What is being measured?
The Identification section gives an adult length of 12.3 m. The Fast Facts panel gives a broader 12–14 m range; this reference preserves the explicit 12.3 m estimate. This is a museum-published reconstruction estimate, not an exact living-animal measurement.
Use the named object, variant and dimension. A manufactured or natural object can differ from this reference.
- Dimension
- reconstructed body length
- Reference value
- 12.3 m
- Evidence
- Published reference measurement
- In metres
- 12.3 m
- Variant
- Adult reconstruction estimate
- Source range
- 12–14 m
- What the range means
- Broader reconstructed-length range in the museum Fast Facts panel; not a confidence interval.
Put the length in perspective
One Tyrannosaurus rex represents approximately 144 card lengths measured end to end. This is a length ratio; it does not calculate how the objects pack or fit.
Tyrannosaurus rex · 12.3 m
Metre · 1 m
Foot (international) · 0.3048 m