to see how old you will be then.
Is my birth date stored on a server?
No. Everything is calculated in your browser and the date is never sent anywhere.