How Big Is Your Baby in Third Trimester?

Veer Images
Wonder how big your baby is now? Here's an approximate look at size, weight and height in the third trimester.
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Week 28

Warren Millar - Fotolia.com

Baby's Length: 15.25-15.75 in.

Baby's Weight: 2.25-2.5 lbs.

Baby's Size: Pair of sneakers

All length measurements in the third trimester are now full-length (instead of just head-to-butt), because your baby's big enough to describe them more accurately!

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2 of 13

Week 29

Baby's Length: 15.75-16.25 in.

Baby's Weight: 2.5-2.75 lbs.

Baby's Size: Basketball

3 of 13

Week 30

Anton Gvozdikov - Fotolia.com

Baby's Length: 16.25-17 in.

Baby's Weight: 3 lbs.

Baby's Size: Thick Wool Sweater, Folded

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4 of 13

Week 31

John Steel - Fotolia.com

Baby's Length: 17-18 in.

Baby's Weight: 3.5 lbs.

Baby's Size: Soccer ball

5 of 13

Week 32

Michael Rí¶hrich - Fotolia.com

Baby's Length: 18-19 in.

Baby's Weight: 4 lb.

Baby's Size: 5-lb. bag of potatoes

6 of 13

Week 33

James Cox - Fotolia.com

Baby's Length: 19-19.5 in.

Baby's Weight: 4.5 lbs.

Baby?s Size: Medicine ball

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7 of 13

Week 34

Baby's Length: 19.5-20 in.

Baby's Weight: 5 lbs.

Baby's Size: Medium pumpkin

8 of 13

Week 35

Baby's Length: 20-20.5 in.

Baby's Weight: 5.5 lbs.

Baby's Size: Throw pillow

9 of 13

Week 36

Baby's Length: 20.25-20.75 in.

Baby's Weight: 6 lbs.

Baby's Size: Beach ball

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10 of 13

Week 37

Baby's Length: 20.75-21 in.

Baby's Weight: 6.5 lbs.

Baby's Size: Diaper bag

11 of 13

Week 38

Baby's Length: 21-21.5 in.

Baby's Weight: 6.5-7 lbs.

Baby's Size: Watermelon

12 of 13

Week 39

Veer Images

Baby's Length: 21.5 in.

Baby's Weight: 7-7.5 lbs.

Baby's Size: Newborn

All content on this Web site, including medical opinion and any other health-related information, is for informational purposes only and should not be considered to be a specific diagnosis or treatment plan for any individual situation. Use of this site and the information contained herein does not create a doctor-patient relationship. Always seek the direct advice of your own doctor in connection with any questions or issues you may have regarding your own health or the health of others.

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