BeckyD
Me, DH, 2 twin baby girls
- Joined
- Oct 5, 2010
- Messages
- 461
- Reaction score
- 0
I copied this from another forum. I don't know where it came from originally but hope its accurate! Sorry - the table didn't copy as attractively as it could have!
The chart is specific for twins and is an estimated average of weights for gestation. Remember its an average...there will be quite a bit of difference for some ladies over and under these weights so dont worry if your babies are a bit different!
Gestational Age Weight (gm) Weight (lb/oz)
8 weeks 1.0 gm 0.035 oz
9 weeks 3.0 gm 0.11 oz
10 weeks 5.0 gm 0.18 oz
11 weeks 12.5 gm 0.44 oz
12 weeks 20 gm 0.7 oz
13 weeks 40 gm 1.4 oz
14 weeks 60 gm 2.1 oz
15 weeks 90 gm 3.2 oz
16 weeks 120 gm 4.2 oz
17 weeks 170 gm 6.0 oz
18 weeks 220 gm 7.75 oz
19 weeks 275 gm 9.7 oz
20 weeks 330 gm 11.6 oz
21 weeks 395.5 gm 13.9 oz
22 weeks 460 gm 1 lb
23 weeks 555 gm 1 lb 3 oz
24 weeks 655 gm 1 lb 7 oz
25 weeks 750 gm 1 lb 10 oz
26 weeks 850 gm 1 lb 14 oz
27 weeks 975 gm 2 lb 2 oz
28 weeks 1100 gm 2 lb 7 oz
29 weeks 1260 gm 2 lb 12 oz
30 weeks 1420 gm 3 lb 2 oz
31 weeks 1585 gm 3 lb 7 oz
32 weeks 1750 gm 3 lb 14 oz
33 weeks 1915 gm 4 lb 3 oz
34 weeks 2080 gm 4 lb 9 oz
35 weeks 2250 gm 4 lb 15 oz
36 weeks 2420 gm 5 lb 5 oz
37 weeks 2660 gm 5 lb 14 oz
38 weeks 2900 gm 6 lb 6 oz
39 weeks 3075 gm 6 lb 12 oz
40 weeks 3250 gm 7 lb 2 oz
The chart is specific for twins and is an estimated average of weights for gestation. Remember its an average...there will be quite a bit of difference for some ladies over and under these weights so dont worry if your babies are a bit different!
Gestational Age Weight (gm) Weight (lb/oz)
8 weeks 1.0 gm 0.035 oz
9 weeks 3.0 gm 0.11 oz
10 weeks 5.0 gm 0.18 oz
11 weeks 12.5 gm 0.44 oz
12 weeks 20 gm 0.7 oz
13 weeks 40 gm 1.4 oz
14 weeks 60 gm 2.1 oz
15 weeks 90 gm 3.2 oz
16 weeks 120 gm 4.2 oz
17 weeks 170 gm 6.0 oz
18 weeks 220 gm 7.75 oz
19 weeks 275 gm 9.7 oz
20 weeks 330 gm 11.6 oz
21 weeks 395.5 gm 13.9 oz
22 weeks 460 gm 1 lb
23 weeks 555 gm 1 lb 3 oz
24 weeks 655 gm 1 lb 7 oz
25 weeks 750 gm 1 lb 10 oz
26 weeks 850 gm 1 lb 14 oz
27 weeks 975 gm 2 lb 2 oz
28 weeks 1100 gm 2 lb 7 oz
29 weeks 1260 gm 2 lb 12 oz
30 weeks 1420 gm 3 lb 2 oz
31 weeks 1585 gm 3 lb 7 oz
32 weeks 1750 gm 3 lb 14 oz
33 weeks 1915 gm 4 lb 3 oz
34 weeks 2080 gm 4 lb 9 oz
35 weeks 2250 gm 4 lb 15 oz
36 weeks 2420 gm 5 lb 5 oz
37 weeks 2660 gm 5 lb 14 oz
38 weeks 2900 gm 6 lb 6 oz
39 weeks 3075 gm 6 lb 12 oz
40 weeks 3250 gm 7 lb 2 oz
based on those numbers my bigger twin was right on for 37 weeks and my smaller twin was bout right for 34 weeks, even with only recieving 25% of the placental share when delivered at 34 weeks.
