How long is 20 cm?
It can be tough to picture a specific length like 20 cm in your head. To make it easier, our guide shows you how 20 cm stacks up against hundreds of familiar objects, from everyday items to famous landmarks. See the size of 20 centimeters in a way that makes sense.
20 cm in other units
- Convert 20 cm to in = 7.874016 in
- Convert 20 cm to ft = 0.656168 ft
- Convert 20 cm to km = 0.0002 km
- Convert 20 cm to m = 0.2 m
- Convert 20 cm to mm = 200 mm
Visualizing 20 cm: Real-World comparisons
Standard brick (length): 19.4 cm
They're virtually the same length—it's tough to see a difference.
A4 Paper (width): 21 cm
That's a nearly perfect match for this item's size.
No. 2 Pencil (new): 19 cm
20 cm has an extra 5% in length compared to this.
US Letter paper (width): 21.6 cm
20 cm is about 7% shorter than this item.
Soccer ball (size 5, diameter): 22 cm
To match this item's length, 20 cm would need to be 9% longer.
#10 Envelope (length): 24.1 cm
This item is longer—20 cm falls short by about 17%.
iPad Air (11", height): 24.7 cm
This item is longer; 20 cm measures about 19% less.
Dinner plate (diameter): 27 cm
This item is longer; 20 cm measures about 26% less.
US Dollar bill (length): 15.6 cm
You're looking at a 28% increase in length from this item to 20 cm.
American Football (length): 28 cm
20 cm comes up about 29% short of this item's full length.