Puppy Growth Chart & Weight Calculator (2026) — From 8 Weeks to Adult

Bringing home a puppy is pure joy and a little confusing. Are they growing “normally”? How much should they weigh at 8, 12, or 16 weeks? This 2026 guide gives you growth timelines, average weight ranges by breed size, and a simple weight calculator to estimate adult size. Remember: every puppy is an individual—use these as averages, not strict targets. If you’re ever unsure, speak with your vet.

A tiny puppy with curious eyes lounges on a colorful woven rug, exuding cuteness and charm.

Quick Links

• Puppy Growth Stages (0–24 Months)

• Average Weight by Breed Size (Charts)

• Puppy Weight Calculator

• Underweight vs. Overweight Signs

• Feeding Frequency & Portions

• FAQs

Puppy Growth Stages (0–24 Months)

• 0–8 weeks: Rapid growth with litter. Socialization begins. Vet checks, deworming.

• 2–6 months: Fastest growth. Baby teeth, vaccine visits, house/crate training.

• 6–12 months: “Teen phase.” Small/medium dogs reach adult height; large/giant still lean.

• 12–24 months: Filling out. Large/giant breeds mature later; joints and muscle finish developing.

Tip: Growth spurts are normal. What matters most is steady gain, bright eyes, good energy, and a healthy body condition.

Average Puppy Weight by Breed Size (Charts)

How to use: Find your pup’s size group (toy, small, medium, large, giant). Compare their weight at the nearest week/month. Being above or below a bit is common—focus on trend, appetite, stool quality, and energy.

Adult-size cheat sheet (typical ranges):Toy: 2–5 kg (4–11 lb) · Small: 5–10 kg (11–22 lb) · Medium: 10–25 kg (22–55 lb)Large: 25–45 kg (55–99 lb) · Giant: 45–80 kg (99–176 lb)

Toy Breeds (Chihuahua, Pomeranian, Toy Poodle)

Age	Typical Weight
8 weeks	0.7–1.4 kg (1.5–3 lb)
12 weeks	0.9–2.0 kg (2–4.5 lb)
16 weeks	1.1–2.7 kg (2.5–6 lb)
6 months	1.4–3.6 kg (3–8 lb)
9 months	1.8–4.3 kg (4–9.5 lb)
12 months (adult)	2–5 kg (4–11 lb)

Small Breeds (Beagle, Dachshund, Cavalier)

Age	Typical Weight
8 weeks	1.4–3.0 kg (3–6.5 lb)
12 weeks	1.8–4.0 kg (4–9 lb)
16 weeks	2.3–5.2 kg (5–11.5 lb)
6 months	3.2–6.8 kg (7–15 lb)
9 months	4.0–8.6 kg (9–19 lb)
12 months (adult)	5–10 kg (11–22 lb)

Medium Breeds (Cocker Spaniel, Border Collie, Staffy)

Age	Typical Weight
8 weeks	2.7–5.4 kg (6–12 lb)
12 weeks	4.0–7.3 kg (9–16 lb)
16 weeks	5.9–10.4 kg (13–23 lb)
6 months	8.6–15.9 kg (19–35 lb)
9 months	10.9–20.4 kg (24–45 lb)
12 months (adult)	10–25 kg (22–55 lb)

Large Breeds (Labrador, Golden, German Shepherd)

Age	Typical Weight
8 weeks	4.5–7.7 kg (10–17 lb)
12 weeks	7.3–11.3 kg (16–25 lb)
16 weeks	10.0–16.3 kg (22–36 lb)
6 months	18.0–27.2 kg (40–60 lb)
9 months	22.7–34.0 kg (50–75 lb)
12–18 months (adult)	25–45 kg (55–99 lb)

Giant Breeds (Great Dane, Newfoundland, Mastiff)

Age	Typical Weight
8 weeks	6.8–10.4 kg (15–23 lb)
12 weeks	10.9–16.3 kg (24–36 lb)
16 weeks	15.9–24.0 kg (35–53 lb)
6 months	27.2–36.3 kg (60–80 lb)
9 months	36.3–50.0 kg (80–110 lb)
18–24 months (adult)	45–80 kg (99–176 lb)

These are averages. Genetics, litter size, parasites, illness, and nutrition all influence growth.

A fluffy puppy wearing a Santa hat lies cozily on a bed, in front of a softly glowing Christmas tree, embodying the festive spirit.

Puppy Weight Calculator

What it does: estimates adult weight using age × size-group multipliers (common veterinary heuristics). It’s a guide—not a diagnosis.

Underweight vs. Overweight: Signs & Fixes

Underweight signs

• Sharp ribs/hips visible, little fat cover

• Dull coat, low stamina, loose stools

Fixes:

• Deworm (per vet schedule), check for parasites/illness

• Increase calories via balanced puppy food; add 10–15% portions gradually

• Split meals into 3–4 feedings; track weekly weight

Overweight signs

• No abdominal tuck, hard to feel ribs, snoring, heat intolerance

• Reluctance to exercise; quick fatigue

Fixes:

• Measure food (no “cup guessing”); cap treats at ≤10% of daily calories

• Add short, frequent play sessions; puzzle feeders for mental work

• Ask vet about ideal Body Condition Score (BCS 4–5/9)

Feeding Frequency & Portions (By Age)

• 8–12 weeks: 4 small meals/day

• 3–6 months: 3 meals/day

• 6–12 months: 2 meals/day

• Switch to adult food: small breeds ~10–12 mo; medium ~12–14 mo; large/giant ~14–24 mo.

• Choose an AAFCO-compliant puppy food appropriate for size (esp. large-breed formulas with controlled calcium/phosphorus).

A small puppy stands patiently in a bathtub, its leash held gently by a hand as it receives a bath.

Helpful: Dog Age Calculator · Best Puppy Names · Human Foods Dogs Can & Can’t Eat

FAQs

When do puppies stop growing?

Small dogs often finish height growth by 9–12 months; large/giant breeds can continue filling out until 18–24 months.

How much should a 12-week Lab weigh?

Many healthy 12-week Labradors fall around 7–11 kg (16–25 lb), but lines vary—use trend and body condition.

Is my puppy too thin if I can see ribs?

A slight rib outline can be normal during spurts. Prominent ribs/hips with low energy warrants a vet chat.

When should I worry about rapid weight gain?

If weight jumps without a food change or you can’t feel ribs, reduce treats, measure meals, and ask your vet to assess BCS.