Jurassic Park Dinosaur Size Comparison
Official Universal and Dino Tracker lengths, from Compsognathus at 1 m to Brachiosaurus at 21. Pick any two.
Visual comparison
All values
Click any row to load it as Entry A.
| Name | Value | Context | Source |
|---|---|---|---|
| Tyrannosaurus rex (Rexy) The JP3 Bull was smaller at 37 ft. | 12.2 m (40 ft) | 40 ft long, 16 ft tall | Universal / JurassicWorld.com: 40 ft long |
| Velociraptor (InGen clone) Real Velociraptor was turkey sized. Film clones stand 6 ft tall. | 3.9 m (12.8 ft) | Film clone, Blue measured 15 ft | Jurassic World Evolution 3 DinoDB: 3.9 m long, 1.7 m tall |
| Triceratops The sick Triceratops of the first film. | 9 m (29.5 ft) | 30 ft long | Universal press kit: 30 ft long |
| Brachiosaurus Longest herbivore on this list. Figures vary 20 to 22 m by chart. | 21.3 m (69.9 ft) | 70 ft long | Universal press kit: about 70 ft long |
| Stegosaurus Tail spikes add danger, not length. | 8 m (26.2 ft) | About 26 ft long | Universal / Lost World press kit: about 26 ft long |
| Parasaurolophus Crest carries the trombone call. | 10 m (32.8 ft) | About 33 ft long | Universal press kit: about 33 ft long |
| Gallimimus The flock from the first film chase. | 5.5 m (18 ft) | About 18 ft long | Universal press kit: about 18 ft long |
| Compsognathus Smallest on this list. | 1 m (3.3 ft) | About 3 ft long | Universal / Lost World press kit: about 3 ft long |
| Spinosaurus Longer than Rexy in film canon. Beat the T. rex on screen. | 13.5 m (44.3 ft) | JP3, 44 ft long | Universal JP3 press kit: 44 ft long |
| Mosasaurus Show scale. The films grow it between scenes. | 18 m (59.1 ft) | Lagoon show animal, 60 ft | Universal Jurassic World: 60 ft show length |
| Indominus rex (film) Wu states 50 ft fully grown. The film animal is 40 ft. | 12.2 m (40 ft) | 40 ft in the film | Jurassic Park Wiki citing film dialogue and charts: 40 ft |
| Indoraptor Prototype. Smaller and faster than its parent. | 7.3 m (24 ft) | Fallen Kingdom prototype, 24 ft | Universal Fallen Kingdom press kit: 24 ft long |
| Carnotaurus The horned hunter of the island stampede. | 8.8 m (28.9 ft) | About 29 ft long | Universal Fallen Kingdom press kit: about 29 ft long |
| Ankylosaurus Tail club over armor. | 8 m (26.2 ft) | About 26 ft long | Universal press kit: about 26 ft long |
| Pteranodon (wingspan) Listed by wingspan for honesty. | 7 m (23 ft) | Wingspan, not length | Universal press kit: 23 ft wingspan |
| Giganotosaurus Largest theropod in film canon. | 15.5 m (50.9 ft) | Dominion, about 51 ft long | Universal Dominion press kit: about 51 ft long |
About this converter
How big is the T. rex next to a raptor? Rexy runs 12.2 meters (40 ft) long and 16 ft tall, while an InGen Velociraptor runs 3.9 meters long and 6 ft tall, so one Rexy equals about three raptors nose to tail. The park spreads wider than those two: Compsognathus at 1 meter, Gallimimus at 5.5, Triceratops at 9, Parasaurolophus at 10, Spinosaurus at 13.5, Giganotosaurus at 15.5, Mosasaurus at 18 and Brachiosaurus at 21.3. Hybrids sit mid pack with Indoraptor at 7.3 and the film Indominus at 12.2. This page collects the official production lengths in one table so film canon stays separate from real fossil sizes.
How to use it
Pick two dinosaurs and a unit in the top row. The three boxes below stay linked: change any number and the other two update to the matching length. The bars below scale to the longest entry so gaps show at a glance, shown in the unit you picked. Ratios are exact divisions of the official numbers.
Two honest caveats. First, movies cheat scale for composition, and the Mosasaurus visibly grows between films, so a monster can look bigger in one shot than its official length. Second, charts disagree by a meter on mid size herbivores, so each entry names its source chart. Pteranodon is listed by wingspan, everything else by body length. Real fossil Velociraptor was turkey sized. Only the film clones are 6 ft tall.
FAQ
How big is the Jurassic Park T. rex?
Rexy is 12.2 meters (40 ft) long and 16 ft tall, per Universal. The JP3 Bull was smaller at 37 ft long.
How big are the Velociraptors really?
Film clones are 3.9 meters long and 6 ft tall. Real Velociraptor fossils are turkey sized at about 2 meters long.
What is bigger, Spinosaurus or T. rex?
In film canon the Spinosaurus at 13.5 meters (44 ft) runs longer than Rexy at 12.2 meters, which is why it won their JP3 fight.
How big is the Indominus rex?
12.2 meters (40 ft) in the film. Dr. Wu states 50 ft fully grown, and expanded material lists up to 55 ft as an adult.
Sources
- JurassicWorld.com Dino Tracker and film pages (Rexy 40 ft and show lengths)
- Universal Pictures press kits and ILM scale charts (herbivore and hybrid lengths)
- Jurassic World Evolution 2 and 3 DinoDB by Frontier (Velociraptor 3.9 m and licensed stats)
- Jurassic Park Wiki with primary source citations (Indominus film vs adult size cross-check)
Last verified: 2026-09-27 · 16 entries
More creature sizes converters
Godzilla and Kaiju Size Converter (Height Comparison)
How big is Godzilla? Compare 16 kaiju heights: Monsterverse Godzilla, Kong, Ghidorah, Shin Godzilla and more. Meters, feet and visual bars.
Aircraft Carrier Length Comparison (Overall Meters)
Compare 13 aircraft carrier overall lengths: Juan Carlos 231 m, De Gaulle 261, Queen Elizabeth 284, Fujian 316, Ford 333. Official navy figures in one table.
Airliner Length Comparison (Widebody Meters)
Compare 8 widebody airliner lengths in meters, from the A330neo at 63.69 m to the 777-9 at 76.72 m. Maker spec figures in a linked tool. for fans today.
← Jurassic Movie Runtime Comparison (Minutes) · Jurassic Park Movie Runtime Comparison (Minutes) →