25 Weeks Pregnant — Baby Is the Size of a Rutabaga
At 25 weeks you are 175 days into the 40-week count, with 105 days to go and 63% of the pregnancy behind you. Baby is about the size of a rutabaga and weighs about 15.7 g. This page fixes week 25 in place: what is developing, which appointments are still ahead, and how the week maps onto months.
63% of 280 days. The due date itself is a midpoint, not a deadline: full-term births spread across roughly weeks 37 to 42.
This week
Baby's skin begins to lose its wrinkly look as fat fills in. Muscle tone and sleep-wake patterns emerge.
Measured in months, week 25 sits in month 6: Month six is the viability threshold, when a baby born early has a real chance with intensive care.
Appointments still ahead
| Window | Appointment | What it checks |
|---|---|---|
| 28–34 wks | Routine growth checks | Regular midwife visits, bump measurements and blood pressure. |
| 34–36 wks | Group B strep swab | A simple swab that protects the baby during delivery. |
| 37–40 wks | Weekly checkups | Position checks, growth checks and the birth plan in earnest. |
Around week 25
| Week | Size | Weight |
|---|---|---|
| 24 | an ear of corn | about 14.3 g |
| 25 | a rutabaga | about 15.7 g |
| 26 | a head of lettuce | about 17.1 g |
Frequently asked
What does 25 weeks pregnant mean in days and months?
25 weeks is 175 days since the first day of your last period, which is about 6 months pregnant on the four-week-per-month convention. 105 days remain in the 40-week count from here — that is 63% of the way through.
How big is a baby at 25 weeks?
Around the size of a rutabaga, at about 15.7 g. These are population averages: a scan measurement that differs by a few days is normal and does not by itself mean anything is wrong.
Which trimester is week 25?
The 2nd trimester. The split used here is the same one the calculator applies: the first trimester covers days 1–90, the second 91–195, and the third from day 196 onward. Other sources draw the boundary a week either side, which is why week 13 and week 14 can both be described as "end of the first trimester".
What appointments happen after week 25?
Next up: Routine growth checks at 28–34 weeks, Group B strep swab at 34–36 weeks, Weekly checkups at 37–40 weeks. The full schedule is in the table above; exact timing varies by country and by your care team.