Free tool
Enter your puppy's age, weight, and breed to see how big they'll get, whether they're on track, and what to expect at every growth stage. A free puppy weight chart and size calculator in one.
Puppies don't grow at a constant rate, and the rate itself depends heavily on breed. Small breeds reach adult size by 8–10 months. Medium breeds by around 12 months. Large breeds by 15–18 months. Giant breeds can keep growing until 24 months.
Pick your breed above for a comparison against that breed's typical adult weight. If your breed isn't listed, or your puppy is mixed, choose "mixed breed / not sure" and select the closest expected adult size instead.
Read: How big will my puppy get? 7 reliable methods →Click any breed for the fuller picture, sources, and a link to its full chart.
25–36 kg adult · stops growing ~12–15 months
23–41 kg adult · stops growing ~15–18 months
25–34 kg adult · stops growing ~12–15 months
12–25 kg adult · stops growing ~12 months
8–13 kg adult · stops growing ~9–11 months
8–14 kg adult · stops growing ~10–12 months
35–59 kg adult · stops growing ~18–24 months
25–41 kg adult · stops growing ~15–18 months
16–27 kg adult · stops growing ~12–15 months
14–27 kg adult · stops growing ~12–14 months
1–2.7 kg adult · stops growing ~8–9 months
18–32 kg adult · stops growing ~12 months
Click any card for the fuller explanation and sources.
4 small meals a day on a puppy formula matched to expected adult size. Free-feeding at this age makes under- or over-feeding hard to spot — measured portions from day one make every stage after this easier to manage.
Learn more + sources →3 meals a day through the fastest growth window. Recheck the portion size every 2 weeks against the milestone table above, rather than guessing — your puppy's calorie needs change faster here than at any other stage.
Learn more + sources →2 meals a day. Large and giant breeds should move to a large-breed formula — the lower calcium-to-phosphorus ratio slows bone growth and reduces the risk of joint problems developing later.
Learn more + sources →Transition to adult food once your vet confirms growth has plateaued. Small breeds usually transition first, around 9–10 months; giant breeds last, sometimes as late as 18–24 months.
Learn more + sources →Keep treats under 10% of daily calories. It's an easy number to blow past during training, when treats can quietly outweigh the actual meal.
Learn more + sources →Whenever you change formula or brand — not just at the big life-stage transitions — mix old and new food gradually over 7 to 10 days instead of swapping overnight.
Learn more + sources →Always follow the feeding chart on your specific food's packaging — brands vary in calorie density. Talk to your vet before changing formulas.
A rough guide across every breed: 5 minutes of structured exercise per month of age, twice a day, until growth plates close. The right ceiling depends heavily on size.
Click any card for the fuller explanation and sources.
Growth plates close earliest, around 6–10 months, so restrictions ease sooner. Still avoid repetitive jumping off furniture in puppies under 6 months — small joints take real impact from a height that looks harmless.
Learn more + sources →Growth plates typically close around 11–12 months. Keep runs and recall games structured rather than free-for-all until then, and ease into longer distances gradually instead of jumping straight to adult-length walks.
Learn more + sources →Growth plates can stay open past 14–18 months. Avoid forced runs, stairs, and jumping on hard surfaces until then — early joint stress is one of the most preventable causes of later hip and elbow problems. Swimming is a good low-impact alternative.
Learn more + sources →If your puppy is sore, slow, or stiff the day after a walk, the last session was too long — scale back rather than pushing through it.
Learn more + sources →Puppies need roughly 18–20 hours of sleep a day. Overtiring a puppy with too much play or exercise is as real a problem as not exercising them enough.
Learn more + sources →The window for easy, low-fear socialization runs roughly 3 to 14 weeks — overlapping with the exact stage owners are most cautious about getting out and about.
Learn more + sources →Click any card for the fuller explanation and sources.
Can indicate parasites, poor-quality food, or an underlying illness — worth a vet check if it persists past 2 weeks.
Learn more + sources →Usually overfeeding or a calorie-dense diet. Rapid growth in large breeds in particular raises joint-injury risk later on.
Learn more + sources →Ribs should be easily felt but not seen. If they're visible at rest, increase food gradually rather than all at once.
Learn more + sources →If you can't feel ribs without pressing, or there's no visible waist from above, that's weight rather than naturally large breed size — cut back gradually and recheck against the badge above.
Learn more + sources →Most often means your puppy has simply reached adult size — confirm against the breed's typical maturity age above.
Learn more + sources →Can be ordinary growing pains in large breeds, but shifting or severe lameness deserves a same-week vet visit, not a wait-and-see.
Learn more + sources →These are general patterns, not a diagnosis. If anything feels off, your vet is the right call — not a calculator.
Small breeds reach adult size around 8–10 months, medium breeds around 12 months, large breeds 15–18 months, and giant breeds can keep growing until 24 months.
They're a useful guide based on population averages, not a guarantee — individual puppies vary, especially mixed breeds.
Genetics, parasites, or diet can all play a role. If your puppy is consistently below the curve, mention it at the next vet visit.
Yes — mixed breeds often follow a growth pattern closer to whichever parent breed is dominant in size, which is why this tool falls back to size class when breed is unknown.
Not necessarily. Growth isn't perfectly linear — short plateaus are normal as long as the overall trend keeps climbing.
Early neutering can slightly delay growth-plate closure, which is why many vets recommend waiting until a puppy is closer to full size, especially for large breeds.
It depends entirely on breed and expected adult size — a toy breed might be under 1kg, a giant breed puppy can already be 5–8kg.
It's a rough folk method at best. Age, current weight, and breed give a far more reliable estimate.
It may simply mean they reached adult size early for their breed — compare against the maturity age range for that breed, not just the calendar.
Yes — many owners notice a visibly bigger puppy after a single growth-spurt week, particularly between 12–20 weeks.
Weekly is enough to catch real trends without overreacting to normal day-to-day fluctuation.
Males often end up slightly heavier as adults within the same breed, but the week-by-week growth pattern is broadly similar.
Check the breed is set correctly first — a mixed breed weighted toward a larger parent can outpace the average for the breed you selected.
Yes, small discrepancies are normal. Use the same scale each time so your own trend line stays consistent.
Generally once growth has plateaued for your breed size — small breeds around 9–10 months, giant breeds as late as 18–24 months.
It can modestly extend the growth window rather than stunt it, since growth plates close slightly later — talk to your vet about timing for larger breeds.
It varies hugely by breed size — a toy breed might gain under 50g a week, a giant breed puppy can gain over 1kg. The milestones table above is breed-specific.
Yes — many vets recommend large/giant breed formulas specifically designed to moderate growth speed and protect developing joints.
Yes, both can cause temporary plateaus or dips. A short dip usually self-corrects; a persistent one is worth a vet visit.
You should be able to feel ribs easily without pressing hard, and see a visible waist from above. If not, that points to weight, not breed size.
Not fundamentally — they follow the same size-class curve shape, though working breeds often carry more lean muscle at the same weight.
Choose “mixed breed / not sure” and select the closest expected adult size — we're expanding the breed list over time.
Bigger skeletons need more time for growth plates to close safely — rushing it is linked to higher rates of joint problems later in life.
A single week is rarely meaningful. Several weeks with no movement, especially alongside low energy or appetite, is when it's worth a check-up.
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