Body · #573 biggest of 1,014

How big is a human arm?

75 cm

A human arm measures 75 cm. That's about 8.76 credit cards lined up end to end.

By the numbers

That's 75 cm, or about 29.5 inches.
You'd need about 2.27 of them stacked up to reach the height of an average adult.
Roughly 8.76 credit cards could line up across it.
Out of all 1,014 things in this collection, it ranks #573 by size.

How human arm stacks up against things of a similar size. Tap any bar to explore it.

human arm

75.0 cm

Bars use a logarithmic scale so everything fits — real differences are even more extreme!

You could line up roughly 2.27 of them along the height of an average person.

spine

70 cm

human leg

90 cm

human hair (length)

60 cm

femur (thigh bone)

48 cm

humerus bone

36 cm

human foot

26 cm

Tip: swipe, use the arrow keys, or scroll past the edge to jump between sizes.