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How Big Is a Parasaurolophus?

A parasaurolophus is about 31 ft (9.5 m) long. That is about 5.6 times as long as the average man is tall. A duck-billed dinosaur with a long tube-shaped crest.

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How big is a parasaurolophus compared to the average man?

A parasaurolophus is about 5.6 times as long as the average man is tall. A parasaurolophus is 5.6× the size of the average man: about 5.6 average men lined up would match it. By volume, about 40 average men would fit inside a parasaurolophus.

Parasaurolophus length in feet, inches, centimeters and meters

A parasaurolophus measures:

Unit	Value
Feet and inches	31 ft 2 in
Inches	374 in
Centimeters	950 cm
Meters	9.5 m

Parasaurolophus size facts

Parasaurolophus was about 9.5 meters long.
Its hollow crest may have worked like a trumpet.

How does a parasaurolophus compare to other things?

A parasaurolophus next to 24 things of similar size, plus some everyday references:

Thing	Size	Compared to Parasaurolophus
Sun	865,000 miles (1,393,000 km) across	147 million× bigger
Earth	7,920 miles (12,740 km) across	1.34 million× bigger
Mount Everest	5.5 miles (8.849 km)	931× bigger
Eiffel Tower	1,083 ft (330 m)	34.7× bigger
Giganotosaurus	41 ft (12.5 m) long	9 ft 10 in (3 m) bigger
Tyrannosaurus rex	40 ft (12.3 m) long	9 ft 2 in (280 cm) bigger
School bus	40 ft (12.2 m) long	8 ft 10 in (270 cm) bigger
Whale shark	39 ft (12 m) long	8 ft 2 in (250 cm) bigger
Giant squid	39 ft (12 m) long	8 ft 2 in (250 cm) bigger
Fire truck	39 ft (12 m) long	8 ft 2 in (250 cm) bigger
Iguanodon	33 ft (10 m) long	1 ft 7.5 in (50 cm) bigger
Therizinosaurus	33 ft (10 m) long	1 ft 7.5 in (50 cm) bigger
Allosaurus	31 ft (9.5 m) long	0 pm smaller
Stegosaurus	30 ft (9 m) long	1 ft 7.5 in (50 cm) smaller
Triceratops	28 ft (8.5 m) long	3 ft 3 in (100 cm) smaller
Basking shark	26 ft (8 m) long	4 ft 11 in (150 cm) smaller
Carnotaurus	26 ft (8 m) long	4 ft 11 in (150 cm) smaller
Two-story house	26 ft (8 m)	4 ft 11 in (150 cm) smaller
Orca	25 ft (7.5 m) long	6 ft 7 in (200 cm) smaller
Stonehenge	24 ft (7.3 m)	7 ft 3 in (220 cm) smaller
Ankylosaurus	23 ft (7 m) long	8 ft 2 in (250 cm) smaller
Dilophosaurus	23 ft (7 m) long	8 ft 2 in (250 cm) smaller
Average man (world)	5 ft 7 in (171 cm)	5.6× smaller
Average woman (world)	5 ft 3 in (159 cm)	6× smaller

Where do these numbers come from?

Sizes are typical adult or reported values, rounded for readability. Read how we measure and compare sizes.

Silhouettes from PhyloPic: Parasaurolophus by Jack Mayer Wood. See credits.