How tall is a Mastiff?

An adult Mastiff stands about 30 inches at the shoulder (AKC mid-range, male). Females typically run 1–2 inches shorter, and individual variation within the breed is roughly ±2 inches.

Is a Mastiff considered a giant dog?

Yes — at 30" / 195 lb, the Mastiff falls into the giant-breed size class (shoulder height 28" and up). Out of 252 breeds catalogued, it ranks #8 tallest.

How does a Mastiff compare to a person?

At 30" tall, a Mastiff stands about 47% of the height of an average adult (5'4" / 64"). The chart on this page draws both silhouettes at the same pixel-per-inch scale so the proportion you see is the real ratio.

Mastiff Size Compared to a Person

A Mastiff stands 30″ at the shoulder and weighs about 195 lb — that puts it at 47% of the height of an average adult (5′4″ / 64″). Of the 252 breeds catalogued, it ranks #8 by shoulder height and falls into the giant-breed size class (Giant breeds, 28" and up).

Mastiff next to a person at scale — 30-inch shoulder height, 195 lb. Drawn by iDogNames. — Mastiff at 30″ / 195 lb, next to an average adult at 5′4″ / 135 lb. Drawn to AKC breed standards.

How a Mastiff compares

	Mastiff	Person	Difference
Shoulder height	30″	64″	-34″
Weight	195 lb	135 lb	+60 lb

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About the Mastiff

The Mastiff, also known as the English Mastiff, is one of the largest and most ancient dog breeds, with a history that stretches back thousands of years to ancient civilizations. These massive dogs can weigh over 200 pounds, making them one of the heaviest breeds in the world. Despite their imposing size, Mastiffs are known as gentle giants — dignified, calm, and fiercely devoted to their families. Their broad head, powerful build, and soulful expression command respect and admiration wherever they go.

Similar-size breeds

The 8 breeds in the Giant size class with shoulder height closest to the Mastiff.

Great Pyrenees — 30″ / 100 lb (same height)
Komondor — 30″ / 100 lb (same height)
Leonberger — 30″ / 140 lb (same height)
Anatolian Shepherd — 29″ / 130 lb (−1″ vs Mastiff)
Black Russian Terrier — 29″ / 105 lb (−1″ vs Mastiff)
Great Dane — 31″ / 158 lb (+1″ vs Mastiff)
Greyhound — 29″ / 68 lb (−1″ vs Mastiff)
Kuvasz — 29″ / 108 lb (−1″ vs Mastiff)

Compare a Mastiff with another breed

Frequently asked

How tall is a Mastiff?: An adult Mastiff stands about 30 inches at the shoulder (AKC mid-range, male). Females typically run 1–2 inches shorter, and individual variation within the breed is roughly ±2 inches.
Is a Mastiff considered a giant dog?: Yes — at 30" / 195 lb, the Mastiff falls into the giant-breed size class (shoulder height 28" and up). Out of 252 breeds catalogued, it ranks #8 tallest.
How does a Mastiff compare to a person?: At 30" tall, a Mastiff stands about 47% of the height of an average adult (5'4" / 64"). The chart on this page draws both silhouettes at the same pixel-per-inch scale so the proportion you see is the real ratio.

More on the Mastiff

Mastiff dog names & full breed page · All giant-size breeds · Visual atlas (Giant section) · Size comparison home