Pregnancy week by week
A calm, no-alarm guide to every week of pregnancy — baby's size compared to a fruit, what's developing, and the symptoms people commonly notice.
Baby growth chart
Typical fetal length and weight from week 8 to week 40.
Length
cmWeight
gramsTypical averages based on Hadlock / ACOG references. Weeks 8–20 use crown–rump length; weeks 21–40 switch to crown–heel — that's the small jump you'll see mid-chart. Real babies vary — your ultrasound is the reliable number for you.55
Week 1
Size of a poppy seed
—
Week 2
Size of a poppy seed
—
Week 3
Size of a pinhead
0.1 cm
Week 4
Size of a poppy seed
0.2 cm
Week 5
Size of a sesame seed
0.2 cm
Week 6
Size of a lentil
0.4 cm
Week 7
Size of a blueberry
1 cm
Week 8
Size of a raspberry
1.6 cm
Week 9
Size of a cherry
2.3 cm
Week 10
Size of a strawberry
3.1 cm
Week 11
Size of a fig
4.1 cm
Week 12
Size of a lime
5.4 cm
Week 13
Size of a lemon
7.4 cm
Week 14
Size of a peach
8.7 cm
Week 15
Size of a apple
10.1 cm
Week 16
Size of a avocado
11.6 cm
Week 17
Size of a pear
13 cm
Week 18
Size of a bell pepper
14.2 cm
Week 19
Size of a mango
15.3 cm
Week 20
Size of a banana
16.4 cm
Week 21
Size of a carrot
26.7 cm
Week 22
Size of a papaya
27.8 cm
Week 23
Size of a grapefruit
28.9 cm
Week 24
Size of a cantaloupe
30 cm
Week 25
Size of a cauliflower
34.6 cm
Week 26
Size of a lettuce
35.6 cm
Week 27
Size of a cabbage
36.6 cm
Week 28
Size of a eggplant
37.6 cm
Week 29
Size of a butternut squash
38.6 cm
Week 30
Size of a cabbage
39.9 cm
Week 31
Size of a coconut
41.1 cm
Week 32
Size of a jicama
42.4 cm
Week 33
Size of a pineapple
43.7 cm
Week 34
Size of a cantaloupe
45 cm
Week 35
Size of a honeydew melon
46.2 cm
Week 36
Size of a romaine lettuce
47.4 cm
Week 37
Size of a swiss chard
48.6 cm
Week 38
Size of a leek
49.8 cm
Week 39
Size of a mini watermelon
50.7 cm
Week 40
Size of a small pumpkin
51.2 cm