approximately how tall was the tyrannosaurus rex

Tyrannosaurus rex was roughly 12 to 13 feet (about 3.6 to 4 meters) tall at the hips in its normal horizontal walking posture.

If you imagine it rearing into a more upright pose, it would stand over 20 feet (around 6.5 meters) tall from the ground to the tip of its head, according to modern reconstructions based on large specimens like “Sue” and “Scotty.”