Poppy seed to pumpkin: how big is your baby? (photos)

Francesca
by Francesca Whiting | April 2021 |
Images: Leigh Beisch for BabyCenter
  • animated collage of various vegetables, pumpkin, melon, cabbage, tomato, beans, kumquat, and lentils
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    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.
  • Poppy seeds
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    Four weeks

    Your baby, now officially an embryo, is about the size of a poppy seed.

    Find out more about your baby's development this week.

    Watch how your baby develops in our Inside Pregnancy: weeks 1-9 video.
  • Sesame seeds
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    Five weeks

    Your baby is about the size of a sesame seed, looking more like a tiny tadpole than a human being.

    Find out more about your baby's development this week.

    Watch how your baby develops in our Inside Pregnancy: weeks 1-9 video.
  • Lentils
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    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.
  • Blueberries
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    Seven weeks

    Your baby, having doubled in size since last week, is about as big as a blueberry. (Length: 1cm.)

    Find out more about your baby's development this week.

    Watch how your baby develops in our Inside Pregnancy: weeks 1-9 video.
  • Kidney beans
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    Eight weeks

    Your baby, now about the size of a kidney bean, weighs 1g 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.
  • Grapes
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    Nine weeks

    Your baby is around the same size as a grape and weighs 2g. (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.
  • Green olives
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    10 weeks

    Your baby, now about the size of a green olive, weighs only 4g. (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.
  • Fig
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    11 weeks

    Your baby is now about as big as a fig and weighs about 7g. (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.
  • Lime
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    12 weeks

    Your baby is about the size of a lime and weighs 14g. (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.
  • Pea pod
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    13 weeks

    Your baby is almost as long as a pea pod and weighs 23g. (Length: 7.4cm, 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.
  • Lemon
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    14 weeks

    Your baby, now roughly the size of a lemon, weighs about 43g. (Length: 8.7cm, 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.
  • Apple
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    15 weeks

    Your baby has grown to around the same size as an apple and weighs about 70g. (Length: 10.1cm, head to bottom.)

    Find out more about your baby's development this week.

    Watch how your baby develops in our Inside Pregnancy: weeks 15-20 video.
  • Avocado
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    16 weeks

    This week your baby measures up to an avocado in size and weighs 100g. (Length: 11.6cm, head to bottom.)

    Find out more about your baby's development this week.

    Watch how your baby develops in our Inside Pregnancy: weeks 15-20 video.
  • Turnip
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    17 weeks

    Your baby weighs 140g this week, about as much as a turnip. (Length: 13cm, head to bottom.)

    Find out more about your baby's development this week.

    Watch how your baby develops in our Inside Pregnancy: weeks 15-20 video.
  • Bell pepper
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    18 weeks

    Your baby is nearly as big as a bell pepper and weighs 190g. (Length: 14.2cm, head to bottom.)

    Find out more about your baby's development this week.

    Watch how your baby develops in our Inside Pregnancy: weeks 15-20 video.
  • Heirloom tomato
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    19 weeks

    This week your baby is about as large as an heirloom tomato and weighs 240g. (Length: 15.3cm, head to bottom.)

    Find out more about your baby's development this week.

    Watch how your baby develops in our Inside Pregnancy: weeks 15-20 video.
  • Banana
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    20 weeks

    Your baby has grown about as long as a small banana and weighs 300g. (From about 20 weeks your baby will be measured from head to heel. Length: 16.4cm, head to bottom, and 25.6cm, head to heel.)

    Find out more about your baby's development this week.

    Watch how your baby develops in our Inside Pregnancy: weeks 15-20 video.
  • Carrot
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    21 weeks

    Your baby, almost as long as a carrot, weighs about 360g. (Length: 26.7cm, head to heel.)

    Find out more about your baby's development this week.

    Watch how your baby develops in our Inside Pregnancy: weeks 21-27 video.
  • Spaghetti squash
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    22 weeks

    Your baby is around the size of a spaghetti squash and weighs 430g. (Length: 27.8cm, head to heel.)

    Find out more about your baby's development this week.

    Watch how your baby develops in our Inside Pregnancy: weeks 21-27 video.
  • Mango
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    23 weeks

    Your baby weighs about as much as a large mango, just over 500g. (Length: 28.9cm, head to heel.)

    Find out more about your baby's development this week.

    Watch how your baby develops in our Inside Pregnancy: weeks 21-27 video.
  • Ear of corn
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    24 weeks

    Your baby is nearly as long as an ear of corn and weighs about 600g. (Length: 30cm, head to heel.)

    Find out more about your baby's development this week.

    Watch how your baby develops in our Inside Pregnancy: weeks 21-27 video.
  • Swede
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    25 weeks

    Your baby weighs about the same as the average swede, around 660g. (Length: 34.6cm, head to heel.)

    Find out more about your baby's development this week.

    Watch how your baby develops in our Inside Pregnancy: weeks 21-27 video.
  • Red cabbage
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    26 weeks

    Your baby weighs about 760g, as much as a red cabbage. (Length: 35.6cm, head to heel.)

    Find out more about your baby's development this week.

    Watch how your baby develops in our Inside Pregnancy: weeks 21-27 video.
  • Cauliflower
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    27 weeks

    Your baby is about as heavy as a head of cauliflower, weighing in at 875g. (Length: 36.6cm, head to heel.)

    Find out more about your baby's development this week.

    Watch how your baby develops in our Inside Pregnancy: weeks 21-27 video.
  • Aubergine
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    28 weeks

    Your baby is close to an aubergine in weight, just over 1kg. (Length: 37.6cm, head to heel.)

    Find out more about your baby's development this week.

    Watch how your baby develops in our Inside Pregnancy: weeks 28-37 video.
  • Butternut squash
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    29 weeks

    Your baby is almost the size of a butternut squash and weighs just under 1.2kg. (Length: 38.6cm, head to heel.)

    Find out more about your baby's development this week.

    Watch how your baby develops in our Inside Pregnancy: weeks 28-37 video.
  • Cabbage
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    30 weeks

    Your baby is about as big as a good-sized cabbage this week, weighing in at 1.3kg. (Length: 39.9cm, head to heel.)

    Find out more about your baby's development this week.

    Watch how your baby develops in our Inside Pregnancy: weeks 28-37 video.
  • Coconut
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    31 weeks

    Your baby now weighs about as much as a coconut, nearly 1.5kg. (Length: 41.1cm, head to heel.)

    Find out more about your baby's development this week.

    Watch how your baby develops in our Inside Pregnancy: weeks 28-37 video.
  • Kale
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    32 weeks

    Your baby is taking up more and more space in your womb (uterus), weighs about 1.7kg and is as long as a stalk of kale. (Length: 42.4cm, head to heel.)

    Find out more about your baby's development this week.

    Watch how your baby develops in our Inside Pregnancy: weeks 28-37 video.
  • Pineapple
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    33 weeks

    Your baby weighs almost the same as a pineapple, which is about 1.9kg. (Length: 43.7cm, head to heel.)

    Find out more about your baby's development this week.

    Watch how your baby develops in our Inside Pregnancy: weeks 28-37 video.
  • Cantaloupe melon
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    34 weeks

    Your baby is about the size of an average cantaloupe melon, weighing 2.1kg. (Length: 45cm, head to heel.)

    Find out more about your baby's development this week.

    Watch how your baby develops in our Inside Pregnancy: weeks 28-37 video.
  • Honeydew melon
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    35 weeks

    Your baby, now about as heavy as a honeydew melon at 2.4kg, doesn't have much room to manoeuvre in your tummy. (Length: 46.2cm, head to heel.)

    Find out more about your baby's development this week.

    Watch how your baby develops in our Inside Pregnancy: weeks 28-37 video.
  • Romaine lettuce
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    36 weeks

    Your baby, over 2.6kg and still piling on the weight at a rate of about 30g a day, is close to the size of a romaine lettuce. (Length: 47.4cm, head to heel.)

    Find out more about your baby's development this week.

    Watch how your baby develops in our Inside Pregnancy: weeks 28-37 video.
  • Swiss chard
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    37 weeks

    Your baby is about as long as a stalk of Swiss chard and weighs nearly 2.9kg. (Length: 48.6cm, head to heel.)

    Find out more about your baby's development this week.

    Watch how your baby develops in our Inside Pregnancy: weeks 28-37 video.
  • Leek
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    38 weeks

    Your baby, now about as long as a leek, weighs just over 3kg. (Length: 49.8cm, head to heel.)

    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.
  • Mini-watermelon
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    39 weeks

    Your baby is about as heavy as a mini-watermelon, weighing just under 3.3kg. (Length: 50.7cm, head to heel.)

    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.
  • Pumpkin
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    40 weeks

    Your baby is around the size of a small pumpkin and weighs just under 3.5kg. (Length: 51.2cm, head to heel.)

    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.
Francesca Whiting
Francesca Whiting
Francesca Whiting is an editor at BabyCentre. She’s responsible for making sure BabyCentre’s health content is accurate, helpful and easy to understand.

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