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Summary of your baby's growth during pregnancy.   

 

 

How much weight should your partner gain during her pregnancy?

Exceptions to the general weight gain rules in pregnancy.

What makes up the extra weight gained whilst pregnant?

How much weight should be taken at each stage of pregnancy?

Summary of your baby's growth during pregnancy.

Try out the Weight Gain Calculator

 

 

 

This graph shows the weight and size of a foetus as it grows in the womb.  Notice how the weight gain is more rapid towards the end of the pregnancy whilst the linear growth remains fairly steady throughout.  Details follow in the table below.

 

 

 

The table below shows the details of these averaged sizes of a growing baby during the 38 weeks of pregnancy:  

 

Time from conception  Weight in metric  Size in metric  Weight in pounds  Size in inches 
2 weeks   0.1 to 0.2 mm    
3 weeks   0.2 to 0.5 mm   0.01
4 weeks   4 to 5 mm   0.16
5 weeks   5 to 7 mm   0.20
6 weeks 1.5 g 9 to 14 mm   0.39
7 weeks 2 g 17 to 22 mm   0.79
8 weeks 3 g 3.0 cm 0.01 1.18
9 weeks 10 g 5.5 cm 0.02 2.17
10 weeks 20 g 7.5 cm 0.04 2.95
11 weeks 30 g 8.5 cm 0.07 3.35
12 weeks 45 g 10.0 cm 0.10 3.94
13 weeks 65 g 12.0 cm 0.14 4.72
14 weeks 110 g 14.0 cm 0.24 5.51
15 weeks 135 g 16.0 cm 0.30 6.30
16 weeks 160 g 17.5 cm 0.35 6.89
17 weeks 200 g 19.0 cm 0.44 7.48
18 weeks 250 g 20.0 cm 0.55 7.87
19 weeks 270 g 21.0 cm 0.59 8.27
20 weeks 380 g 22.5 cm 0.84 8.86
21 weeks 450 g 24.0 cm 0.99 9.45
22 weeks 500 g 26.0 cm 1.10 10.24
23 weeks 550 g 28.0 cm 1.21 11.02
24 weeks 650 g 30.0 cm 1.43 11.81
25 weeks 750 g 32.0 cm 1.65 12.60
26 weeks 850 g 33.0 cm 1.87 12.99
27 weeks 1000 g 34.0 cm 2.20 13.39
28 weeks 1150 g 35.0 cm 2.53 13.78
29 weeks 1300 g 36.0 cm 2.86 14.17
30 weeks 1500 g 37.0 cm 3.30 14.57
31 weeks 1700 g 39.0 cm 3.74 15.35
32 weeks 1900 g 40.5 cm 4.18 15.94
33 weeks 2100 g 42.0 cm 4.62 16.54
34 weeks 2300 g 43.0 cm 5.06 16.93
35 weeks 2500 g 45.0 cm 5.50 17.72
36 weeks 2700 g 46.5 cm 5.94 18.31
37 weeks 2900 g 48.0 cm 6.38 18.90
38 weeks 3000 g 50.0 cm 6.60 19.69

 

 

 

How much weight should your partner gain during her pregnancy?

Exceptions to the general weight gain rules in pregnancy.

What makes up the extra weight gained whilst pregnant?

How much weight should be taken at each stage of pregnancy?

Summary of your baby's growth during pregnancy.

Try out the Weight Gain Calculator

 

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