Poppyseed to pumpkin: how big is your baby? (Photos)

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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.
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  Four weeks

  Your baby, now officially an embryo, is about the size of a poppy seed. (Length: 2mm.)
  
  Find out more about your baby's development this week.
  
  Watch how your baby develops in our Inside Pregnancy: weeks 1-9 video.
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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. (Length: 3mm.)
  
  Find out more about your baby's development this week.
  
  Watch how your baby develops in our Inside Pregnancy: weeks 1-9 video.
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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.
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  Seven weeks

  Your baby, having doubled in size since last week, is about as big as a chick pea. (Length: 1.2cm.)
  
  Find out more about your baby's development this week.
  
  Watch how your baby develops in our Inside Pregnancy: weeks 1-9 video.
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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.
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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.
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  10 weeks

  Your baby, now barely the size of a kumquat, 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.
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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.
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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.
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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.
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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.
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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.
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  16 weeks

  This week your baby measures up to a pear 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.
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  17 weeks

  Your baby weighs 140g this week, and is about the size of a ginger root. (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.
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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.
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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.
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  20 weeks

  Your baby has grown about as long as a 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.
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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.
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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.
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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.
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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.
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  25 weeks

  Your baby weighs about the same as the average rutabaga, 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.
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  26 weeks

  Your baby is about as long as a green onion and weighs about 760g. (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.
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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.
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  28 weeks

  Your baby is close to an eggplant, 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.
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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.
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  30 weeks

  Your baby is about as big as 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.
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  31 weeks

  Your baby now weighs about as much a coconut at 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.
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  32 weeks

  Your baby is taking up more and more space in your uterus (womb) and is about as long as a stalk of kale at 42.4cm from head to heel. (Weight: 1.7kg)
  
  Find out more about your baby's development this week.
  
  Watch how your baby develops in our Inside Pregnancy: weeks 28-37 video.
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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.
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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.
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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 maneuver 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.
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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 large head of 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.
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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.
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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.
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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.
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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.

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