Baby Age Calculator (Weeks & Months)
Calculator ToolsYour baby’s age in months, weeks and days
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All history →Baby Age Calculator (Weeks & Months) — at a glance
Know your baby’s exact age at a glance.
Date of birth
Calculate Age
Age in months
Age in weeks
How to use it — step by step
The date of birth. Today’s date is used for the age.
1
Enter your values
Fill in the fields. Default numbers are shown so you can see how it works.
2
Press Calculate Age
The answer appears at once as large result cards.
3
Copy or share
Copy the result, or share a link that opens with your numbers filled in.
Pro tips
Small things that make the result better.
✦Premature babies are often tracked by adjusted age.
✦Keep the date handy for vaccine visits.
✦Use the weeks count for early milestones.
Quick facts
Freeno signup
Privateruns in your browser
Instantresult in a second
No limituse it as often as you like
Frequently Asked Questions
How are months counted?+
Full calendar months since the birth date, plus the extra days.
What about premature babies?+
Doctors may use an adjusted age. Ask your paediatrician.
Is my data safe?+
Yes. Everything runs inside your own browser. Your text, files and images are never uploaded to any server.
Is this tool really free?+
Yes — completely free, no signup, no watermark and no usage limit.
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