The short answer
30 weeks = 7 months
At 30 weeks pregnant, you are about 7 months pregnant — in month 7 of your pregnancy and in your third trimester.
Not sure of your week? Use the pregnancy week calculator to find it from your last period, due date or conception date.
The brain is growing rapidly and developing its characteristic folds. The fine lanugo hair is starting to shed.
About the size of a cucumber
size comparison
39.9 cm
crown to heel (15.7 in)
1.3 kg
average weight (2.9 lb)
The bone marrow has fully taken over red blood cell production. Eyes are open when awake and can distinguish light from dark, though vision will remain blurry for months after birth. The fetus is putting on about half a pound a week, and the amount of amniotic fluid begins to decrease as it grows.
Sizes and weights are averages — healthy babies vary widely, and your scan measurements are what count.
Fatigue can return in force as your body works harder and sleep is interrupted. Mood swings and “pregnancy brain” forgetfulness are common. Feet may feel flatter and wider due to relaxed ligaments, and some people notice their bump has dropped a little or is carrying differently.
Common symptoms this week
70
days to go
10
weeks to go
210
days so far
At 30 weeks 0 days you are 210 days into a 280-day pregnancy, which leaves 70 days — 10 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: 49 days until early term (37 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 30 falls in month 7, in the third 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 — 30+3 or 30w3d, 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 |
|---|---|---|---|
| 30 weeks 0 days (this page) | 30+0 | 210 | 70 |
| 30 weeks 1 day | 30+1 | 211 | 69 |
| 30 weeks 2 days | 30+2 | 212 | 68 |
| 30 weeks 3 days | 30+3 | 213 | 67 |
| 30 weeks 4 days | 30+4 | 214 | 66 |
| 30 weeks 5 days | 30+5 | 215 | 65 |
| 30 weeks 6 days | 30+6 | 216 | 64 |
At 30 weeks pregnant, you are about 7 months pregnant — in month 7 of your pregnancy and in your third trimester. Months of pregnancy are counted as uneven 4–5 week buckets so that the full 40 weeks fits into 9 calendar months.
30 weeks is in the third trimester, which runs from 28 weeks 0 days until birth. Full term begins at 39 weeks 0 days.
About 10 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 30 weeks 0 days you are 210 days into a 280-day pregnancy, so there are 70 days left until the 40-week mark — that's 10 weeks. The count drops by one for each day you move through week 30.
30 weeks is 210 days, counted from the first day of your last menstrual period (30 × 7 = 210). Add the days into your current week for the exact figure — for example 30 weeks 3 days is 213 days.