Centimeters (cm) to Inches (in) Converter

This length unit converter dynamically calculates a value you enter in centimeters (cm) and converts it to its equivalent value in inches (in).

How many centimeters (cm) are in 1 inch (in)? What is the formula for how to convert centimeters to inches (cm to in)?

1 centimeter (cm) = 0.39370078740157 inch (in)
So we can say that there is 0.39370078740157 inch in 1 centimeter.
This means that the multiplication conversion factor to convert a quantity expressed in a centimeter unit of measurement to an equivalent quantity expressed in an inch unit of measurement is 0.39370078740157.

Inversely (or reciprocally),

1 inch (in) = 2.54 centimeters (cm)
So we can say that there are 2.54 centimeters in 1 inch.
This means that the division conversion factor to convert a quantity expressed in a centimeter unit of measurement to an equivalent quantity expressed in an inch unit of measurement is 2.54.

Knowing this inverse mathematical relationship between the two conversion factors and their reciprocal operations, we can derive two formulas to calculate and convert a quantity of length expressed in centimeters to an equivalent quantity of length expressed in inches (cm to in). Both formulas will yield the same result. The formulas are:

in = cm ร— 0.39370078740157 ย  ย โ†’ This is the formula based on the multiplication conversion factor.

and

in = cm รท 2.54 ย  ย โ†’ This is the formula based on the division conversion factor.

A note on the centimeters to inches formula based on the multiplication conversion factor:

For everyday manual calculations where a high degree of precision is not required, it is acceptable to use the approximation:

in โ‰ˆ cm ร— 0.4

Using a multiplication factor of 0.4 provides a rough estimation that is suitable for quick calculations for converting centimeters to inches.

On the other hand, if a precise conversion is necessary, such as in scientific or engineering applications, it is recommended to use the more accurate multiplication factor of 0.39370078740157 to minimize rounding errors and ensure greater accuracy in the conversion from centimeters to inches.

For example, if you have a length of 100 centimeters that you want to convert to inches, you would use either of the two formulas as follows:

in = 100 cm ร— 0.39370078740157 = 39.370078740157 in
in = 100 cm รท 2.54 = 39.370078740157 in

So, the result is the same using either formula, which is 39.370078740157 inches or 39.37 inches when rounded off.

Centimeters to inches (cm to in) conversion chart

To save you time and effort spent on having to perform manual calculations or look up conversion formulas every time a conversion from centimeters to inches is needed, here is a centimeters-to-inches conversion chart for your quick and easy reference. This conversion chart (or conversion table) shows common measurement values of length in centimeters and their equivalent measurement values in inches. These equivalent measurement values may be rounded off to 1 or 2 decimal places when it is mathematically expedient for everyday applications.

centimeters (cm)inches (in)
1 cm0.4 in
2 cm0.8 in
3 cm1.2 in
4 cm1.6 in
5 cm2 in
6 cm2.4 in
7 cm2.8 in
8 cm3.1 in
9 cm3.5 in
10 cm3.9 in
11 cm4.3 in
12 cm4.7 in
13 cm5.1 in
14 cm5.5 in
15 cm5.9 in
16 cm6.3 in
17 cm6.7 in
18 cm7.1 in
19 cm7.5 in
20 cm7.9 in
21 cm8.3 in
22 cm8.7 in
23 cm9.1 in
24 cm9.4 in
25 cm9.8 in
26 cm10.2 in
27 cm10.6 in
28 cm11 in
29 cm11.4 in
30 cm11.8 in
31 cm12.2 in
32 cm12.6 in
33 cm13 in
34 cm13.4 in
35 cm13.8 in
36 cm14.2 in
37 cm14.6 in
38 cm15 in
39 cm15.4 in
40 cm15.7 in
41 cm16.1 in
42 cm16.5 in
43 cm16.9 in
44 cm17.3 in
45 cm17.7 in
46 cm18.1 in
47 cm18.5 in
48 cm18.9 in
49 cm19.3 in
50 cm19.7 in
51 cm20.1 in
52 cm20.5 in
53 cm20.9 in
54 cm21.3 in
55 cm21.7 in
56 cm22 in
57 cm22.4 in
58 cm22.8 in
59 cm23.2 in
60 cm23.6 in
61 cm24 in
62 cm24.4 in
63 cm24.8 in
64 cm25.2 in
65 cm25.6 in
66 cm26 in
67 cm26.4 in
68 cm26.8 in
69 cm27.2 in
70 cm27.6 in
71 cm28 in
72 cm28.3 in
73 cm28.7 in
74 cm29.1 in
75 cm29.5 in
76 cm29.9 in
77 cm30.3 in
78 cm30.7 in
79 cm31.1 in
80 cm31.5 in
81 cm31.9 in
82 cm32.3 in
83 cm32.7 in
84 cm33.1 in
85 cm33.5 in
86 cm33.9 in
87 cm34.3 in
88 cm34.6 in
89 cm35 in
90 cm35.4 in
91 cm35.8 in
92 cm36.2 in
93 cm36.6 in
94 cm37 in
95 cm37.4 in
96 cm37.8 in
97 cm38.2 in
98 cm38.6 in
99 cm39 in
100 cm39.4 in
centimeters (cm)inches (in)
101 cm39.8 in
102 cm40.2 in
103 cm40.6 in
104 cm40.9 in
105 cm41.3 in
106 cm41.7 in
107 cm42.1 in
108 cm42.5 in
109 cm42.9 in
110 cm43.3 in
111 cm43.7 in
112 cm44.1 in
113 cm44.5 in
114 cm44.9 in
115 cm45.3 in
116 cm45.7 in
117 cm46.1 in
118 cm46.5 in
119 cm46.9 in
120 cm47.2 in
121 cm47.6 in
122 cm48 in
123 cm48.4 in
124 cm48.8 in
125 cm49.2 in
126 cm49.6 in
127 cm50 in
128 cm50.4 in
129 cm50.8 in
130 cm51.2 in
131 cm51.6 in
132 cm52 in
133 cm52.4 in
134 cm52.8 in
135 cm53.1 in
136 cm53.5 in
137 cm53.9 in
138 cm54.3 in
139 cm54.7 in
140 cm55.1 in
141 cm55.5 in
142 cm55.9 in
143 cm56.3 in
144 cm56.7 in
145 cm57.1 in
146 cm57.5 in
147 cm57.9 in
148 cm58.3 in
149 cm58.7 in
150 cm59.1 in
151 cm59.4 in
152 cm59.8 in
153 cm60.2 in
154 cm60.6 in
155 cm61 in
156 cm61.4 in
157 cm61.8 in
158 cm62.2 in
159 cm62.6 in
160 cm63 in
161 cm63.4 in
162 cm63.8 in
163 cm64.2 in
164 cm64.6 in
165 cm65 in
166 cm65.4 in
167 cm65.7 in
168 cm66.1 in
169 cm66.5 in
170 cm66.9 in
171 cm67.3 in
172 cm67.7 in
173 cm68.1 in
174 cm68.5 in
175 cm68.9 in
176 cm69.3 in
177 cm69.7 in
178 cm70.1 in
179 cm70.5 in
180 cm70.9 in
181 cm71.3 in
182 cm71.7 in
183 cm72 in
184 cm72.4 in
185 cm72.8 in
186 cm73.2 in
187 cm73.6 in
188 cm74 in
189 cm74.4 in
190 cm74.8 in
191 cm75.2 in
192 cm75.6 in
193 cm76 in
194 cm76.4 in
195 cm76.8 in
196 cm77.2 in
197 cm77.6 in
198 cm78 in
199 cm78.3 in
200 cm78.7 in

Conversion of 1 centimeter (cm) to other units of length

Here is a reference list providing a conversion of 1 centimeter (cm) to its equivalent values in various units of length, both metric and imperial:

  • 1 centimeter (cm) = 10,000,000 nanometers (nm)
  • 1 centimeter (cm) = 10,000 micrometers (ยตm)
  • 1 centimeter (cm) = 10 millimeters (mm)
  • 1 centimeter (cm) = 0.1 decimeter (dm)
  • 1 centimeter (cm) = 0.01 meter (m)
  • 1 centimeter (cm) = 0.00001 kilometer (km)
  • 1 centimeter (cm) = 0.39370078740157 inch (in)
  • 1 centimeter (cm) = 0.032808398950131 foot (ft)
  • 1 centimeter (cm) = 0.010936132983377 yard (yd)
  • 1 centimeter (cm) = 0.0000062137119223733 mile (mi)
  • 1 centimeter (cm) = 0.0000053995680345572 nautical mile (nmi)

What is a centimeter (cm)?

Definition of centimeter: A centimeter is a unit of length in the International System of Units (SI), commonly known as the metric system. It is equal to one hundredth of a meter (10^-2 m). It is often used for everyday measurements involving shorter distances than meters, such as human height.

The abbreviation for centimeter is cm. The single Unicode character ใŽ (U+339D) represents the 2-character Latin abbreviation for centimeter. The Windows Alt code for this character ใŽ is Alt + 13213.

What is an inch (in)?

Definition of inch: An inch is an imperial and US customary unit of length equal to 1/12 of a foot or 2.54 centimeters. It is often used in the United States and the United Kingdom, that follow these measurement systems for small measurements such as in construction and carpentry.

The abbreviation for inch is in. The single Unicode character ใŒ (U+33CC) represents the 2-character Latin abbreviation for inch. The Windows Alt code for this character ใŒ is Alt + 13260.

The informal symbol for inch is represented by a double prime (โ€ณ) or double quote (โ€œ). For example, 12 inches can be written as 12โ€ณ.