Age Calculator
Find exact age in years, months and days from any date.
How to use this tool
- Pick the birth date.
- Optionally change the target date (default today).
- Click Calculate for the full breakdown.
How it works
The calendar difference decomposes into completed years, then months, then remaining days, with total days and weeks as checks.
Tips
- Use a future target to pre-plan milestone birthdays.
- Use a past target for historical record checks.
Limitations
Date ranges rely on the browser's local calendar/time zone.
Frequently asked questions
How do you count age in months and days?
From the birth date, add full years, then full months, then days to the target date.
Can I compute age at a specific date?
Yes — set 'date of interest' instead of today, useful for historical or future dates.
Does it handle leap years?
Yes — calendar math accounts for actual month lengths and leap days.