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 |
Consider too, if you find that you are going to have the babies early, for whatever reason, knowing their approximate sizes can help you prepare for having premature babies.
Make sure that you know and understand the signs of preterm labor, as many times, if you can catch it early enough, there are ways to prevent the twin babies from arriving way too early. Understanding the chart of ideal weights for twins in pregnancy, can help to understand the importance of keeping those babies in as long as you possibly can ! As you mark off each day on the calendar , you’ll be able to see on the ideal weights for twins chart, just where your babies are at, and be able to celebrate each milestone along the way. Every day counts!