Age in Weeks Calculator

Use this free tool to calculate your exact age in weeks. Perfect for tracking baby milestones, pregnancy timelines, or just satisfying your curiosity.

Enter your date of birth:

How to Use the Age in Weeks Calculator

Enter your birth date in the calendar box above.
Click the “Calculate” button.
See your age in weeks instantly — no sign-up required!

FAQs

Why calculate age in weeks?

Many baby development stages and pregnancy timelines are measured in weeks. This tool makes it easy to track them accurately.

Can I use this for my child?

Yes, just enter their birth date and you’ll see how many weeks old they are — great for parents!

Does this work on mobile?

Yes, our calculator is 100% mobile-friendly.