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How Big Is a Spinosaurus?

A spinosaurus is about 46 ft (14 m) long. That is about 8.2 times as long as the average man is tall. A huge sail-backed dinosaur that hunted fish.

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How big is a spinosaurus compared to the average man?

A spinosaurus is about 8.2 times as long as the average man is tall. A spinosaurus is 8.2× the size of the average man: about 8.2 average men lined up would match it. By volume, about 117 average men would fit inside a spinosaurus.

Spinosaurus length in feet, inches, centimeters and meters

A spinosaurus measures:

Unit	Value
Feet and inches	45 ft 11 in
Inches	551 in
Centimeters	1400 cm
Meters	14 m

Spinosaurus size facts

Spinosaurus is estimated at about 12.5 to 14 meters long, possibly longer than T. rex.
The spines on its back were up to 1.65 meters tall.

How does a spinosaurus compare to other things?

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

Thing	Size	Compared to Spinosaurus
Sun	865,000 miles (1,393,000 km) across	99.5 million× bigger
Earth	7,920 miles (12,740 km) across	910,000× bigger
Mount Everest	5.5 miles (8.849 km)	632× bigger
Eiffel Tower	1,083 ft (330 m)	23.6× bigger
Great Sphinx of Giza	66 ft (20 m)	20 ft (6 m) bigger
Oak tree	66 ft (20 m)	20 ft (6 m) bigger
Palm tree	66 ft (20 m)	20 ft (6 m) bigger
Sperm whale	52 ft (16 m) long	6 ft 7 in (200 cm) bigger
Megalodon	52 ft (16 m) long	6 ft 7 in (200 cm) bigger
Humpback whale	49 ft (15 m) long	3 ft 3 in (100 cm) bigger
Mosasaurus	49 ft (15 m) long	3 ft 3 in (100 cm) bigger
Hubble Space Telescope	43 ft (13.2 m) long	2 ft 7.5 in (80 cm) smaller
Titanoboa	43 ft (13 m) long	3 ft 3 in (100 cm) smaller
Giganotosaurus	41 ft (12.5 m) long	4 ft 11 in (150 cm) smaller
Tyrannosaurus rex	40 ft (12.3 m) long	5 ft 7 in (170 cm) smaller
School bus	40 ft (12.2 m) long	5 ft 11 in (180 cm) smaller
Whale shark	39 ft (12 m) long	6 ft 7 in (200 cm) smaller
Giant squid	39 ft (12 m) long	6 ft 7 in (200 cm) smaller
Fire truck	39 ft (12 m) long	6 ft 7 in (200 cm) smaller
Iguanodon	33 ft (10 m) long	13 ft (4 m) smaller
Therizinosaurus	33 ft (10 m) long	13 ft (4 m) smaller
Allosaurus	31 ft (9.5 m) long	15 ft (4.5 m) smaller
Average man (world)	5 ft 7 in (171 cm)	8.2× smaller
Average woman (world)	5 ft 3 in (159 cm)	8.8× 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: Spinosaurus by Rhiannon Dixon. See credits.