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How Big Is Your Baby? First Trimester

Your Baby's Size Week by Week

First Trimester | Second Trimester | Third Trimester

*Counting from the first day of your last menstrual period

3 Weeks Pregnant - Grain of Salt

Size: 0.01 inches (0.25 mm)**  |   Weight: Still too small to weigh
Sperm met egg and new life has been created! [more]
Your baby is the size of a grain of salt at 3 weeks pregnant - Pregnancy Week By Week

4 Weeks Pregnant - Poppy Seed

Size: 0.04 inches (1 mm)  |   Weight: Still too small to weigh
In the second week of embryonic development, the hundreds of cells forming your baby-to-be have multiplied... [more]
Your baby is the size of a poppy seed at 4 weeks pregnant - Pregnancy Week By Week

5 Weeks Pregnant - Seseame Seed

Size: 0.13 inches (3.3 mm)  |   Weight: less than 1 gram
Your tiny baby doesn't look much like a baby yet, but is developing at a very rapid pace... [more]
Your baby is the size of a sesame seed at 5 weeks pregnant - Pregnancy Week By Week

6 Weeks Pregnant - Lentil

Size: 0.25 inches (6.3 mm)  |   Weight: less than 1 gram
Baby's ears, nose, and mouth are starting to take shape on an oversized head... [more]
Your baby is the size of a lentil at 6 weeks pregnant - Pregnancy Week By Week

7 Weeks Pregnant - Blueberry

Size: 0.5 inches (1.3 cm)  |   Weight: less than 1 gram
We can start to see eye coloring, eye lids, and a bit of the tip of the nose... [more]
Your baby is the size of a blueberry at 7 weeks pregnant - Pregnancy Week By Week

8 Weeks Pregnant - Raspberry

Size: 0.63 inches (1.6 cm)  |   Weight: 0.04 ounce (1 gram)
Tiny hands and feet have developed from the arm and leg buds... [more]
Your baby is the size of a raspberry at 8 weeks pregnant - Pregnancy Week By Week

9 Weeks Pregnant - Green Grape

Size: 0.9 inches (2.3 cm)  |   Weight: 0.07 ounce (2 grams)
Development continues as the baby's organs are finalizing development in preparation... [more]
Your baby is the size of a green grape at 9 weeks pregnant - Pregnancy Week By Week

10 Weeks Pregnant - Kumquat

Size: 1.22 inches (3.1 cm)  |   Weight: 0.14 ounce (4 grams)
Your baby can now swim through amniotic fluid and will begin to take practice breaths... [more]
Your baby is the size of a kumquat at 10 weeks pregnant - Pregnancy Week By Week

11 Weeks Pregnant - Lime

Size: 1.61 inches (4.1 cm)  |   Weight: 0.25 ounce (7 grams)
Tiny fingernails are now developing on tiny fingers and will continue to slowly grow... [more]
Your baby is the size of a lime at 11 weeks pregnant - Pregnancy Week By Week

12 Weeks Pregnant - Plum

Size: 2.13 inches (5.4 cm)  |   Weight: 0.49 ounce (14 grams)
Activity is the word this week as baby starts to move arms and legs... [more]
Your baby is the size of a plum at 12 weeks pregnant - Pregnancy Week By Week

13 Weeks Pregnant - Peach

Size: 2.91 inches (7.4 cm)  |   Weight: 0.81 ounce (23 grams)
Baby's fingers and toes are clearly separated and her eyes are... [more]
Your baby is the size of a peach at 13 weeks pregnant - Pregnancy Week By Week
First Trimester | Second Trimester | Third Trimester

** Weeks 3 to 20 - Baby's size measurements are from crown to rump.
*** Weeks 21 to 40 - Baby's size measurements are from crown to heel.

Community Comments (3)

Comment from Addie02 » Posted Jul. 30, 2012 7:07pm
And since when is a green onion bigger than a zucchini? And WHY a zucchini? I've seen some as small as my thumb and others bigger than my arm! Find a more consistent veggie!


Comment from CASH1281 » Posted Jul. 28, 2012 8:02pm
DH said the same thing.....

Comment from monroezelda » Posted Jul. 28, 2012 10:11am
I think its weird the way at 11 weeks its a lime then 12 its a plum, I have never seen a bigger plum then a lime :)


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