Source of this information

Baby's Growth
Average Growth of baby in Grams (1 lb = 454 grams)
Expected Fetal Weight plus+/minus
 10th and 90th%tile


 
Avg
    
Weeks
EFW
10th%
90th%
16
146
121
171
17
181
150
212
18
223
185
261
19
273
227
319
20
331
275
387
21
399
331
467
22
478
398
559
23
568
471
665
24
670
556
784
25
785
652
918
26
913
758
1068
27
1055
876
1234
28
1210
1004
1416
29
1379
1145
1613
30
1559
1294
1824
31
1751
1453
2049
32
1953
1621
2285
33
2162
1794
2530
34
2377
1973
2781
35
2595
2154
3036
36
2813
2335
3291
37
3028
2513
3543
38
3236
2686
3786
39
3435
2851
4019
40
3619
3004
4234
                   Last Updated on 6/20/99 By Amos Grunebaum, MD
 



 
 

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