Poppy seed to pumpkin: how big is your baby? (photos)
- How big is your baby?
- Four weeks
- Five weeks
- Six weeks
- Seven weeks
- Eight weeks
- Nine weeks
- 10 weeks
- 11 weeks
- 12 weeks
- 13 weeks
- 14 weeks
- 15 weeks
- 16 weeks
- 17 weeks
- 18 weeks
- 19 weeks
- 20 weeks
- 21 weeks
- 22 weeks
- 23 weeks
- 24 weeks
- 25 weeks
- 26 weeks
- 27 weeks
- 28 weeks
- 29 weeks
- 30 weeks
- 31 weeks
- 32 weeks
- 33 weeks
- 34 weeks
- 35 weeks
- 36 weeks
- 37 weeks
- 38 weeks
- 39 weeks
- 40 weeks
How big is your baby?
After talking to our doctors and the greengrocer, we've got a real-world guide that'll give you a new way to answer the question: How far along are you?
Read more about your baby's development week-by-week.
Watch how your baby develops in our Inside Pregnancy videos.
Four weeks
Find out more about your baby's development this week.
Watch how your baby develops in our Inside Pregnancy: weeks 1-9 video.
Five weeks
Find out more about your baby's development this week.
Watch how your baby develops in our Inside Pregnancy: weeks 1-9 video.
Six weeks
By six weeks, your baby is about the size of a lentil. (Length: 5mm.)
Find out more about your baby's development this week.
Watch how your baby develops in our Inside Pregnancy: weeks 1-9 video.
Seven weeks
Find out more about your baby's development this week.
Watch how your baby develops in our Inside Pregnancy: weeks 1-9 video.
Eight weeks
Your baby, now about the size of a kidney bean, weighs 20g and is constantly moving and shifting. (Length: 1.6cm, head to bottom.)
Find out more about your baby's development this week.
Watch how your baby develops in our Inside Pregnancy: weeks 1-9 video.
Nine weeks
Your baby is around the same size as a grape and weighs 27g. (Length: 2.3cm, head to bottom.)
Find out more about your baby's development this week.
Watch how your baby develops in our Inside Pregnancy: weeks 1-9 video.
10 weeks
Your baby, now about the size of a green olive, weighs only 35g. (Length: 3.1cm, head to bottom.)
Find out more about your baby's development this week.
Watch how your baby develops in our Inside Pregnancy: weeks 10-14 video.
11 weeks
Your baby is now about as big as a fig and weighs about 45g. (Length: 4.1cm, head to bottom.)
Find out more about your baby's development this week.
Watch how your baby develops in our Inside Pregnancy: weeks 10-14 video.
12 weeks
Your baby is about the size of a lime and weighs 58g. (Length: 5.4cm, head to bottom.)
Find out more about your baby's development this week.
Watch how your baby develops in our Inside Pregnancy: weeks 10-14 video.
13 weeks
Your baby is almost as long as a pea pod and weighs 73g. (Length: 6.7cm, head to bottom.)
Find out more about your baby's development this week.
Watch how your baby develops in our Inside Pregnancy: weeks 10-14 video.
14 weeks
Your baby, now roughly the size of a lemon, weighs about 93g. (Length: 14.7cm, head to toe.)
Find out more about your baby's development this week.
Watch how your baby develops in our Inside Pregnancy: weeks 10-14 video.
15 weeks
Your baby has grown to around the same size as an apple and weighs about 117g. (Length: 16.7cm, head to toe.)
Find out more about your baby's development this week.
Watch how your baby develops in our Inside Pregnancy: weeks 15-20 video.
16 weeks
This week your baby measures up to an avocado in size and weighs 146g. (Length: 18.6cm, head to toe.)
Find out more about your baby's development this week.
Watch how your baby develops in our Inside Pregnancy: weeks 15-20 video.
17 weeks
Your baby weighs 181g this week, about as much as a turnip. (Length: 20.4cm, head to toe.)
Find out more about your baby's development this week.
Watch how your baby develops in our Inside Pregnancy: weeks 15-20 video.
18 weeks
Your baby is nearly as big as a bell pepper and weighs 223g. (Length: 22.2cm, head to toe.)
Find out more about your baby's development this week.
Watch how your baby develops in our Inside Pregnancy: weeks 15-20 video.
19 weeks
This week your baby is about as large as an heirloom tomato and weighs 273g. (Length: 24cm, head to toe.)
Find out more about your baby's development this week.
Watch how your baby develops in our Inside Pregnancy: weeks 15-20 video.
20 weeks
Your baby has grown about as long as a small banana and weighs 331g. (Length: 25.7cm, head to toe.)
Find out more about your baby's development this week.
Watch how your baby develops in our Inside Pregnancy: weeks 15-20 video.
21 weeks
Your baby, almost as long as a carrot, weighs about 399g. (Length: 27.4cm, head to toe.)
Find out more about your baby's development this week.
Watch how your baby develops in our Inside Pregnancy: weeks 21-27 video.
22 weeks
Your baby is around the size of a spaghetti squash and weighs 478g. (Length: 29cm, head to toe.)
Find out more about your baby's development this week.
Watch how your baby develops in our Inside Pregnancy: weeks 21-27 video.
23 weeks
Your baby weighs about as much as a large mango, just over 568g. (Length: 30.6cm, head to toe.)
Find out more about your baby's development this week.
Watch how your baby develops in our Inside Pregnancy: weeks 21-27 video.
24 weeks
Your baby is nearly as long as an ear of corn and weighs about 670g. (Length: 32.2cm, head to toe.)
Find out more about your baby's development this week.
Watch how your baby develops in our Inside Pregnancy: weeks 21-27 video.
25 weeks
Your baby weighs about the same as the average swede, around 785g. (Length: 33.7cm, head to toe.)
Find out more about your baby's development this week.
Watch how your baby develops in our Inside Pregnancy: weeks 21-27 video.
26 weeks
Your baby weighs about 913g, as much as a red cabbage. (Length: 35.1cm, head to toe.)
Find out more about your baby's development this week.
Watch how your baby develops in our Inside Pregnancy: weeks 21-27 video.
27 weeks
Your baby is about as heavy as a head of cauliflower, weighing in at 1.1kg. (Length: 36.6cm, head to toe.)
Find out more about your baby's development this week.
Watch how your baby develops in our Inside Pregnancy: weeks 21-27 video.
28 weeks
Your baby is close to an aubergine in weight, just over 1.2kg. (Length: 37.6cm, head to toe.)
Find out more about your baby's development this week.
Watch how your baby develops in our Inside Pregnancy: weeks 28-37 video.
29 weeks
Your baby is almost the size of a butternut squash and weighs just under 1.4kg. (Length: 39.3cm, head to toe.)
Find out more about your baby's development this week.
Watch how your baby develops in our Inside Pregnancy: weeks 28-37 video.
30 weeks
Your baby is about as big as a good-sized cabbage this week, weighing in at 1.6kg. (Length: 40.5cm, head to toe.)
Find out more about your baby's development this week.
Watch how your baby develops in our Inside Pregnancy: weeks 28-37 video.
31 weeks
Your baby now weighs about as much as a coconut, nearly 1.8kg. (Length: 41.8cm, head to toe.)
Find out more about your baby's development this week.
Watch how your baby develops in our Inside Pregnancy: weeks 28-37 video.
32 weeks
Find out more about your baby's development this week.
Watch how your baby develops in our Inside Pregnancy: weeks 28-37 video.
33 weeks
Find out more about your baby's development this week.
Watch how your baby develops in our Inside Pregnancy: weeks 28-37 video.
34 weeks
Your baby is about the size of an average cantaloupe melon, weighing 2.4kg. (Length: 45.3cm, head to toe.)
Find out more about your baby's development this week.
Watch how your baby develops in our Inside Pregnancy: weeks 28-37 video.
35 weeks
Your baby, now about as heavy as a honeydew melon at 2.6kg, doesn't have much room to manoeuvre in your tummy. (Length: 46.3cm, head to toe.)
Find out more about your baby's development this week.
Watch how your baby develops in our Inside Pregnancy: weeks 28-37 video.
36 weeks
Your baby, over 2.8kg and still piling on the weight at a rate of about 30g a day, is close to the size of a romaine lettuce. (Length: 47.3cm, head to toe.)
Find out more about your baby's development this week.
Watch how your baby develops in our Inside Pregnancy: weeks 28-37 video.
37 weeks
Your baby is about as long as a stalk of Swiss chard and weighs nearly 3kg. (Length: 48.3cm, head to toe.)
Find out more about your baby's development this week.
Watch how your baby develops in our Inside Pregnancy: weeks 28-37 video.
38 weeks
Your baby, now about as long as a leek, weighs just over 3.2kg. (Length: 49.3cm, head to toe.)
Find out more about your baby's development this week.
Follow the stages of labour from contractions to birth in our Inside Pregnancy: labour to birth video.
39 weeks
Find out more about your baby's development this week.
Follow the stages of labour from contractions to birth in our Inside Pregnancy: labour to birth video.
40 weeks
Find out more about your newborn's development.
Follow the stages of labour from contractions to birth in our Inside Pregnancy: labour to birth video.
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Francesca Whiting is digital content executive at BabyCentre. She’s responsible for making sure BabyCentre’s health content is accurate, helpful and easy to understand.