Postpartum week calculator

Enter your baby's birth date and see what week postpartum you are in right now, plus what that stretch tends to feel like for moms.

Your baby's birth date

How postpartum weeks are counted

Postpartum weeks count forward from your baby's birth date: the day your baby was born starts week 0, and each completed 7 days adds a week. Week 6 is a common checkup milestone, and the first 12 weeks are often called the fourth trimester. Counting weeks is not just bookkeeping: knowing where you are helps you calibrate expectations for sleep, feeding, healing, and your own emotions.

The first year, stretch by stretch

Weeks	Often called	What many moms describe
0 to 6	Early fourth trimester	Healing, round-the-clock feeds, emotions that swing by the hour
7 to 12	Late fourth trimester	First smiles, slightly longer stretches, missing the old routine
13 to 26	Months 3 to 6	The world moves on, identity questions get louder
27 to 52	Months 6 to 12	New rhythm settles, pieces of you start coming back changed

Every baby and every recovery runs on its own clock, so treat these stretches as a map of what is common, not a schedule to hit. If you want the deeper story of what happens to your identity across this year, start with our guide: You After Baby: why you feel like a different person.

Questions moms ask

How many weeks postpartum am I?

Count full weeks from your baby's birth date, or use the calculator above: it does exactly that arithmetic, in your browser, without collecting anything.

How long is the postpartum period?

Medical definitions vary: the traditional checkup window runs about 6 to 8 weeks, ACOG describes postpartum care as an ongoing process rather than a single visit, and emotionally many moms consider the whole first year postpartum. All three framings are legitimate.

Is the fourth trimester real?

It is a widely used way to describe the first roughly 12 weeks, when your baby is adjusting to the world and you are adjusting to your baby. It is not a formal medical term, but it names something real about how unfinished everyone feels at birth.

When should I talk to a doctor about how I feel?

If heaviness, anxiety, or numbness lasts more than two weeks, gets worse instead of better, or you ever have thoughts of harming yourself or your baby, contact your doctor or midwife now, or reach Postpartum Support International at 1-800-944-4773. In a crisis, call or text 988. Getting help early is the strong move.

Sources

This tool and page are general information and emotional support, not medical advice, diagnosis, or treatment. Talk to your doctor about your recovery and your baby's pediatrician about your baby.