Ideal Weights for Twins

What are the ideal weights for twins during pregnancy ?

As you progress through your twin pregnancy, you're likely going to be receiving many updates from your doctor through ultrasounds and other scientific methods on the weights of 'Baby A' and 'Baby B'. It's very exciting to follow along, even though the results aren't always perfectly accurate, they do give you a pretty good idea how your babies are doing. Make sure that you keep a calendar to mark off all the milestones you reach !

Print off the chart below so that you can know where you're at. It can be very reassuring.

If you are having a complicated pregnancy or are on bedrest- either complete or modified, this table can help to reassure you of the sizes of your babies as the pregnancy progresses. You can see the importance of each week in terms of your babies ideal weights for twins.

While the chart below indicates average gestational weights for a singleton pregnancy, your twins are likely to be close in weight to the chart below if they are measuring at the average levels. The following below table was taken from 'Ultrasound in Pregnancy: A Book for Parents and Parents-To-Be' by Dr. Applebaum. The table is just meant to be an average weight and should not be construed as medical advice of any type. The final authority on the proper weights of your babies should always be your OB-GYN doctor or midwife.

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