Spinosaurus Size Comparison
Spinosaurus 3D Viewer pairs published sail-backed figures with a 1.8 m person on screen - length about 14 m, hip height about 2.1 m, and weight about 7.4 tonnes (7400 kg) - so the theropod scale gap stays readable at a glance.
Spinosaurus published figures
The Spinosaurus facts panel and this table use the same real published measures (a range where sources disagree):
| Measure | Figure | Vs a 1.8 m person |
|---|---|---|
| Length | about 14 m (earlier estimates sometimes up to about 15 m; NHM / Sereno et al. 2022) | ~7.8x a person end-to-end at the 14 m figure |
| Hip height | about 2.1 m | ~1.2x adult standing height; model uses this for Size vs human |
| Weight | about 7.4 tonnes / 7400 kg | about 7.4 metric tons on the facts panel |
| Sail spines | elongated neural spines up to about 1.65 m | dorsal sail over the back on the procedural model |
| When it lived | 99-94 million years ago | Late Cretaceous; fossils from Egypt (1912 finds; named by Stromer, 1915) |
How the Spinosaurus size-vs-human toggle stays honest
The Spinosaurus model is drawn to a fixed on-screen length so it fits the canvas; the Size vs human control then places a 1.8 m person at the true length-to-hip-height ratio for the about 14 m figure (hip height about 2.1 m). Tap Size vs human under the canvas to show or hide the scale figure - the comparison is proportional, not a decorative sticker.
What a person would see beside a Spinosaurus
What a person would see is a hip line just above their own head: at about 2.1 m at the hip, a Spinosaurus hip line sits a little above a 1.8 m person's head. From snout to tail the animal spans about 14 m - turn on the person in the viewer and orbit beside a hind leg to feel how the long snout and dorsal sail tower past the scale figure.
What the Spinosaurus size numbers are not
What these size numbers are not is a claim of settled science: the Spinosaurus size comparison uses published estimates with an honest length range; skin and sail color are an artistic reconstruction, and a fully aquatic lifestyle is not settled science on the viewer page. For the control walkthrough see how to view Spinosaurus in 3D. For trade-offs versus phone AR apps see Spinosaurus 3D viewer vs AR apps.
Other dinosaurs to compare
Other dinosaurs in the collection make useful size comparisons too: Spinosaurus is one of the longest theropods here, so for a shorter but heavily armored herbivore, see the Stegosaurus 3D Viewer, or for the classic apex predator silhouette, see the Tyrannosaurus Rex 3D Viewer.
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