How do you calculate weeks postpartum?

We count whole days from the baby's birth date (UTC) to today (UTC), then convert to weeks and remaining days.

UTC avoids off-by-one errors caused by time zones and daylight saving time changes.

Is this medical advice?

No. This calculator is informational only and is not a substitute for medical guidance.

Enter your baby's birth date to calculate how many weeks and days postpartum you are. This calculator is UTC-safe for consistent results.

Does this count the day of birth?

We count whole days between UTC midnights. If you want to include the birth day as “day 1,” you can add 1 to the total days shown in the pills.

Can I also calculate weeks pregnant or due date countdowns?

Why might another calculator differ?

Some tools use local time and partial days. We use whole-day UTC boundaries for consistent results.