Fetal Growth Calculator


First day of your Last Menstrual Period

You are now in 17th week of your pregnancy and the fetal age is 16 weeks, 3 days.

In this pregnancy week ...
  • Baby is now growing quickly that in just last two weeks, the baby is about as wide as your palm, and its weight has doubled. Baby now weighs more than your placenta.
  • Baby is now covered with a downy layer of lanugo, baby skin is still thin with skin stretched tautly over its little body, and blood vessels which are supplying baby with oxygenated blood are visible through its translucent skin.
  • Brown fat, a special type of fat that plays important role in body heat generation and these will help baby maintain their body temperature when they are born, is being deposited. By end of pregnancy this will account for 2-6% of their total body weight.
  • Lot of calcium is been added to the babies bones and the bones are continuously becoming denser and stronger. Mother should add lot of dairy and calcium rich food in their diet.
  • If the baby is girl, her ovaries will contain all the eggs she will have in her lifetime which is around 3 million. For baby boy, testicles are still sitting high up in his abdomen. Tiny nipples are starting to become visible on baby's chest wall.
  • Baby's primary or deciduous teeth have formed in their gums; baby can yawn, stretch and make facial grimaces, move and exercise but still sleeps a lot. Baby is now forming unique fingerprint.
  • Baby can now listen sound and mother should now onwards stay away from loud and high pitch sound as the loud noises outside may actually cause the baby to startle.
  • Baby will grow to average length of about 5.12 inches or 13 centimeter Crown to Rump (CR) and weighs about 4.94 ounces or 140 grams towards the ends of this week.

First trimester starts on very first day of your last menstrual cycle on 06-Jan-2025 and ends on 31-Mar-2025

Second trimester is from 01-Apr-2025 to 14-Jul-2025

While Third trimester begins 15-Jul-2025 onwards.

The expected date of birth of your baby is 13-Oct-2025, however depending upon fetal growth and your age, the baby may be born between 29-Sep-2025 and 20-Oct-2025.

Note: Information provided above is for general education only, growth of baby inside womb depends upon many factor and growth of your baby may differ slightly than indicated above, please seek medical advice whenever in doubt.

◄ Growth in Week 16Growth in Week 18  ► 
Jun - 2024
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Sep - 2024
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2930     
Nov - 2024
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Feb - 2025
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      1
2345678
9101112131415
16171819202122
232425262728 
Mar - 2025
SuMoTuWeThFrSa
      1
2345678
9101112131415
16171819202122
23242526272829
3031     
Apr - 2025
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Pregnancy Trimesters
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