Pregnancy Pregnancy Development Stages Fetal Development How Big Is Your Baby in Second Trimester? Wonder how big your baby is now? Here's an approximate look at size, weight and height in the second trimester. By Parents Editors Published on May 15, 2006 Share Tweet Pin Email Trending Videos 01 of 14 Week 14 Baby's Length: 3.25-4 in. Baby's Weight: 1-1.50 oz. Baby's Size: Peach All length measurements in the second trimester are considered crown to rump (head to butt) because your baby's still too small to get an accurate head-to-toe assessment. My Growing Belly: Month 4 Free Weekly Ages & Stages Newsletter! Free Daily Kick Pregnancy Newsletter! 02 of 14 Week 15 Baby's Length: 4-4.5 in Baby's Weight: 1.5-2 oz. Baby's Size: Lemon MY Growing Belly: Month 4 Free Weekly Ages & Stages Newsletter! Free Daily Kick Pregnancy Newsletter! 03 of 14 Week 16 Baby's Length: 4.5-5 in Baby's Weight: 2.5- 3 oz.. Baby's Size: Rubber Ducky My Growing Belly: Month 4 Free Weekly Ages & Stages Newsletter! Free Daily Kick Pregnancy Newsletter! 04 of 14 Week 17 Baby's Length: 4.5-5 in Baby's Weight: 3-5 oz. Baby's Size: Beanie Baby My Growing Belly: Month 4 Free Weekly Ages & Stages Newsletter! Free Daily Kick Pregnancy Newsletter! 05 of 14 Week 18 Shawn Vincent - Fotolia.com Baby's Length: 5-5.5 in. Baby's Weight: 5-7 oz. Baby's Size: Soda Can My Growing Belly: Month 5 Free Weekly Ages & Stages Newsletter! Free Daily Kick Pregnancy Newsletter! 06 of 14 Week 19 Baby's Length: 5.5 - 6 in. Baby's Weight: 7-9 oz. Baby's Size: Grapefruit My Growing Belly: Month 5 Free Weekly Ages & Stages Newsletter! Free Daily Kick Pregnancy Newsletter! 07 of 14 Week 20 Baby's Length: 6-6.5 in. Baby's Weight: 9-10 oz. Baby's Size: Coconut My Growing Belly: Month 5 Free Weekly Ages & Stages Newsletter! Free Daily Kick Pregnancy Newsletter! 08 of 14 Week 21 Baby's Length: 6.5-7.0 in. Baby's Weight: 10-13 oz. Baby's Size: Cantaloupe My Growing Belly: Month 5 Free Weekly Ages & Stages Newsletter! Free Daily Kick Pregnancy Newsletter! 09 of 14 Week 22 Baby's Length: 7-7.5 in. Baby's Weight: 1 lb. Baby's Size: 1 lb. bag of coffee beans My Growing Belly: Month 5 Free Weekly Ages & Stages Newsletter! Free Daily Kick Pregnancy Newsletter! 10 of 14 Week 23 Baby's Length: 7.5-8.0 in. Baby's Weight: 1-1.25 lbs. Baby's Size: Loaf of bread My Growing Belly: Month 6 Free Weekly Ages & Stages Newsletter! Free Daily Kick Pregnancy Newsletter! 11 of 14 Week 24 Uyen Le - Fotolia.com Baby's Length: 8-8.5 in. Baby's Weight: 1.25 - 1.5 lb. Baby's Size: 1/2 Gallon of Milk My Growing Belly: Month 6 Free Weekly Ages & Stages Newsletter! Free Daily Kick Pregnancy Newsletter! 12 of 14 Week 25 Baby's Length: 8.5-9 in. Baby's Weight: 1.5-2 lbs. Baby's Size: 5 lb. bag of flour My Growing Belly: Month 6 Fetal Development: Month 6 Free Weekly Ages & Stages Newsletter! Free Daily Kick Pregnancy Newsletter! 13 of 14 Week 26 Baby's Length: 9-9.25 in. Baby's Weight: 2 lb. Baby's Size: Liter of soda My Growing Belly: Month 6 Free Weekly Ages & Stages Newsletter! Free Daily Kick Pregnancy Newsletter! 14 of 14 Week 27 Baby's Length: 9.25-9.50 in. Baby's Weight: 2-2.25 lbs. Baby's Size: Sock Monkey 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. My Growing Belly: Month 6 Free Weekly Ages & Stages Newsletter! Free Daily Kick Pregnancy Newsletter! Was this page helpful? Thanks for your feedback! Tell us why! Other Submit