Chihuahua Weight Chart

The Chihuahua weight chart is a great tool for estimating the adult weight of a Chihuahua puppy within a quarter pound. Keep in mind there are multiple factors which can affect the mature weight of your puppy such as genetics, food, and environment. Weight estimates become more accurate after a puppy reaches 8 weeks because young puppies are often over weight from their mother’s rich milk and lack of exercise. Around 4 weeks old, puppies become more stable and begin to run and play. Because of the added exercise, they usually begin to slim down to their optimal weight around 7-8 weeks old. At Sweetie Pie Pets, our method of determining Chihuahua weight estimates is to weigh them at 4 weeks, 5 weeks, 6 weeks, 7 weeks and 8 weeks old and chart their growth. If they remain in or near the same column then it’s an excellent indication they will stay on that growth curve for the remainder of their growing months. The table below is used as an estimating guide only. It is from a book called “The Complete Chihuahua Encyclopedia” by Hilary Harmar

Birth

2.5 oz

2.75 oz

3 oz

3.5 oz

4 oz

4.25 oz

4.5 oz

5 oz

5.5 oz

1 week 3.75 oz 4 oz 5 oz 5.5 oz 6.5 oz 7 oz 8 oz 9 oz 9.5 oz
2 weeks 5 oz 5.5 oz 6.5 oz 7 oz 9 oz 10 oz 11 oz 12.5 oz 13.5 oz
3 weeks 6 oz 7 oz 8 oz 9 oz 11 oz 13 oz 14 oz 16 oz 17.5 oz
4 weeks 7 oz 8 oz 9.5 oz 11 oz 13 oz 15 oz 17 oz 19.5 oz 21 oz
5 weeks 8 oz 9 oz 11 oz 13 oz 15 oz 17 oz 19.5 oz 22 oz 24 oz
6 weeks 9 oz 11 oz 12.5 oz 15 oz 17.5 oz 20 oz 22 oz 24 oz 27 oz
7 weeks 10 oz 12 oz 14.5 oz 17 oz 19.5 oz 22 oz 24.5 oz 27 oz 30 oz
8 weeks 11 oz 13 oz 16 oz 19 oz 21.5 oz 24 oz 27 oz 29 oz 33 oz
9 weeks 12 oz 15 oz 17.5 oz 20 oz 23 oz 26 oz 29 oz 32 oz 35 oz
10 weeks 13 oz 16 oz 19 oz 22 oz 25 oz 28 oz 31 oz 34 oz 38 oz
11 weeks 14 oz 17 oz 21 oz 24 oz 27 oz 31 oz 34 oz 37 oz 42 oz
12 weeks 15 oz 19 oz 22 oz 26 oz 30 oz 33 oz 37 oz 41 oz 45 oz
13 weeks 16 oz 20 oz 24 oz 28 oz 32 oz 36 oz 40 oz 44 oz 49 oz
14 weeks 17 oz 22 oz 26 oz 30 oz 34 oz 39 oz 43 oz 47 oz 52 oz
15 weeks 19 oz 23 oz 28 oz 32 oz 37 oz 41 oz 46 oz 51 oz 56 oz
16 weeks 20 oz 25 oz 30 oz 34 oz 39 oz 44 oz 49 oz 54 oz 59 oz
17 weeks 21 oz 26 oz 31 oz 36 oz 41 oz 46 oz 51 oz 57 oz 62 oz
18 weeks 22 oz 28 oz 33 oz 37 oz 43 oz 48 oz 54 oz 60 oz 65 oz
19 weeks 23 oz 29 oz 34 oz 39 oz 44 oz 50 oz 56 oz 62 oz 67 oz
20 weeks 24 oz 30 oz 35 oz 41 oz 46 oz 52 oz 58 oz 64 oz 70 oz
21 weeks 25 oz 31 oz 36 oz 42 oz 48 oz 54 oz 60 oz 66 oz 72 oz
22 weeks 25 oz 32 oz 37 oz 43 oz 49 oz 56 oz 62 oz 68 oz 74 oz
23 weeks 26 oz 33 oz 38 oz 44 oz 50 oz 57 oz 64 oz 70 oz 76 oz
24 weeks 26 oz 33 oz 39 oz 45 oz 51 oz 58 oz 65 oz 71 oz 78 oz
25 weeks 27 oz 34 oz 40 oz 46 oz 52 oz 59 oz 66 oz 72 oz 79 oz
26 weeks 27 oz 34 oz 40 oz 47 oz 53 oz 60 oz 67 oz 73 oz 80 oz
18 Months
(full grown)
2 lbs 2.5 lbs 3 lbs 3.5 lbs 4 lbs 4.5 lbs 5 lbs 5.5 lbs 6 lbs