1 decimetre

"10cm" redirects here. For the Korean band, see 10cm (band).

Click on the thumbnail image to jump to the desired Human-scale order of length magnitude article: top-left is 1E-6 m, lower-right is 1E5 m.

An adult human foot is about 28 centimetres long.

To help compare different orders of magnitude this page lists lengths between 10 centimetres and 100 centimetres (10⁻¹ metre and 1 metre).

Conversions [edit]

10 centimetres (abbreviated to 10 cm) is equal to

10 cm = 1.0 dm^{[note 1]} – wavelength of the highest UHF radio frequency, 3 GHz
12 cm = 1.2 dm – wavelength of the 2.45 GHz ISM radio band
21 cm = 2.1 dm – wavelength of the 1.4 GHz hydrogen emission line, a hyperfine transition of the hydrogen atom
100 cm = 10 dm – wavelength of the lowest UHF radio frequency, 300 MHz

10.16 cm = 1.016 dm — 1 hand used in measuring height of horses (4 inches)
12 cm = 1.2 dm — diameter of a Compact Disc (CD) (= 120 mm)
15 cm = 1.5 dm — length of a Bic pen with cap on
22 cm = 2.2 dm — diameter of a typical soccer ball
30.48 cm = 3.048 dm — 1 foot
30 cm = 3 dm — typical school-use ruler length (= 300 mm)
60 cm = 6 dm — standard depth (front to back) of a domestic kitchen worktop in Europe (= 600 mm)
90 cm = 9 dm — average length of a rapier, a fencing sword^[1]
91.44 cm = 9.144 dm — one yard
Cigarettes 100 mm (4 in) in length

10 cm = 1 dm — diameter of the human cervix upon entering the second stage of labour^{[citation needed]}
14 cm = 1.4 dm — length of average human penis^{[citation needed]}
15 cm = 1.5 dm — approximate size of largest beetle species^{[citation needed]}
29 cm = 2.9 dm — length of average human foot^{[citation needed]}
29.98 cm = distance light travels in one nanosecond
31 cm = 3.1 dm — wingspan of largest butterfly species Ornithoptera alexandrae^{[citation needed]}
50 to 65 cm — a pizote's tail^{[citation needed]}
66 cm — length of the longest pine cones (produced by the Sugar Pine^[2])

^ ^a ^b ^c m is an abbreviation of metre; cm of centimetre; dm of decimetre; m² is short for square metre; m³ is short for cubic metre

^ http://www.2-clicks-swords.com/article/what-is-a-rapier.html
^ Bohun B. Kinloch, Jr. and William H. Scheuner. "Pinus lambertiana". Archived from the original on 8 June 2011. Retrieved June 2011.

v t e Orders of magnitude for length in E notation
shorter than one metre:
<-12	−12	−11	−10	−9	−8	−7	−6	−5	−4	−3	−2	−1	0
longer than 1 metre:
1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26