In-depth guide · Safety & cost
Dog ate chocolate, grapes or xylitol? What to do right now
Your dog ate chocolate, grapes, raisins, xylitol, onion or a pill: who to call now, what to have ready, and how vets judge the risk from published thresholds.
Growth · food · due dates · age
Puppy and pet calculators that get the math right.
How big your puppy will get, how much to feed, when she’s due and how old he really is — worked out from real veterinary data, with honest ranges. Every number is sourced and dated. Nothing you type leaves your browser.
- Growth bands from the published data of a study of more than 6 million young U.S. dogs, openly licensed
- A range with every answer, and the reason for its width
- “Call your vet” where it matters, before any number
Puppy weight calculator
ExampleYour estimate · adult weight
about61lb
A 16-week-old male Labrador Retriever weighing 25 lb: half of puppies like him end between 55 and 69 lb; 8 in 10 between 51 and 79 lb.
Growth bands derived by Puppy Scale from Salt C et al. (2017), PLOS ONE 12(9):e0182064, data: University of Liverpool DataCat 377, licensed CC BY 4.0. Our tables are empirical summaries, not the published model curves. Changes: see the method.
Breed weights: Andersson L et al. (2023) Scientific Reports 13:443 (CC BY 4.0); Bannasch D et al. (2021) Canine Medicine and Genetics 8:12 (CC BY 4.0). Kennel-club breed standards: see the club’s own breed page.
Rules of thumb, tested
Double the weight at 16 weeks
Works for small dogs. For bigger ones it runs low — and the larger the dog, the further off. Each row is thousands of real puppies whose adult weight is known.
“Double it at 6 months”
+29% to +49%too high, for every size
“Dog years × 7”
A mythdogs age fast early, then slower (AVMA)
- median error
- middle half of dogs
- 8 in 10 dogs
Growth bands derived by Puppy Scale from Salt C et al. (2017), PLOS ONE 12(9):e0182064, data: University of Liverpool DataCat 377, licensed CC BY 4.0. Our tables are empirical summaries, not the published model curves. Changes: see the method.
Start here
Guides that show their working
In-depth guide · Pregnancy & heat
Dog pregnancy timeline: due date, week by week and red flags
When a pregnant dog is due, counted from breeding, ovulation or the LH surge, what happens each week, how to check her temperature and when to call your vet.
In-depth guide · Growth
How big will my puppy get? What real growth data shows
How to estimate your puppy’s adult weight from its weight, age and size class, with honest ranges, a worked example and why calculators disagree.
How we check our numbers
Three rules we never bend
The exact formula, every time
Calories use 70 × kg0.75, never the straight-line shortcut that is 43% off for a 1-kg dog. Cats get cat factors.
Open data, credited on the page
Growth bands come from the openly licensed data behind the best-known puppy charts. You can see our tables and how we made them.
Dated, and honest about the edges
Every result says when its sources were checked; the poison-line numbers are re-checked at least every 35 days. Where no source exists, the page says “Not modeled” instead of guessing.