The inch, once the size of a barleycorn kernel, has fascinating origins. Early English measurement systems based it on the width of a man’s thumb. In the 14th century, King Edward II of England formalized it, defining an inch as the length of three barleycorns laid end to end. Historically, the inch was crucial for countless innovations, especially in Anglo-Saxon countries, influencing everything from watchmaking to industrial design.
Today, the inch still plays an integral role in areas like screen sizes and standardized paper dimensions, delighting both tech enthusiasts and everyday users. Interestingly, in surveying, an inch is divided into hundredths in the US, showing its adaptability in precision tasks. Despite the global shift towards the metric system, the inch endures, showcasing its resilience and continued relevance.
The centimeter, one of the most widely used units of length, is part of the metric system, adopted globally for scientific and everyday measurements. It’s fascinating to note that the word “centimeter” originates from the Latin “centum,” meaning one hundred, as it represents one-hundredth of a meter. This small unit elegantly balances precision and convenience, making it perfect for measuring dimensions where millimeters might be too small and meters too large.
Despite its widespread use today, the metric system, including the centimeter, was only officially established during the French Revolution in 1799. Prior to this, measurement systems varied greatly across regions and often led to confusion. The adoption of a standardized measurement system was revolutionary, facilitating trade, science, and engineering across borders.
| Inches | Centimeters |
|---|---|
0
in
|
0
cm
|
1
in
|
2.54
cm
|
2
in
|
5.08
cm
|
3
in
|
7.62
cm
|
4
in
|
10.16
cm
|
5
in
|
12.7
cm
|
6
in
|
15.24
cm
|
7
in
|
17.78
cm
|
8
in
|
20.32
cm
|
9
in
|
22.86
cm
|
10
in
|
25.4
cm
|
11
in
|
27.94
cm
|
12
in
|
30.48
cm
|
13
in
|
33.02
cm
|
14
in
|
35.56
cm
|
15
in
|
38.1
cm
|
16
in
|
40.64
cm
|
17
in
|
43.18
cm
|
18
in
|
45.72
cm
|
19
in
|
48.26
cm
|
20
in
|
50.8
cm
|
21
in
|
53.34
cm
|
22
in
|
55.88
cm
|
23
in
|
58.42
cm
|
24
in
|
60.96
cm
|
25
in
|
63.5
cm
|
26
in
|
66.04
cm
|
27
in
|
68.58
cm
|
28
in
|
71.12
cm
|
29
in
|
73.66
cm
|
30
in
|
76.2
cm
|
31
in
|
78.74
cm
|
32
in
|
81.28
cm
|
33
in
|
83.82
cm
|
34
in
|
86.36
cm
|
35
in
|
88.9
cm
|
36
in
|
91.44
cm
|
37
in
|
93.98
cm
|
38
in
|
96.52
cm
|
39
in
|
99.06
cm
|
40
in
|
101.6
cm
|
41
in
|
104.14
cm
|
42
in
|
106.68
cm
|
43
in
|
109.22
cm
|
44
in
|
111.76
cm
|
45
in
|
114.3
cm
|
46
in
|
116.84
cm
|
47
in
|
119.38
cm
|
48
in
|
121.92
cm
|
49
in
|
124.46
cm
|
50
in
|
127
cm
|
51
in
|
129.54
cm
|
52
in
|
132.08
cm
|
53
in
|
134.62
cm
|
54
in
|
137.16
cm
|
55
in
|
139.7
cm
|
56
in
|
142.24
cm
|
57
in
|
144.78
cm
|
58
in
|
147.32
cm
|
59
in
|
149.86
cm
|
60
in
|
152.4
cm
|
61
in
|
154.94
cm
|
62
in
|
157.48
cm
|
63
in
|
160.02
cm
|
64
in
|
162.56
cm
|
65
in
|
165.1
cm
|
66
in
|
167.64
cm
|
67
in
|
170.18
cm
|
68
in
|
172.72
cm
|
69
in
|
175.26
cm
|
70
in
|
177.8
cm
|
71
in
|
180.34
cm
|
72
in
|
182.88
cm
|
73
in
|
185.42
cm
|
74
in
|
187.96
cm
|
75
in
|
190.5
cm
|
76
in
|
193.04
cm
|
77
in
|
195.58
cm
|
78
in
|
198.12
cm
|
79
in
|
200.66
cm
|
80
in
|
203.2
cm
|
81
in
|
205.74
cm
|
82
in
|
208.28
cm
|
83
in
|
210.82
cm
|
84
in
|
213.36
cm
|
85
in
|
215.9
cm
|
86
in
|
218.44
cm
|
87
in
|
220.98
cm
|
88
in
|
223.52
cm
|
89
in
|
226.06
cm
|
90
in
|
228.6
cm
|
91
in
|
231.14
cm
|
92
in
|
233.68
cm
|
93
in
|
236.22
cm
|
94
in
|
238.76
cm
|
95
in
|
241.3
cm
|
96
in
|
243.84
cm
|
97
in
|
246.38
cm
|
98
in
|
248.92
cm
|
99
in
|
251.46
cm
|
100
in
|
254
cm
|
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