Chihuahua Puppy Growth Chart

Chihuahua Puppy Growth Chart

One of the most commonly asked question of new chihuahua owners is “How big will my Chihuahua puppy grow to be?

These is no guaranteed way to determine the actual adult weight of any Chihuahua. Genetics are a tricky thing. Even if your puppy’s parents are tiny, a great-great-great grandparent may have been three pounds heavier. Genes can be passed down from as far back as seven generations.

We use this chart as a guide to determine the estimated adult weight of our chihuahua puppies. We also track dog’s pedigrees to help us reach a much better estimate for our puppies’ adult weights but there are additional factors beyond genetics that come into play when making calculations: The activity level of the dog and if the dog receives proper nutrition.

The Chihuahua Weight Chart is a tool that can be used to help with the estimating of weight that a Chi puppy will reach once full grown. Again, this chart is no guarantee but it helps hone in on a more accurate estimate – Usually within 1/2 pound.

Birth oz
2¾ oz
3 oz
3½ oz
4 oz
4¼ oz
4½ oz
5 oz
5½ oz
6 oz
6½ oz
1 week 3¾oz 4oz 5oz 5½ oz 6½oz 7oz 8oz 9oz 9½ oz 10¼oz 11oz
2 weeks 5oz 5½ oz 6½ oz 7oz 9oz 10oz 11oz 12½oz 13½oz 14½ oz 1lb
3 weeks 6oz 7oz 8oz 9oz 11oz 13 14 1lb 1lb 1½ oz 1lb 2½ oz 1lb 4oz
4 weeks 7oz 8oz 9½oz 11oz 13oz 15 1lb 1oz 1lb 3oz 1lb 5oz 1lb 7oz 1lb 8oz
5 weeks 8oz 9oz 11oz 13oz 15oz 1lb 1oz 1lb 3½ oz 1lb 6oz 1lb 8oz 1lb 11oz 1lb 13oz
6 weeks 9oz 11oz 12½ oz 15oz 1lb 1½ oz 1lb 4oz 1lb 6oz 1lb 10oz 1lb 12oz 1lb 14oz 2lb
7 weeks 10oz 12oz 14½ oz 1lb 1oz 1lb 3½ oz 1lb 6oz 1lb 8½ oz 1lb 11oz 1lb 14oz 2lb 1oz 2lb 3oz
8 weeks 11oz 13oz 1lb 1lb 3oz 1lb 5½ oz 1lb 8oz 1lb 11oz 1lb 13oz 2lb 1oz 2lb 4oz 2lb 7oz
9 weeks 12oz 15oz 1lb 1½ oz 1lb 4oz 1lb 7oz 1lb 10oz 1lb 13oz 2lb 2lb 3oz 2lb 7oz 2lb 10oz
10 weeks 13oz 1lb 1lb 3oz 1lb 6oz 1lb 9oz 1lb 12oz 1lb 15oz 2lb 2oz 2lb 6oz 2lb 9oz 2lb 13oz
11 weeks 14oz 1lb 1oz 1lb 5oz 1lb 8oz 1lb 11oz 1lb 15oz 2lb 2oz 2lb 5oz 2lb 8oz 2lb 13oz 3lb 1oz
12 weeks 15oz 1lb 3oz 1lb 6oz 1lb 10oz 1lb 14oz 2lb 1oz 2lb 5oz 2lb 9oz 2lb 13oz 3lb 1oz 3lb 5oz
13 weeks 1lb 1lb 4oz 1lb 8oz 1lb 12oz 2lb 2lb 4oz 2lb 8oz 2lb 12oz 3lb 1oz 3lb 5oz 3lb 9oz
14 weeks 1lb 1oz 1lb 6oz 1lb 10oz 1lb 14oz 2lb 2oz 2lb 7oz 2lb 11oz 2lb 15oz 3lb 4oz 3lb 8oz 3lb 12oz
15 weeks 1lb 3oz 1lb 7oz 1lb 12oz 2lb 2lb 5oz 2lb 9oz 2lb 14oz 3lb 3oz 3lb 8oz 3lb 13oz 4lb 1oz
16 weeks 1lb 4oz 1lb 9oz 1lb 14oz 2lb 2oz 2lb 7oz 2lb 12oz 3lb 1oz 3lb 6oz 3lb 11oz 4lb 1oz 4lb 6oz
17 weeks 1lb 5oz 1lb 10oz 1lb 15oz 2lb 4oz 2lb 9oz 2lb 14oz 3lb 3oz 3lb 9oz 3lb 14oz 4lb 3oz 4lb 8oz
18 weeks 1lb 6oz 1lb 12oz 2lb 1oz 2lb 5oz 2lb 11oz 3lb 3lb 6oz 3lb 12oz 4lb 1oz 4lb 7oz 4lb 12oz
19 weeks 1lb 7oz 1lb 13oz 2lb 2oz 2lb 7oz 2lb 12oz 3lb 2oz 3lb 8oz 3lb 14oz 4lb 3oz 4lb 8oz 4lb 13oz
20 weeks 1lb 8oz 1lb 14oz 2lb 3oz 2lb 9oz 2lb 14oz 3lb 4oz 3lb 10oz 4lb 4lb 6oz 4lb 12oz 5lb 1oz
21 weeks 1lb 9oz 1lb 15oz 2lb 4oz 2lb 10oz 3lb 3lb 6oz 3lb 12oz 4lb 2oz 4lb 8oz 4lb 14oz 5lb 4oz
22 weeks 1lb 9oz 2lb 2lb 5oz 2lb 11oz 3lb 1oz 3lb 8oz 3lb 14oz 4lb 4oz 4lb 10oz 5lb 5lb 6oz
23 weeks 1lb 10oz 2lb 1oz 2lb 6oz 2lb 12oz 3lb 2oz 3lb 9oz 4lb 4lb 6oz 4lb 12oz 5lb 2oz 5lb 8oz
24 weeks 1lb 10oz 2lb 1oz 2lb 7oz 2lb 13oz 3lb 3oz 3lb 10oz 4lb 1oz 4lb 7oz 4lb 14oz 5lb 4oz 5lb 10oz
25 weeks 1lb 11oz 2lb 2oz 2lb 8oz 2lb 14oz 3lb 4oz 3lb 11oz 4lb 2oz 4lb 8oz 4lb 15oz 5lb 6oz 5lb 13oz
6 months 1lb 11oz 2lb 2oz 2lb 8oz 2lb 15oz 3lb 5oz 3lb 12oz 4lb 3oz 4lb 9oz 5lb 5lb 7oz 5lb 14oz
Grown 2 lbs 2½ lbs 3 lbs 3½ lbs 4 lbs 4½ lbs 5 lbs 5½ lbs 6 lbs 6½ lbs 7 lbs
Tiny Sizes
Tiny Toy Sizes
Toy Sizes

This chart is in pounds and ounces. Using a food scale along with this chart you can watch the progress of your Chihuahua puppy’s growth.

Please note that most veterinarian offices use scales that do not include ounces, only pounds. When they tell you precious Chi weighed 2.3 pounds at their most recent checkup, that is NOT 2 pounds 3 ounces. You will need to convert those 10ths of a pound to ounces.

Here is a chart to help with your conversion:

1 oz. = .0625 of a pound
2 oz. = .125 of a pound
3 oz. = .1875 of a pound
4 oz. = .25 of a pound
5 oz. = .3125 of a pound 6 oz. = .375 of a pound
7 oz. = .4375 of a pound
8 oz. = .5 of a pound
9 oz. = .5625 of a pound
10 oz. = .625 of a pound 11 oz. = .6875 of a pound
12 oz. = .75 of a pound
13 oz. = .8125 of a pound
14 oz. = .875 of a pound
15 oz. = .9375 of a pound

Reference: figgyschihuahuas.com

Credits: The original chart that I converted from ounces into pounds and ounces is © Colonel V. D’Oyly Harmer. The weight chart is from a book called “The Complete Chihuahua Encyclopedia” by Hilary Harmar. Published in 1972 by the Arco Publishing Company, inc. in New York, NY.