How big is a blue whale heart?

A preserved blue whale heart is about 1.5 meters tall. That is 1.5 m (4.9 ft) tall.

1.5 m tall · 4.9 ft

A preserved blue whale heart is about 1.5 meters tall.

Average person 1.7 m

Blue whale heart 1.5 m

Blue whale heart next to average person, drawn to scale.

Compared with things you know

A blue whale heart is about 10× the height of a Smartphone Smartphone: 15 cm
A blue whale heart is about 1/1.1 the height of an average person Average person: 1.7 m
A blue whale heart is about 1/1.3 the height of a basketball player Basketball player: 2 m
A blue whale heart is about 1/1.4 the height of a door Door: 2.03 m

Think you could size it by eye? A blue whale heart is one of the objects in Sizedle.