Giant Schnauzer weight chart
A fully grown Giant Schnauzer typically weighs somewhere between around 25kg for a smaller female and up to roughly 48kg for a larger male, standing about 60 to 70cm at the shoulder for males and a little less for females. Despite the name, it is a breed that takes its time — most Giant Schnauzers keep filling out well past their first birthday, with some not looking fully mature until closer to two or three years old.
Reading a Giant Schnauzer's growth curve
The 'Giant' in the name refers to size relative to the Standard and Miniature Schnauzer, and it is a genuinely large, powerfully built dog rather than a moderately sized one scaled up slightly. Most of the height is reached in the first twelve to fifteen months, but the muscle and chest depth that give an adult Giant Schnauzer its solid look tend to keep developing for a good while after that.
This means a chart based purely on age and weight can be misleading for the breed — a Giant Schnauzer at eighteen months might already be at or close to its adult height but still visibly leaner and less filled-out than it will be at three years old, which is entirely normal rather than a sign of anything being wrong.
What affects where a Giant Schnauzer sits in that range
Sex makes a real difference here, with males typically sitting well above females in both height and weight, and working or protection-line dogs sometimes carrying a heavier, more muscular build than dogs bred more for the show ring at a similar height.
As with any large or giant breed, body condition — being able to feel the ribs under the coat without them being visible, and seeing a waist from above — is a better day-to-day guide than chasing a specific number, since the healthy weight range for this breed is genuinely wide.
When a Giant Schnauzer's weight is worth a second look
A young Giant Schnauzer gaining weight very quickly, or one that looks noticeably heavier than its exercise and diet would suggest, is worth watching — rapid weight gain during the growth phase of a large breed is one of the things vets keep an eye on because of the extra load it puts through developing joints.
Equally, a dog that seems to be losing condition, looking ribby or less muscled than usual with no change in food or exercise, is worth mentioning at a vet visit rather than assuming it is simply part of a lanky growth phase.
Common questions
- How big does a Giant Schnauzer get?
- Adult Giant Schnauzers typically weigh somewhere between around 25kg and 48kg depending on sex and build, standing roughly 60 to 70cm at the shoulder for males and a little less for females. It is a genuinely large, powerfully built breed rather than a moderately sized dog.
- When does a Giant Schnauzer stop growing?
- Most reach close to their adult height by twelve to fifteen months, but the muscle and chest depth that give the breed its solid, mature look can keep developing until two or three years old, which is typical for a breed this size.
- Is it normal for a Giant Schnauzer puppy to look lanky?
- Yes. Many Giant Schnauzers reach much of their height before their muscle and body have caught up, so a lanky or unfilled look through adolescence is common and not a sign of a problem on its own.
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Written against guidance published by UK veterinary and welfare organisations. Always confirm specifics with your own vet.
Written by Matt Garnett, who runs Giddy Pets and is a lifelong pet owner — not a vet. This is general information, not veterinary advice, and it cannot replace an examination by the vet who knows your animal. How we write these guides.