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Age Calculator
“How old am I?” is easy until a form wants years, months, and days. This age calculator compares two calendar dates and returns an exact breakdown—handy for applications, benefits windows, and milestones.
Last reviewed July 30, 2026.
When to use this
- Filling forms that ask for exact age components
- Checking age as of a specific deadline (not just today)
- Celebrating or verifying milestone dates
Worked example
Born January 15, 2000, as of January 15, 2026 → 26 years, 0 months, 0 days. Born June 15, 1995, as of July 30, 2026 → 31 years, 1 month, 15 days.
Common mistakes
- Using total days ÷ 365.25 and calling it exact age
- Forgetting leap days when doing mental math across February
- Using tomorrow’s date when a form says “as of today”
How it works
We subtract calendar years, then months, then days, borrowing from the previous month/year when needed—so the result matches civil age, not a pure day count.
How to use
- Enter the birth date.
- Optionally change the “as of” date.
- Read years, months, and days.
FAQ
How exact is the age?
It returns years, months, and days based on calendar dates, not merely dividing total days by 365.
What if the as-of date is before the birth date?
We show zero rather than a negative age.
Does this use the time of day?
No—only calendar dates.
Is this legal proof of age?
No. Use official IDs and records for legal or compliance needs.
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