Age Calculator
Calculate your exact age in years, months, weeks and days.
An age calculator computes your exact age from your date of birth in years, months, weeks and days.
Enter in YYYY-MM-DD format.
How to Use the Age Calculator
- Enter your birth date. Type or pick your date of birth.
- Read your age. See your age in years, months, weeks and days.
This tool processes your input locally in your browser. Nothing is uploaded.
What Is Age Calculator?
An age calculator tells you exactly how old you are in different units, useful for forms, milestones and record-keeping.
How age is calculated
The tool computes the difference between your date of birth and today, adjusting for months and days to give an accurate year count, then derives weeks and days.
Key Features
- Years, months, weeks and days
- Accurate day calculation
- Local processing
Examples
- Someone born on 2000-06-15 has a precise age that updates with the current date.
Common Use Cases
- Form filling
- Milestones
- Record-keeping
Tips & Best Practices
- Use YYYY-MM-DD for the most reliable parsing.
Limitations
- Results depend on the device's current date.
Related Tools
Related Articles
Age Calculator – Complete Guide & Free Online Tool An age calculator computes your exact age from your date of birth in years, months, weeks and days. Free online tool included. Read guide → Date Difference Calculator – Complete Guide & Free Online Tool A date difference calculator counts the days, weeks, months and years between two dates. Free online tool included. Read guide → Time Duration Calculator – Complete Guide & Free Online Tool A time duration calculator finds the hours, minutes and seconds between a start and end time (24-hour HH:MM format). Free online tool included. Read guide →
Frequently Asked Questions
How do you calculate age?
By computing the difference between the date of birth and the current date, adjusting for calendar months and days.
What date format should I use?
YYYY-MM-DD is recommended.
Is it free?
Yes, and it runs locally.