Medium Dog Weight Chart

Medium Dog Weight Chart by Age

This medium breed puppy growth chart covers dogs whose adult weight lands between 24 and 51 lb (11–23 kg). Use it when you know roughly how big your puppy will get but not the breed — a mixed breed, or a breed without its own chart here yet. The curve comes from veterinary records of millions of young dogs, grouped by adult size rather than by breed.

Medium breed weight chart by age

Medium breed puppy growth chart: the weight span for a dog whose adult weight will fall between 24 and 51 lb.
Age	Weight range	% of adult
2 months	7–14 lb3.1–6.3 kg	28%
3 months	11–22 lb4.8–9.8 kg	43%
4 months	14–28 lb6.2–12.9 kg	56%
5 months	16–34 lb7.3–15.6 kg	67%
6 months	18–39 lb8.1–17.5 kg	75%
8 months	21–44 lb9.3–19.9 kg	86%
10 months	22–47 lb9.9–21.2 kg	91%
12 months	22–47 lb10–21.2 kg	92%
18 months	24–50 lb10.7–22.7 kg	98%
24 months	24–51 lb11–23 kg	100%

Each row spans the whole class, from the lightest medium females to the heaviest males. If you know the breed, its own page narrows this considerably.

How medium breeds compare

Every medium breed on the site, side by side. Ranges cover both sexes; each breed page splits them.
Breed	3 months	6 months	12 months	Adult
Border Collie	13–24 lb	22–42 lb	27–51 lb	30–55 lb
Siberian Husky	15–26 lb	26–46 lb	32–55 lb	35–60 lb

When to use a breed chart instead

If you know the breed, go to its page. The class chart above has to cover every medium breed at once, so its range is wide by necessity; a breed page scales the same curve to that breed’s own adult weight range from the American Kennel Club standard and splits it by sex, which typically halves the range. Use this page when the breed is unknown or mixed, and the breed page when it is not.

Every medium breed with a chart on this site is listed below.

Other size classes

Estimate your puppy’s adult weight All size classes

Growth curves derived from Salt et al. (2017), used under CC BY 4.0. The full table and method are published here. The source records contain no breeds averaging between 14 and 23 kg, so the medium-class curve is interpolated and less certain than the others.

Siberian Husky Weight Chart by Age

Siberian Husky weight chart by month. Males reach 45.0–60.0 lb (20.4–27.2 kg), females 35.1–50.0 lb (15.9–22.7 kg). Month-by-month healthy ranges from 8 weeks.