Fetal Growth Calculator


First day of your Last Menstrual Period

You are now in 20th week of your pregnancy and the fetal age is 19 weeks, 6 days.

In this pregnancy week ...
  • Baby is growing rapidly and now started building its own immunity and slowly their immunities are becoming self sustainable and are being slowly transferred from you.
  • Lanugo forms from sebum and skin cells to create vernix, this is a creamy white substance coating that protects the tender skin from its aqueous environment. Sweat glands are now formed.
  • Baby’s external ears are now perfectly formed; they are designed to channel sound waves towards the inner ear where noise can already be heard. This is why it is important to talk to your baby every day, so it can learn to recognize your voice and become familiar when born.
  • You may be aware of sleep-wake cycles in your little one. There are lots of baby‘s movements from this week onwards and thought they are not strong enough to cause you any discomfort, the strengths of these movements and their frequency keeps increasing every week.
  • Baby is now surrounded by around 320ml of amniotic fluid; the temperature of the fluid is slightly higher than your own core temperature, this helps the baby to stay warmer.
  • Baby will grow to average length of about 6.46 inches or 16.4 centimeter Crown to Rump (CR) or 10.08 inches or 25.6 centimeter Crown to Heel and weighs about 10.58 ounces or 300 grams towards the ends of this week.

First trimester starts on very first day of your last menstrual cycle on 22-Dec-2023 and ends on 15-Mar-2024

Second trimester is from 16-Mar-2024 to 28-Jun-2024

While Third trimester begins 29-Jun-2024 onwards.

The expected date of birth of your baby is 27-Sep-2024, however depending upon fetal growth and your age, the baby may be born between 13-Sep-2024 and 04-Oct-2024.

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 19Growth in Week 21  ► 
Jul - 2023
SuMoTuWeThFrSa
      1
2345678
9101112131415
16171819202122
23242526272829
3031     
Sep - 2023
SuMoTuWeThFrSa
     12
3456789
10111213141516
17181920212223
24252627282930
Nov - 2023
SuMoTuWeThFrSa
   1234
567891011
12131415161718
19202122232425
2627282930  
Dec - 2023
SuMoTuWeThFrSa
     12
3456789
10111213141516
17181920212223
24252627282930
31      
Feb - 2024
SuMoTuWeThFrSa
    123
45678910
11121314151617
18192021222324
2526272829  
Mar - 2024
SuMoTuWeThFrSa
     12
3456789
10111213141516
17181920212223
24252627282930
31      
Apr - 2024
SuMoTuWeThFrSa
 123456
78910111213
14151617181920
21222324252627
282930    
May - 2024
SuMoTuWeThFrSa
   1234
567891011
12131415161718
19202122232425
262728293031 
Pregnancy Trimesters
»  First Trimester
»  Second Trimester
»  Third Trimester
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