True-scale A vs. B

Spinosaurus vs. Giganotosaurus: two 100-million-year-old giants

Spinosaurus leads by about one metre in length, 14 m to 13 m. Their representative masses are close at roughly 7.4 and 7.2 tonnes.

Spinosaurus14 m7.4 t

Giganotosaurus13 m7.2 t

Spinosaurus restored in its Cretaceous river habitat

0 mRepresentative body length14 m

Spinosaurus14 m

Giganotosaurus13 m

All bars share one linear metre scale. Human height and animal body length use different orientations, noted on each detail page.

Interactive true-scale view

Spinosaurus and Giganotosaurus on one ground plane

Spinosaurus is 1 m longer; displayed masses differ by only 0.2 tonnes. A 1.7 m human is included as a constant visual reference when it is not already one of the subjects.

Preparing the true-scale scene...

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Spinosaurus14 mDetailed 3D model

Giganotosaurus13 mTrue-scale proxy

Human1.7 mDetailed 3D model

Wireframe subjects mark exact display dimensions where a detailed GLB is not yet available.

Quick answer

The measurable difference

Spinosaurus leads by about one metre in length, 14 m to 13 m. Their representative masses are close at roughly 7.4 and 7.2 tonnes.

Why this matchup matters

Different bodies, not just different numbers

They show how two similar-mass predators can occupy very different silhouettes: one long and river-adapted, the other a deep-skulled terrestrial hunter.

Human scale

How the gap feels

The one-metre difference is a little over half a reference-human height. The sail makes Spinosaurus look taller through the torso even when hip heights are comparable.

Evidence boundary

What the comparison cannot prove

Both species are incompletely known and lived in different regions. The page compares fossil reconstructions rather than implying a real encounter.

Side-by-side data

Actual display values

Subject	Length	Height / depth	Mass	Evidence context
Spinosaurus	about 14 m long	sail rising above a low, long body	about 7.4 tonnes	The first important fossils were destroyed in 1944, and later discoveries repeatedly changed the reconstruction. Length and locomotion remain active research topics.
Giganotosaurus	about 13 m long	about 4 m at the hips	about 7.2 tonnes	No complete skeleton is known. Missing portions must be reconstructed from related carcharodontosaurids, so both length and mass should be read as representative estimates.

Evidence

Spinosaurus and Giganotosaurus on one ground plane

The measurable difference

Different bodies, not just different numbers

How the gap feels

What the comparison cannot prove

Actual display values

Sources and measurement notes

Inspect each animal separately

Spinosaurus

Giganotosaurus

Keep comparing on the same scale

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