Puppy Growth Chart: Weight by Age for Every Size
A puppy growth chart is a table of the bodyweight a puppy is expected to reach at each age, broken down by the adult size class it will grow into. You use it to check whether a puppy is tracking a healthy curve, not to pin down an exact adult number. Every table on this page is generated from the same size-class growth curves as our puppy weight calculator, shows both pounds and kilograms, and reports the percentage of adult weight reached at that age.
At what age do puppies reach 50% of their adult weight?
There is no single answer, because it depends on how big the dog will end up. Larger breeds spend longer growing, so at any given age they are a smaller fraction of their final weight. A puppy is halfway to its adult weight at roughly:
| Size class | Halfway point | In months | Adult weight |
|---|---|---|---|
| Toy | 15 weeks | 3.5 months | 3-12 lb1.4-5.4 kg |
| Small | 16 weeks | 3.8 months | 12-25 lb5.4-11 kg |
| Medium | 18 weeks | 4.1 months | 25-50 lb11-23 kg |
| Large | 19 weeks | 4.4 months | 50-90 lb23-41 kg |
| Giant | 21 weeks | 4.8 months | 90-180 lb41-82 kg |
This is the single most common mistake in puppy weight estimates: applying one rule of thumb, such as doubling the weight at four months, to every dog. It is roughly right for a medium breed and clearly wrong for a Chihuahua or a Great Dane.
Puppy weight chart by age and size class
Expected weight bands at each age, across all five size classes. Each band is that class's adult weight range scaled by the share of adult weight a puppy of that class has typically reached at that age. Bands are wide on purpose: a class covers many breeds. For a tighter number, use the calculator, which narrows the range using your puppy's actual weight and, if you know them, the parents' weights.
| Age | Toy | Small | Medium | Large | Giant |
|---|---|---|---|---|---|
| 8 weeks | 0.8-3.4 lb0.4-1.5 kg | 2.8-5.8 lb1.3-2.6 kg | 4.8-9.7 lb2.2-4.4 kg | 7.7-14 lb3.5-6.2 kg | 11-21 lb4.9-9.7 kg |
| 12 weeks | 1.2-4.8 lb0.5-2.2 kg | 4.3-8.9 lb1.9-4 kg | 7.9-16 lb3.6-7.1 kg | 14-25 lb6.2-11 kg | 21-41 lb9.3-19 kg |
| 16 weeks | 1.6-6.3 lb0.7-2.9 kg | 5.9-12 lb2.7-5.5 kg | 11-22 lb5.1-10 kg | 20-37 lb9.2-17 kg | 32-64 lb14-29 kg |
| 5 months | 2-7.9 lb0.9-3.6 kg | 7.7-16 lb3.5-7.2 kg | 15-30 lb6.8-14 kg | 28-51 lb13-23 kg | 47-93 lb21-42 kg |
| 6 months | 2.2-8.9 lb1-4 kg | 8.8-18 lb4-8.3 kg | 17-35 lb7.9-16 kg | 34-61 lb15-28 kg | 56-113 lb26-51 kg |
| 9 months | 2.6-10 lb1.2-4.7 kg | 10-22 lb4.7-9.8 kg | 21-43 lb9.7-19 kg | 43-77 lb19-35 kg | 75-151 lb34-68 kg |
| 12 months | 3-12 lb1.4-5.4 kg | 11-23 lb5-10 kg | 23-45 lb10-20 kg | 45-81 lb20-37 kg | 80-160 lb36-73 kg |
| 18 months | 3-12 lb1.4-5.4 kg | 12-25 lb5.4-11 kg | 25-50 lb11-23 kg | 50-90 lb23-41 kg | 86-173 lb39-78 kg |
| 24 months | 3-12 lb1.4-5.4 kg | 12-25 lb5.4-11 kg | 25-50 lb11-23 kg | 50-90 lb23-41 kg | 90-180 lb41-82 kg |
Shaded cells are ages at which that size class has finished growing, so the band stops changing. The exact age each class gets there is in its section below.
Toy breed puppy growth chart
Toy breeds finish at roughly 3-12 lb1.4-5.4 kg and are essentially full grown by about 12 months. Typical examples: Affenpinscher, Chihuahua, Pomeranian, Yorkshire Terrier.
| Age | Expected weight | % of adult weight |
|---|---|---|
| 8 weeks | 0.8-3.4 lb0.4-1.5 kg | 28% |
| 9 weeks | 0.9-3.7 lb0.4-1.7 kg | 31% |
| 10 weeks | 1-4.1 lb0.5-1.9 kg | 34% |
| 11 weeks | 1.1-4.5 lb0.5-2 kg | 37% |
| 12 weeks | 1.2-4.8 lb0.5-2.2 kg | 40% |
| 13 weeks | 1.3-5.2 lb0.6-2.4 kg | 43% |
| 14 weeks | 1.4-5.6 lb0.6-2.5 kg | 46% |
| 15 weeks | 1.5-5.9 lb0.7-2.7 kg | 49% |
| 16 weeks | 1.6-6.3 lb0.7-2.9 kg | 52% |
| 5 months | 2-7.9 lb0.9-3.6 kg | 66% |
| 6 months | 2.2-8.9 lb1-4 kg | 74% |
| 7 months | 2.4-9.4 lb1.1-4.3 kg | 79% |
| 8 months | 2.5-10 lb1.1-4.5 kg | 83% |
| 9 months | 2.6-10 lb1.2-4.7 kg | 87% |
| 10 months | 2.7-11 lb1.2-5 kg | 91% |
| 12 months | 3-12 lb1.4-5.4 kg | 100% |
Small breed puppy growth chart
Small breeds finish at roughly 12-25 lb5.4-11 kg and are essentially full grown by about 12.9 months. Typical examples: Shih Tzu, Pug, French Bulldog, Boston Terrier.
| Age | Expected weight | % of adult weight |
|---|---|---|
| 8 weeks | 2.8-5.8 lb1.3-2.6 kg | 23% |
| 9 weeks | 3.1-6.5 lb1.4-3 kg | 26% |
| 10 weeks | 3.5-7.3 lb1.6-3.3 kg | 29% |
| 11 weeks | 3.9-8.1 lb1.8-3.7 kg | 32% |
| 12 weeks | 4.3-8.9 lb1.9-4 kg | 36% |
| 13 weeks | 4.7-9.7 lb2.1-4.4 kg | 39% |
| 14 weeks | 5.1-11 lb2.3-4.8 kg | 42% |
| 15 weeks | 5.5-11 lb2.5-5.2 kg | 46% |
| 16 weeks | 5.9-12 lb2.7-5.5 kg | 49% |
| 5 months | 7.7-16 lb3.5-7.2 kg | 64% |
| 6 months | 8.8-18 lb4-8.3 kg | 73% |
| 7 months | 9.4-20 lb4.3-8.9 kg | 78% |
| 8 months | 9.9-21 lb4.5-9.4 kg | 83% |
| 9 months | 10-22 lb4.7-9.8 kg | 86% |
| 10 months | 11-22 lb4.8-10 kg | 88% |
| 12 months | 11-23 lb5-10 kg | 92% |
| 15 months | 12-25 lb5.4-11 kg | 100% |
Medium breed puppy growth chart
Medium breeds finish at roughly 25-50 lb11-23 kg and are essentially full grown by about 13.8 months. Typical examples: Border Collie, Australian Shepherd, Staffordshire Bull Terrier, Bulldog.
| Age | Expected weight | % of adult weight |
|---|---|---|
| 8 weeks | 4.8-9.7 lb2.2-4.4 kg | 19% |
| 9 weeks | 5.6-11 lb2.5-5.1 kg | 22% |
| 10 weeks | 6.3-13 lb2.9-5.7 kg | 25% |
| 11 weeks | 7.1-14 lb3.2-6.4 kg | 28% |
| 12 weeks | 7.9-16 lb3.6-7.1 kg | 31% |
| 13 weeks | 8.7-17 lb3.9-7.9 kg | 35% |
| 14 weeks | 9.5-19 lb4.3-8.6 kg | 38% |
| 15 weeks | 10-21 lb4.7-9.4 kg | 41% |
| 16 weeks | 11-22 lb5.1-10 kg | 45% |
| 5 months | 15-30 lb6.8-14 kg | 60% |
| 6 months | 17-35 lb7.9-16 kg | 70% |
| 7 months | 19-38 lb8.6-17 kg | 76% |
| 8 months | 20-41 lb9.2-18 kg | 81% |
| 9 months | 21-43 lb9.7-19 kg | 86% |
| 10 months | 22-44 lb9.9-20 kg | 87% |
| 12 months | 23-45 lb10-20 kg | 90% |
| 15 months | 25-50 lb11-23 kg | 100% |
Large breed puppy growth chart
Large breeds finish at roughly 50-90 lb23-41 kg and are essentially full grown by about 18 months. Typical examples: Labrador Retriever, Golden Retriever, German Shepherd, Boxer.
| Age | Expected weight | % of adult weight |
|---|---|---|
| 8 weeks | 7.7-14 lb3.5-6.2 kg | 15% |
| 9 weeks | 9.2-16 lb4.2-7.5 kg | 18% |
| 10 weeks | 11-19 lb4.8-8.7 kg | 21% |
| 11 weeks | 12-22 lb5.5-9.9 kg | 24% |
| 12 weeks | 14-25 lb6.2-11 kg | 27% |
| 13 weeks | 15-28 lb7-13 kg | 31% |
| 14 weeks | 17-31 lb7.7-14 kg | 34% |
| 15 weeks | 19-34 lb8.5-15 kg | 37% |
| 16 weeks | 20-37 lb9.2-17 kg | 41% |
| 5 months | 28-51 lb13-23 kg | 57% |
| 6 months | 34-61 lb15-28 kg | 68% |
| 7 months | 37-67 lb17-30 kg | 75% |
| 8 months | 40-73 lb18-33 kg | 81% |
| 9 months | 43-77 lb19-35 kg | 85% |
| 10 months | 43-78 lb20-36 kg | 87% |
| 12 months | 45-81 lb20-37 kg | 89% |
| 15 months | 48-87 lb22-40 kg | 97% |
| 18 months | 50-90 lb23-41 kg | 100% |
Giant breed puppy growth chart
Giant breeds finish at roughly 90-180 lb41-82 kg and are essentially full grown by about 22.1 months. Typical examples: Great Dane, Mastiff, Saint Bernard, Newfoundland.
| Age | Expected weight | % of adult weight |
|---|---|---|
| 8 weeks | 11-21 lb4.9-9.7 kg | 12% |
| 9 weeks | 13-26 lb6-12 kg | 15% |
| 10 weeks | 16-31 lb7.1-14 kg | 17% |
| 11 weeks | 18-36 lb8.2-16 kg | 20% |
| 12 weeks | 21-41 lb9.3-19 kg | 23% |
| 13 weeks | 23-47 lb11-21 kg | 26% |
| 14 weeks | 26-52 lb12-24 kg | 29% |
| 15 weeks | 29-58 lb13-26 kg | 32% |
| 16 weeks | 32-64 lb14-29 kg | 35% |
| 5 months | 47-93 lb21-42 kg | 52% |
| 6 months | 56-113 lb26-51 kg | 63% |
| 7 months | 64-128 lb29-58 kg | 71% |
| 8 months | 71-141 lb32-64 kg | 79% |
| 9 months | 75-151 lb34-68 kg | 84% |
| 10 months | 77-155 lb35-70 kg | 86% |
| 12 months | 80-160 lb36-73 kg | 89% |
| 15 months | 86-173 lb39-78 kg | 96% |
| 18 months | 86-173 lb39-78 kg | 96% |
| 24 months | 90-180 lb41-82 kg | 100% |
Growth charts by breed
Size class covers a lot of ground: the large class spans everything from a Labrador to a Rottweiler. Where we have breed-specific adult weights from a breed standard, split by sex, there is a dedicated chart:
More breeds follow. We add a breed only when its adult weights can be sourced to a breed standard or kennel club by sex, rather than copied from another chart site.
Why the 8 to 16 week rows are weekly
Most growth charts jump straight from 8 weeks to 3 months. That gap covers the period when a puppy has just come home, is growing fastest in percentage terms, and is being weighed most often. It is also when an owner has the least idea what normal looks like. The tables above report every week through 16 weeks for that reason, then move to monthly rows once the curve flattens and week-to-week change stops being meaningful.
Weigh at the same time of day, on the same scales, once a week while the puppy is under four months old. A single reading tells you very little. The shape of four readings tells you almost everything a chart can.
How accurate are puppy growth charts?
For a purebred puppy whose size class you know, expect an estimate within roughly 10 to 20% of the true adult weight. For a mixed breed of unknown parentage, expect wider. Any chart or calculator that returns a single number with no range is claiming precision the underlying data does not support.
The larger error source is not the data, it is the formula. Many calculators still use
Adult weight = (current weight ÷ age in weeks) × 52, which treats growth as
a straight line. Puppy growth is not a straight line, it is an S-curve: fast early, then
flattening as the dog approaches maturity. Apply the linear rule to an 8-week-old and it
overshoots badly. Apply it to an 11-month-old and it barely moves. The percentage-of-adult-weight
method used here models the curve by size class instead, which is why a toy breed and a
giant breed get different answers at the same age. There is a fuller explanation of the
failure mode on the calculator page.
Mixed breed puppies
A mixed-breed puppy still belongs to a size class, you just have less information about which one. Parent weights are the strongest predictor you have access to, so use them if you know them. If you do not, pick the class you think is most likely, track the puppy against that curve for a few months, and let the trend correct you. Where the class is genuinely uncertain and large is plausible, feeding a large-breed puppy formula is the low-risk choice, because controlled growth protects joints while growth plates are still open. There is more on estimating from unknown parentage on the calculator page.
Puppy growth chart FAQ
At what age do puppies reach 50% of their adult weight?
It depends on size class, and that is why one answer for every dog does not work. A toy-breed puppy is halfway to its adult weight at around 15 weeks, a small breed at around 16 weeks, a medium breed at around 18 weeks, a large breed at around 19 weeks and a giant breed not until around 21 weeks. Bigger dogs spend longer growing, so they are a smaller fraction of their final weight at any given age.
When do puppies stop growing?
Toy and small breeds are essentially full grown by about 12 to 13 months. Medium breeds finish around 14 months. Large breeds keep going to roughly 18 months, and giant breeds can still be filling out at 22 to 24 months. Height stops before weight does: dogs continue to broaden and add muscle after they stop getting taller.
How accurate is a puppy growth chart?
Treat it as a band, not a target. For a purebred puppy of known size class, expect the estimate to land within roughly 10 to 20% of the real adult weight, and wider for mixed breeds of unknown parentage. A chart tells you whether a puppy is tracking its curve, which is the useful question. It cannot tell you an exact adult number, and any tool that gives you one without a range is overstating what the data supports.
Do male and female puppies follow different growth charts?
They follow the same curve shape but settle at different adult weights, and the gap widens with size. In toy breeds the difference between males and females is only a couple of percent. In giant breeds it is closer to 15%. The tables on this page are sex-neutral bands that span both; the calculator applies a size-scaled adjustment once you tell it the sex.
What if my puppy is a mixed breed?
Use the size class you expect the puppy to end up in rather than a breed, and widen your expectations. Parent weights are the single strongest predictor available to you, so if you know them, use them. If the parentage is unknown, track the puppy against the curve for a few months and let the trend tell you which class it belongs to.
Can I predict adult size from paw size?
Not reliably. Oversized paws are a loose hint that a puppy still has growing left, particularly in larger breeds where paws grow to support height and heavier bone, but paw size alone will not tell you how big a dog ends up. Age, current weight, breed and parent size all tell you far more.
Sources and methodology
The growth-completion curves behind every table on this page are size-class curves modelled on published canine growth research. The methodology page publishes the full curve as open data, compares it against FEDIAF's published equations, works through the arithmetic step by step and states plainly what has not been validated.
- Salt C, et al. (2017). "Growth standard charts for monitoring bodyweight in dogs of different sizes." PLOS ONE 12(9): e0182064.
- WALTHAM Petcare Science Institute: puppy growth charts and size-class references.
- Breed size standards from recognised kennel clubs, including the American Kennel Club (AKC).
- WSAVA Global Nutrition Committee: body condition score guidelines.
These tables are estimates for healthy puppies and are not veterinary advice. If a puppy is losing weight, has stopped gaining before 12 months, or sits well outside its band, talk to a vet.