Free Age Calculator
Enter your date of birth to find your exact age in years, months and days — plus total days lived and a countdown to your next birthday. Fast, free and private.
How to use
- Enter your date of birth in the first field.
- Optionally pick a different “as of” date — otherwise today is used.
- Click Calculate Age to see years, months, days, total days lived and your next-birthday countdown.
Frequently asked questions
How is my exact age calculated?
We compare your date of birth with the target date, borrowing days and months exactly like a calendar does — leap years and varying month lengths are handled automatically.
Is my date of birth stored anywhere?
No. The calculation runs entirely in your browser with JavaScript — your birth date never leaves your device.
Can I calculate age for a past or future date?
Yes — set any “as of” date to see your age on that day, useful for forms, eligibility checks and planning.
Is this age calculator free?
Yes — unlimited use, no account or signup required.
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