Puppy Weight Chart by Age and Breed Size

Puppy weight chart: the quick answer

There is no single correct puppy weight for every dog of the same age. Start with expected adult size: smaller dogs complete a greater share of their growth earlier, while large and extra-large dogs usually keep developing for longer.

The chart below compares puppies at 6, 9, 12, 15, and 18 months. It shows the approximate percentage of adult weight reached at each checkpoint. If you already have a reasonable adult-weight estimate, the existing helper converts those percentages into both kilograms and pounds.

For younger puppies, use the 8-week through 5-month guidance below and focus on the direction of repeated measurements. The published canine growth standards begin at about 12 weeks and use expected adult size and sex rather than one universal weight-by-age number.

Puppy weight chart by age

Choose the column using the puppy's likely adult weight, not today's weight. A 30 lb puppy expected to reach 70 lb belongs in the large column, while a 15 lb puppy expected to remain near 20 lb belongs in the small column.

Puppy weight by age: what to expect month by month

Puppies do not grow at the same speed, so the most useful age guide explains what to monitor rather than inventing one ideal weight for every dog.

8 weeks

Many puppies are moving to a new home around this age. Record a baseline weight, food amount, body condition, appetite, stool, and known parent sizes. Compare the puppy with the breeder's or rescue's previous records when available.

12 weeks or 3 months

This is the starting point for the evidence-based growth standards. Choose the chart by sex and expected adult size, then add repeated measurements instead of looking for one universal three-month weight.

4 to 5 months

Growth is still rapid. The Merck Veterinary Manual notes that the fastest growth commonly occurs during the first five months, making consistent portions and weekly monitoring especially useful.

6 months

The AKC comparison places small dogs around 75% of adult weight, medium dogs around 66%, large dogs around 60%, and extra-large dogs around 50%. A wide difference at this age is normal because expected adult size changes the whole growth timeline.

9 months

Small dogs may be near adult weight, while large and extra-large puppies still have substantial development ahead. Keep monitoring body condition because weight gain should not be forced to match a chart.

12 months

Many small dogs and some medium dogs have reached or nearly reached adult weight. Large and giant dogs may still be adding height, frame, weight, and muscle.

15 to 18 months

Most size groups are close to adult weight by 18 months in the comparison table, but breed-specific development and muscular maturity can continue.

18 to 24 months

Some very large dogs continue developing toward two years. The AKC growth guidance emphasizes that giant dogs mature later than smaller breeds.

How to calculate a puppy weight checkpoint

When you already have a reasonable adult-weight estimate, multiply it by the percentage in the matching age and size cell.

For an 80 lb large-breed adult estimate, the six-month checkpoint is 80 × 0.60 = 48 lb. At nine months it is 80 × 0.75 = 60 lb. Use the kg/lb helper above to do this arithmetic automatically.

Why there is not one puppy weight chart for every dog

Breed, sex, adult size, frame, neuter status, nutrition, health, and individual development all affect puppy growth. Two healthy puppies of the same age can therefore weigh very different amounts.

A useful chart groups dogs by expected adult weight and follows a trend across time. It does not label a puppy healthy or unhealthy from one number.

How evidence-based puppy growth charts work

The strongest published canine growth standards do more than compare one weight with one age. The 2017 WALTHAM growth-chart study analysed more than six million bodyweight records from young dogs. Its clinical curves cover 12 weeks to 2 years and separate puppies by sex and predicted adult-weight category.

The veterinary charts use five adult-weight groups up to 40 kg: under 6.5 kg, 6.5-9 kg, 9-15 kg, 15-30 kg, and 30-40 kg. Separate male and female charts produce ten curves. Dogs expected to exceed 40 kg need more individual interpretation because giant-breed growth varies more by breed.

1. Select the chart by sex and expected adult weight. Parent weights, breed standards, and your veterinarian can help establish the starting group.
2. Plot exact age in weeks and weight in kg. Official WALTHAM charts are designed around these measurements.
3. Add repeated measurements. The personal curve becomes more useful once several points show whether the puppy is staying in the same growth channel.
4. Review unexpected movement. A sustained change across growth channels deserves a diet, health, and veterinary review rather than an automatic portion increase or decrease.

Percentage chart vs clinical growth chart

How to track puppy weight consistently

Frequent, comparable measurements are more useful than occasional numbers taken under different conditions. The Merck Veterinary Manual recommends weekly weight monitoring during puppy growth.

• Use the same scale. For a small puppy, weigh the carrier first and subtract it from the combined weight.
• Choose a repeatable time. Meals, water, urination, and bowel movements can move the scale during the day.
• Record age in weeks. Months are convenient for the summary chart, but weeks are better for plotting a clinical curve.
• Write down context. Note food changes, treats, illness, stool, appetite, activity, and medications beside the measurement.
• Keep one primary unit. Convert kg and lb for reading, but log measurements in the same unit each time.

Weight is only one part of the picture. Use the body condition score guide for hands-on context, while remembering that puppy assessment should still be discussed with your veterinarian.

How to weigh a puppy at home

1. Small puppy: Place a stable pet scale on a level surface, zero it, and keep the puppy centered without pressing down.
2. Carrier method: Weigh the empty carrier, then the puppy inside it, and subtract the carrier weight.
3. Person-and-puppy method: Weigh yourself, then weigh yourself holding the puppy. If the combined reading is 184 lb and your weight is 160 lb, the puppy weighs about 24 lb.

Use the same method when possible. Household scales are less precise for tiny puppies, so ask a veterinary clinic for a more sensitive weigh-in when small changes matter.

How to choose the right size group

Choose the chart column by the puppy's expected adult weight—not by today's puppy weight. Use parent size, breed information, or a veterinary estimate. For an unknown mix, start with the best evidence and let the repeated trend refine it.

Mixed-breed puppies and unknown adult size

A puppy weight chart is less certain when the parents and breed mix are unknown. Start with the best evidence available: adult weights of the parents, a known breed component, current age and weight, and the pattern created by several weigh-ins. Paw size and frame can add context but are not reliable predictions on their own.

Do not move the puppy between columns after every weigh-in simply to make the result appear normal. Choose a starting estimate, record the result, and reassess only when the trend or better breed information supports the change. The Puppy Weight Predictor can estimate adult size from current age and weight, but its result remains a planning range.

Is my puppy underweight or overweight?

A puppy weight chart alone cannot diagnose underweight or overweight. Two puppies at the same weight can carry different amounts of fat and muscle.

WSAVA nutrition guidance treats body condition and muscle condition as separate assessments. At home, note how easily you can feel the ribs, whether a waist is visible from above, the abdominal shape from the side, muscle development, and changes across several weigh-ins.

Use the Dog Body Condition Score Guide alongside the scale and ask your veterinary team to interpret uncertain findings.

Should you feed more if a puppy is below the chart?

Do not automatically increase food because one measurement falls below an approximate checkpoint. The Merck Veterinary Manual warns that overfeeding increases growth rate and that faster growth is not desirable for skeletal development.

This is especially important for large and giant breeds. The goal is steady development with an appropriate body condition—not the highest possible weight. Investigate an unexpected trend before changing calories.

When do puppies stop growing?

Growth finish depends strongly on adult size. AKC guidance places small dogs around 6 to 8 months, medium dogs around 12 months, and giant breeds between about 12 and 18 months, with some very large dogs still developing near 24 months.

Merck gives a similar size-dependent pattern: small and medium dogs may finish growth and skeletal maturity around 8 to 12 months, while large and giant dogs can extend to roughly 10 to 16 months. Adult height, skeletal maturity, adult weight, and full muscular development do not always happen at the same time.

For more detail, see When Do Dogs Stop Growing?

How to use this puppy weight chart correctly

1. Estimate adult size. Start with breed context, parent size, or the Puppy Weight Predictor.
2. Select the correct size column. Do not use today's puppy weight to choose the adult-size group.
3. Compare the age checkpoint. Treat the percentage as rough growth-timing context.
4. Record the actual weight. Keep a dated log in one primary unit.
5. Repeat the measurement. The trend becomes more meaningful with each comparable weigh-in.
6. Check body condition. Use ribs, waist, abdominal shape, and muscle alongside weight.
7. Reassess unexpected changes. Do not change food merely to force the puppy toward a chart number.

Puppy height chart vs puppy weight chart

A universal puppy height chart is not dependable because breeds have very different proportions, growth rates, and official measurement points. Weight can be tracked consistently on a scale; height is easier to distort through posture, coat, floor surface, and measuring technique.

If height matters for a purebred puppy, use the adult height range in the official breed standard and ask the breeder or veterinarian about that breed's normal development. Do not treat adult height as a weekly health target. A puppy may slow in height before muscle and body mass finish developing. Use the separate How to Measure Dog Height guide when you need a consistent shoulder-height method.

When to use the chart, predictor, or breed page

These tools answer different questions. Keeping those jobs separate gives a more useful answer and prevents one broad dog weight table from pretending to fit every puppy.

Growth changes to discuss with a veterinarian

Contact a veterinarian promptly if a puppy loses weight during active growth, stops gaining unexpectedly, stops eating, has repeated vomiting or diarrhea, seems weak or unusually sleepy, develops a swollen abdomen, or changes sharply from its previous growth pattern. A scale cannot identify parasites, illness, dehydration, feeding problems, or developmental conditions.

Large and giant puppies need particular care with growth rate. More food does not automatically produce healthier development. Review diet formulation, measured portions, treats, movement comfort, and the full trend with your veterinary team.

Conclusion

A puppy weight chart by age is most useful when you choose the chart by expected adult size and follow the puppy's trend over time. Small dogs mature much earlier than giant dogs, so one age-to-weight table cannot fit every puppy.

Record regular weigh-ins, compare the appropriate growth pattern, check body condition, and use breed context before changing food or deciding that a puppy is growing too quickly or too slowly. When the trend changes unexpectedly, the chart can flag the change—but a veterinarian is needed to explain it.