Age in Weeks Calculator
Calculate your age in total weeks and days — instantly.
Enter dates to see your result.
We use calendar math (including leap years).
How to calculate age in weeks
- Select your birth date and an “as of” date.
- We calculate total days between dates.
- Weeks = total days ÷ 7 (plus remaining days).
FAQ
Is this age in weeks calculator accurate?
Yes. It uses real calendar dates and includes leap years.
Can I calculate weeks for a future date?
Yes — set the “as of date” to any future date.
Do you store my dates?
No. Calculations run locally in your browser.