Loading the chart…

How Big Is a T. Rex?

A T. rex is about 40 ft (12.3 m) long. That is about 7.2 times as long as the average man is tall. The famous tyrant lizard king.

Pinch or scroll to zoom · drag to pan · tap anything to fly to it

Chart title (for saved images)

Arrange

Order Spacing

Display

Units

Labels Background Height lines

How big is a T. rex compared to the average man?

A T. rex is about 7.2 times as long as the average man is tall. A T. rex is 7.2× the size of the average man: about 7.2 average men lined up would match it. By volume, about 133 average men would fit inside a T. rex.

Tyrannosaurus Rex length in feet, inches, centimeters and meters

A T. rex measures:

Unit	Value
Feet and inches	40 ft 4 in
Inches	484 in
Centimeters	1230 cm
Meters	12.3 m

Tyrannosaurus Rex size facts

The largest T. rex skeleton, "Sue", is about 12.3 meters (40 ft) long.
Its hips stood about 3.7 to 4 meters off the ground.
Adults are estimated at about 8 to 9 tonnes.

How does a T. rex compare to other things?

A T. rex next to 24 things of similar size, plus some everyday references:

Thing	Size	Compared to Tyrannosaurus rex
Sun	865,000 miles (1,393,000 km) across	113 million× bigger
Earth	7,920 miles (12,740 km) across	1.04 million× bigger
Mount Everest	5.5 miles (8.849 km)	719× bigger
Eiffel Tower	1,083 ft (330 m)	26.8× bigger
Sperm whale	52 ft (16 m) long	12 ft (3.7 m) bigger
Megalodon	52 ft (16 m) long	12 ft (3.7 m) bigger
Humpback whale	49 ft (15 m) long	8 ft 10 in (270 cm) bigger
Mosasaurus	49 ft (15 m) long	8 ft 10 in (270 cm) bigger
Spinosaurus	46 ft (14 m) long	5 ft 7 in (170 cm) bigger
Hubble Space Telescope	43 ft (13.2 m) long	2 ft 11.5 in (90 cm) bigger
Titanoboa	43 ft (13 m) long	2 ft 3.5 in (70 cm) bigger
Giganotosaurus	41 ft (12.5 m) long	7.9 in (20 cm) bigger
School bus	40 ft (12.2 m) long	3.9 in (10 cm) smaller
Whale shark	39 ft (12 m) long	12 in (30 cm) smaller
Giant squid	39 ft (12 m) long	12 in (30 cm) smaller
Fire truck	39 ft (12 m) long	12 in (30 cm) smaller
Iguanodon	33 ft (10 m) long	7 ft 7 in (230 cm) smaller
Therizinosaurus	33 ft (10 m) long	7 ft 7 in (230 cm) smaller
Allosaurus	31 ft (9.5 m) long	9 ft 2 in (280 cm) smaller
Parasaurolophus	31 ft (9.5 m) long	9 ft 2 in (280 cm) smaller
Stegosaurus	30 ft (9 m) long	11 ft (3.3 m) smaller
Triceratops	28 ft (8.5 m) long	12 ft (3.8 m) smaller
Average man (world)	5 ft 7 in (171 cm)	7.2× smaller
Average woman (world)	5 ft 3 in (159 cm)	7.7× 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: Tyrannosaurus rex by JFstudios. See credits.