The short answer
25 weeks = 6 months
At 25 weeks pregnant, you are about 6 months pregnant — in month 6 of your pregnancy and in your second trimester.
Not sure of your week? Use the pregnancy week calculator to find it from your last period, due date or conception date.
The fetus may respond to your voice with movement, and hair is growing in with its color and texture forming.
About the size of a rutabaga
size comparison
34.6 cm
crown to heel (13.6 in)
660 g
average weight (1.5 lb)
The nostrils, closed until now, are opening, and the fetus is practicing breathing movements more consistently. Capillaries are forming beneath the skin, adding pink color, and the spine is developing its joints, ligaments and rings. Hands are fully developed and dexterity is improving.
Sizes and weights are averages — healthy babies vary widely, and your scan measurements are what count.
Hemorrhoids and constipation are common companions from now as the growing uterus adds pressure to veins and slows digestion. Restless legs syndrome — an urge to move the legs at night — affects some people in the second half of pregnancy. Sleep can be lighter, and heartburn more frequent.
Common symptoms this week
105
days to go
15
weeks to go
175
days so far
At 25 weeks 0 days you are 175 days into a 280-day pregnancy, which leaves 105 days — 15 weeks — until 40 weeks. That number drops by one for every day you move through this week. Remember the due date is an estimate: only about 1 in 20 babies is born on it, and most arrive within two weeks on either side.
Next milestone: 21 days until the third trimester (28 weeks 0 days).
A calendar month averages about 4.3 weeks — not 4 — so you can't just divide your week number by four. Instead, months of pregnancy are counted as uneven buckets of 4 to 5 weeks, arranged so the full 40 weeks fits into 9 calendar months. Week 25 falls in month 6, in the second trimester.
Your care team will always use weeks and days rather than months, because screening windows and term definitions are set by exact week — months are just the everyday shorthand. For the full conversion, see the weeks to months chart, or go the other way with the months-to-weeks guide.
Your notes will show a week and a day — 25+3 or 25w3d, for example. Pick the exact day you are on for its own day count, countdown and month answer.
| Week + day | Shorthand | Days pregnant | Days to go |
|---|---|---|---|
| 25 weeks 0 days (this page) | 25+0 | 175 | 105 |
| 25 weeks 1 day | 25+1 | 176 | 104 |
| 25 weeks 2 days | 25+2 | 177 | 103 |
| 25 weeks 3 days | 25+3 | 178 | 102 |
| 25 weeks 4 days | 25+4 | 179 | 101 |
| 25 weeks 5 days | 25+5 | 180 | 100 |
| 25 weeks 6 days | 25+6 | 181 | 99 |
At 25 weeks pregnant, you are about 6 months pregnant — in month 6 of your pregnancy and in your second trimester. Months of pregnancy are counted as uneven 4–5 week buckets so that the full 40 weeks fits into 9 calendar months.
25 weeks is in the second trimester, which runs from 14 weeks 0 days through 27 weeks 6 days. The third trimester begins at 28 weeks 0 days.
About 15 weeks until the 40-week mark — though only about 1 in 20 babies arrives exactly on the due date. Most are born within two weeks on either side of it.
At 25 weeks 0 days you are 175 days into a 280-day pregnancy, so there are 105 days left until the 40-week mark — that's 15 weeks. The count drops by one for each day you move through week 25.
25 weeks is 175 days, counted from the first day of your last menstrual period (25 × 7 = 175). Add the days into your current week for the exact figure — for example 25 weeks 3 days is 178 days.