Giant Schnauzer Puppy Weight Calculator

Calculate the adult weight for your Giant Schnauzer. Just type your puppy’s current weight and age, and see how big your puppy gets.

Giant Schnauzer Growth Guide

Breed Overview

The Giant Schnauzer, the largest of the three Schnauzer varieties, originated in 17th-century Germany, where it was developed to drive cattle, guard farms, and work in breweries. Known for their intelligence, loyalty, and commanding presence, Giant Schnauzers are strong-willed, highly trainable, and protective of their family. Their wiry double coat and distinctive beard give them a noble appearance that matches their confident personality.

This breed falls into the giant size category, with adult males typically weighing 65–90 lbs and females 55–75 lbs. Because of their size and working background, Giant Schnauzers grow quickly and require carefully managed nutrition and exercise to support proper bone development and avoid orthopedic issues. Tracking growth is critical to ensure your puppy is developing at a healthy pace.

Giant Schnauzer Growth Chart & Weight Ranges

Age	Average Weight (Male)	Average Weight (Female)
4 weeks	5–7 lbs	4–6 lbs
8 weeks	16–20 lbs	14–18 lbs
3 months	25–32 lbs	22–28 lbs
4 months	35–45 lbs	30–40 lbs
6 months	50–65 lbs	45–55 lbs
9 months	65–75 lbs	55–65 lbs
12 months	70–90 lbs	60–75 lbs
18 months	75–95 lbs	65–80 lbs

Note: Males typically weigh 5–10 lbs more than females and may have broader frames and heavier muscle mass.

How Much Bigger Will My Giant Schnauzer Puppy Get?

Most Giant Schnauzer puppies will reach around 50% of their adult weight by 4–5 months and about 80–90% by 9–12 months. However, because they are a giant breed, full maturity—including musculoskeletal development—can take up to 24 months.

Rule of thumb: Double your puppy’s weight at 16 weeks to estimate their adult size. For example, a 40 lb male pup at 4 months might reach 80 lbs as an adult.

Exception: Some males, particularly from working lines, may continue to fill out well into their second year.

Giant Schnauzer Growth Tips

Nutrition

Feed your Giant Schnauzer a large-breed puppy formula that supports slow, steady growth. These formulas contain controlled calcium and phosphorus levels to help prevent growth disorders. Feed 3–4 meals per day until about 6 months, then transition to 2 meals daily. Avoid overfeeding or supplementing with calcium.

Exercise

While these dogs are highly energetic and benefit from daily physical activity, avoid strenuous or high-impact exercise during growth phases. Activities like long-distance running or jumping on hard surfaces should be delayed until growth plates close (typically around 18–24 months). Stick with walks, gentle play, and mental stimulation like training or puzzle toys.

Health Watch

As a giant breed, Giant Schnauzers are prone to growth-related issues such as

• Hip and elbow dysplasia
• Panosteitis (growing pains)
• Bloat (gastric torsion)—avoid vigorous activity right before or after meals
• Osteochondritis dissecans (OCD)—a joint condition in rapidly growing puppies