Age Calculator — Free, Exact Age
Calculate your exact age in years, months, and days from your date of birth. 100% in your browser — free, no sign-up.
- ✓Free
- ✓No sign-up
- ✓Runs in your browser — files never uploaded
- ✓No watermark
How to
- 1Enter your date of birth.
- 2Optionally set a date to calculate the age at (defaults to today).
- 3Read your exact age in years, months, and days.
What does the age calculator do?
It works out exactly how old you are — in years, months, and days — from your date of birth, and also shows the total number of days and weeks you have lived. You can calculate age as of today or any other date.
How it works
Enter your date of birth (and optionally a target date). The calculation runs entirely in your browser, accounting for different month lengths and leap years, so the result is exact rather than a rough estimate.
When to use it
Find your precise age for a form or application, work out someone's age on a specific date, count down to a milestone birthday, or figure out an age gap. It is also handy for eligibility checks that depend on an exact age.
How the calculation works
The age is the calendar difference between your birth date and the target date: full years first, then the remaining whole months, then the remaining days — borrowing days from the previous month's real length when needed. Total days is the exact day count between the two dates, and total weeks is that divided by 7.
Why the result is exact
A year is not always 365 days and months vary in length, so subtracting years alone is inaccurate. This tool counts the real calendar difference, including leap days (Feb 29), to give an exact years/months/days breakdown.
FAQ
Does it account for leap years?+
Yes. It counts the real calendar difference including leap days, so the years/months/days result is exact, not an estimate.
Can I find my age on a specific date?+
Yes. Set the optional target date and it calculates your age as of that date instead of today.
Is my date of birth sent anywhere?+
No. The calculation runs entirely in your browser; nothing is uploaded.
What else does it show?+
Besides years, months, and days, it shows the total number of days and weeks you have lived.
Is it free?+
Yes, completely free — no sign-up and no watermark.
Is my data private?+
Yes — this tool runs entirely in your browser. Your files and text are never uploaded.
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