Everyday · #896 biggest of 1,014
How big is a key?
5 cm
A key measures 5 cm. That's about 2.08 coins lined up end to end.
By the numbers
- That's 5 cm, or about 1.97 inches.
- You'd need about 34 of them stacked up to reach the height of an average adult.
- Roughly 714 human-hair widths could line up across it.
- Out of all 1,014 things in this collection, it ranks #896 by size.
Size comparison
How key stacks up against things of a similar size. Tap any bar to explore it.
shrimp
5.0 cm
butterfly
5.0 cm
grasshopper
5.0 cm
caterpillar
5.0 cm
key
5.0 cm
AA battery
5.0 cm
USB flash drive
5.0 cm
quartz point
5.0 cm
arrowhead
5.0 cm
Bars use a logarithmic scale so everything fits — real differences are even more extreme!
Fun fact
You could line up roughly 34 of them along the height of an average person.
More in Everyday
Tip: swipe, use the arrow keys, or scroll past the edge to jump between sizes.