How Big Is Your Baby in First Trimester?

May 22, 2006
Wonder how big your baby is now? Here's an approximate look at size, weight and height in the first trimester.
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Week 4

Credit: Joseph Calev - Fotolia.com

Baby's Length: <.25 in.="">

Baby's Weight: <.25 oz.="">

Baby's Size: Poppy seed

All length measurements in the first trimester are considered crown-to-rump (head-to-butt) because your baby's still too small to get an accurate head-to-toe assessment.

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Week 5

Credit: ROBYN MACKENZIE - Fotolia.com

Baby's Length: <.25 in.="">

Baby's Weight: <.25 oz.="">

Baby's Size: Peppercorn

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Week 6

Baby's Length: <.25 in="">

Baby's Length: <.25 in="">

Baby's Size: Lentil

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Week 7

Credit: Tomas Loutocky - Fotolia.com

Baby's Length: <.25-.33 in.="">

Baby's Weight: <.25 oz.="">

Baby's Size: Coffee bean

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Week 8

Baby's Length: .50 - .75 in.

Baby's Weight: <.25 oz.="">

Baby's Size: Blueberry

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Week 9

Credit: Fotolia.com

Baby's Length: 1 - 1.25 in.

Baby's Weight: <.25 oz.="">

Baby's Size: Peppermint candy

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Week 10

Baby's Length: 1.25 - 1.75 in.

Baby's Weight: <.25 oz.="">

Baby's Size: Grape

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Week 11

Credit: Peter Krumhardt

Baby's Length: 1.5 - 2.5 in.

Baby's Weight: .25 oz.

Baby's Size: California Roll

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Week 12

Baby's Length: 2.5 - 3 in.

Baby's Weight: .50 oz.

Baby's Size: Pacifier

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Week 13

Baby's Length: 2.5 - 3 in.

Baby's Weight: .50 - 1 oz.

Baby's Size: Egg

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For more comparisons, check out your baby's size in the second and third trimesters!

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