How big is a coconut crab?

The largest land crab: its legs can span about a meter. That is 1 m (3.3 ft) wide.

1 m wide · 3.3 ft

The largest land crab: its legs can span about a meter.

Smartphone 15 cm

Coconut crab 1 m

Coconut crab next to smartphone, drawn to scale.

Compared with things you know

A coconut crab is about 30× the length of a paperclip Paperclip: 3.3 cm
A coconut crab is about 17× the length of a house key House key: 6 cm
A coconut crab is about 6.7× the height of a Smartphone Smartphone: 15 cm
A coconut crab is about 1/1.7 the height of an average person Average person: 1.7 m

Think you could size it by eye? A coconut crab is one of the objects in Sizedle.