How big does a Newfoundland get?

A full-grown Newfoundland typically stands 66–71 cm (26.0–28.0 inches) tall at the shoulder and weighs 45–70 kg (99.2–154.3 lbs). Newfoundland is considered a giant breed and may take up to 18–24 months to reach full size.

What is the lifespan of a Newfoundland?

The average lifespan of a Newfoundland is 9–10 years. Giant breeds typically have shorter lifespans than smaller breeds. Maintaining a healthy weight is one of the most important factors in extending your dog's lifespan — overweight dogs can lose 1–2 years of life expectancy.

What are the personality traits of a Newfoundland?

Newfoundland are known for being sweet, patient, devoted, gentle. They are generally good with children and make excellent family dogs. They are moderately trainable with consistent positive reinforcement. They need plenty of space and exercise, making them better suited for homes with yards.

Is a Newfoundland a good choice for apartments and families?

A Newfoundland is a giant breed that typically needs more space and exercise, so they may not be ideal for small apartments. They are generally good with kids and make great family companions. Be prepared for significant shedding — regular brushing 2–3 times per week is recommended.

What are common health issues for giant breed dogs like the Newfoundland?

Giant breeds like the Newfoundland face increased risks of bloat (GDV), hip/elbow dysplasia, heart conditions, and bone cancer. Their large size puts extra stress on joints, making weight management critical. Keeping your dog at an ideal weight is the single most effective way to reduce the risk of many of these conditions. Use our BCS assessment tool above to check your dog's condition.

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Newfoundland Weight & Calorie Guide

Q: How many calories does a Newfoundland need per day?

A typical adult Newfoundland weighing about 58 kg needs approximately 2339–2923 kcal per day, depending on activity level and neuter status. Puppies and very active dogs need more, while seniors and neutered dogs need less. Use our breed-specific calculator for an exact number.

Giant Breed

Quick Answer

A healthy adult Newfoundland weighs 45–70 kg (99.2–154.3 lbs), according to the AKC breed standard. Puppies reach 50% of adult weight by 8–12 months and full weight by 18–24 months.

Source: AKC breed standard, WSAVA nutrition guidelines

Quick Facts

Ideal Weight

45–70 kg

(99.2–154.3 lbs)

Size Category

giant

Breed Type

Daily Calories

~2339–2923 kcal

Adult, neutered

Free Tools

BCS Assessment Calorie Calculator

Ideal Weight Range

45 kgto70 kg

99.2 lbsto154.3 lbs

UnderweightIdealOverweightObese

Data:AKC breed standard·WSAVA guidelines

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Puppy Weight Predictor

For puppies under 12 months. Enter your puppy's current weight and age to predict adult weight.

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How the puppy weight predictor works

This predictor uses growth milestone data from Salt et al. (2017), published in Veterinary Record, which tracked the weight development of dogs across five size categories from birth to adulthood. By comparing your puppy's current weight against the expected growth percentage for their age and size category, we estimate their adult weight range.

Factors that affect adult weight

Genetics play the largest role, but nutrition, neutering status, and overall health also influence growth rate. Puppies fed excessive calories during rapid growth phases may exceed their genetic weight potential, while underfed puppies may not reach it. Large and giant breeds grow more slowly than toy and small breeds, reaching full size at 18–24 months rather than 10–12 months.

Data source: Salt et al. (2017) "Growth patterns of commercial kennel dogs" Veterinary Record • AKC breed standards

Newfoundland Health & Weight Management

Newfoundlands are gentle giants with a short lifespan of 9–10 years. Every year matters, and obesity can shorten it further. Their massive frame puts enormous stress on hips and elbows — extra weight accelerates degenerative joint disease. The breed is also prone to sub-aortic stenosis (SAS), a heart condition where excess weight increases cardiac workload dangerously.

Exercise: 30–45 minutes of moderate daily exercise — steady walks and swimming (Newfoundlands are natural water rescue dogs and love the water). Avoid high-impact exercise during growth (under 2 years). In hot weather, exercise only during cool hours and provide constant water access.

Feeding tips: Feed a large-breed formula with controlled calories during puppyhood. Adults need 4–6 cups of quality kibble daily, split into 2 meals. Never free-feed. Newfoundlands are gentle but persistent beggars — measure every portion. Joint supplements (glucosamine, chondroitin) are commonly recommended.

Keeping your Newfoundland at an ideal 99–154 lbs (45–70 kg) protects joints and heart. Use PawScale's calorie calculator for Newfoundlands to manage portions, check body condition with our BCS tool, and follow the feeding guide for giant-breed meal planning.

Data source: AKC breed standard • Last updated: 2026-08-12

Is your Newfoundland at a healthy weight?

59% of dogs are overweight — can you tell? Take our free 2-minute Body Condition Score assessment.

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Newfoundland Calorie Calculator

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Frequently Asked Questions

How much should a Newfoundland weigh?

The ideal weight for a Newfoundland is 45–70 kg (99.2–154.3 lbs). Giant breeds have slower metabolisms, so weight management is especially important. Use our calorie calculator above to get personalized feeding recommendations.

How many calories does a Newfoundland need per day?

A typical adult Newfoundland weighing 58 kg needs approximately 2339–2923 kcal per day, depending on activity level and whether they are neutered. Use our breed-specific calculator above for an exact number based on your dog's details.

Is my Newfoundland overweight?

59% of dogs are overweight, and most owners cannot tell just by looking. Check your Newfoundland's Body Condition Score (BCS) — if you can't easily feel their ribs or they have no visible waist from above, they may be overweight. Take our free 2-minute BCS assessment above to find out.

When does a Newfoundland reach full adult weight?

Newfoundland puppies reach 50% of their adult weight by 8–12 months and typically reach full adult weight by 18–24 months, according to AKC growth guidelines. Small breeds mature faster than large breeds.

What size crate does a Newfoundland need?

A Newfoundland typically needs a 48-inch crate based on breed size. Use PawScale's free crate size calculator for a personalized recommendation.

References & data sources

1. AKC Official Breed Standard — Newfoundland. akc.org

2. Salt C, et al. “Estimating the expected growth of dogs.” Vet Record, 2017;180(15):376.

3. National Research Council. Nutrient Requirements of Dogs and Cats. National Academies Press, 2006.

4. Laflamme DP. “Development and validation of a body condition score system for dogs.” Canine Practice, 1997;22(4):10–15.

5. WSAVA Global Nutrition Guidelines; Association for Pet Obesity Prevention (APOP) 9-point BCS scale.

Last reviewed: September 2026

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