To estimate a mixed-breed puppy's adult weight, put it in a size band (small, medium, large or giant) using known parent breeds or a DNA breed percentage, then track its weight against that band's growth curve. Expect a wider range than for purebreds.
If you searched for a puppy weight calculator mixed breed PDF (a chart you can print), this page has it. For a quick personalized estimate, use our mixed breed puppy growth chart calculator.
Mixed-breed puppy weight chart (printable, by expected adult size)
This chart uses the American Kennel Club's growth percentages: about 75% of adult weight at 6 months for small dogs, 66% for medium, 60% for large and 50% for giant. At 12 months, small dogs are about done (100%), medium about 95% and large about 85%. Giant dogs can keep growing until 18–24 months.
Find your puppy's likely adult weight in the first column, then read across.
| Expected adult weight | Size band | At 6 months | At 12 months |
|---|---|---|---|
| 10 lb (4.5 kg) | Small | 7.5 lb (3.4 kg) | 10 lb (4.5 kg) |
| 20 lb (9 kg) | Small | 15 lb (6.8 kg) | 20 lb (9 kg) |
| 30 lb (13.6 kg) | Medium | 20 lb (9.0 kg) | 28.5 lb (12.9 kg) |
| 40 lb (18 kg) | Medium | 26 lb (12 kg) | 38 lb (17.2 kg) |
| 50 lb (22.7 kg) | Medium | 33 lb (15 kg) | 47.5 lb (21.5 kg) |
| 60 lb (27 kg) | Large | 36 lb (16.3 kg) | 51 lb (23.1 kg) |
| 80 lb (36 kg) | Large | 48 lb (21.8 kg) | 68 lb (30.8 kg) |
| 100 lb (45 kg) | Large | 60 lb (27 kg) | 85 lb (38.6 kg) |
To print it, use your browser's print option (Ctrl+P or Cmd+P) and choose "Save as PDF" or send it to your printer. Tape a copy near your puppy's weigh-in spot.
How to estimate a mixed breed's adult size (parents, paws, breed %)
Here are the methods, from best to worst:
- Know the parents. If you've seen the mother (and ideally the father), their adult weights are your best clue. A puppy usually lands somewhere in that range.
- Use a DNA breed test. A breed percentage (say, 50% Lab, 25% Poodle, 25% Shepherd) tells you which size bands are involved. Some tests also report a predicted adult weight range. Our breed percentage calculator can help you make sense of the mix.
- Track the growth curve. Weigh weekly and compare against the chart. By 4–6 months, the trend is usually clear.
- Feel for growth plates. AKC notes that if you can still feel developing growth plates at the ribs, the dog will probably keep growing in height.
- Ask your vet. They see lots of puppies and can spot size clues in the frame and bones.
What about paw size? It's a fun theory, but it doesn't hold up. Big paws on a puppy mostly say "young puppy." Don't buy a giant bed based on paws alone.
For how the math behind estimators works, see our explainer on the AKC puppy weight calculator.
Male vs female mixed-breed growth differences
Males are usually larger than females of the same breed mix, and they tend to keep filling out a bit longer. The gap is bigger in large breeds and smaller in toy breeds.
So are female mixed breeds smaller than males? On average, yes, but there's a lot of overlap. A big female from big parents can outweigh a small male. If your puppy's parents are known, look at the mother's size for a female puppy and the father's for a male, but expect a spread.
If you want sex-specific numbers, our puppy weight calculator lets you enter your puppy's sex and breed.
Worked example: a 12-week Lab mix
Meet Biscuit, a female Lab mix. Her mom was a Labrador, but her dad is a mystery. Biscuit weighs 20 lb (9 kg) at 12 weeks.
Step 1: Compare to the Lab curve. One published Labrador chart shows females at about 20–25 lb (9–11 kg) at 3 months. Biscuit is at the low end, which hints that she may finish at the smaller end of the Lab range (AKC Lab females: about 55–70 lb).
Step 2: Pick a band. With a Lab mom and a mystery dad, Biscuit is probably medium-to-large. That's a wide band, so plan for a range.
Step 3: Re-check at 6 months. Say Biscuit weighs 36 lb (16.3 kg).
- As a large dog (60% at 6 months): 36 ÷ 0.60 = 60 lb.
- As a medium dog (66% at 6 months): 36 ÷ 0.66 = about 55 lb.
Step 4: Take the range. Biscuit will probably land around 55–60 lb (25–27 kg). Recheck at 9 and 12 months and the estimate will tighten.
Try your own puppy's numbers in the mixed-breed puppy calculator. If your dog has some Lab in the mix, you might also like our Labrador puppy weight chart.
Why mixed-breed estimates have wider ranges
With a purebred, a breed standard gives a target range that's been worked out over many generations. A mixed breed can inherit a gene combination from any part of its family tree, so:
- Parent breeds may differ a lot in size.
- Traits don't blend evenly. A puppy can take after the smaller or the larger parent.
- DNA tests estimate breeds, not weight, so they're a guide.
- Litters vary. Two puppies from the same litter can end up 10–20 lb apart.
So use a range, not a single number. Use the puppy weight chart by breed size to see where your puppy sits.
Use the free mixed-breed puppy calculator
Our mixed breed puppy growth chart tool takes your puppy's age, weight, sex and any parent info you have, and gives an adult-weight range. It's free, and you can re-run it every month as your puppy grows.
When to call your vet
A weight estimate is fun. Health comes first. Call your vet if:
- Your puppy hasn't gained weight for two weeks, or is losing weight.
- Belly looks pot-bellied while the body looks thin. Worms are common in puppies.
- Vomiting or diarrhea for more than a day, or blood in either.
- Limping, swollen joints or a bunny-hop run, especially in medium and large mixes.
- Lethargy, pale gums or weakness.
- Refusing food for more than 24 hours (12 hours for very small puppies).
Frequently asked questions
PawCalculator Editorial
We combine veterinary references, published guidelines, and calculator-grade modeling. This article is for education, not a substitute for an exam.
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