Inches (in) to Centimeters (cm) Converter

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

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

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

Inversely (or reciprocally),

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

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 inches to an equivalent quantity of length expressed in centimeters (in to cm). Both formulas will yield the same result. The formulas are:

cm = in ร— 2.54 ย  ย โ†’ This is the formula based on the multiplication conversion factor.

and

cm = in รท 0.39370078740157 ย  ย โ†’ This is the formula based on the division conversion factor.

A note on the inches to centimeters formula based on the division 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 รท 0.4

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

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 inches to centimeters.

For example, if you have a length of 75 inches that you want to convert to centimeters, you would use either of the two formulas as follows:

cm = 75 in ร— 2.54 = 190.5 cm
cm = 75 in รท 0.39370078740157 = 190.5 cm

So, the result is the same using either formula, which is 190.5 centimeters.

Inches to centimeters (in to cm) 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 inches to centimeters is needed, here is a inches-to-centimeters conversion chart for your quick and easy reference. This conversion chart (or conversion table) shows common measurement values of length in inches and their equivalent measurement values in centimeters. These equivalent measurement values may be rounded off to 1 or 2 decimal places when it is mathematically expedient for everyday applications.

inches (in)centimeters (cm)
1 in2.54 cm
2 in5.08 cm
3 in7.62 cm
4 in10.16 cm
5 in12.70 cm
6 in15.24 cm
7 in17.78 cm
8 in20.32 cm
9 in22.86 cm
10 in25.40 cm
11 in27.94 cm
12 in30.48 cm
13 in33.02 cm
14 in35.56 cm
15 in38.10 cm
16 in40.64 cm
17 in43.18 cm
18 in45.72 cm
19 in48.26 cm
20 in50.80 cm
21 in53.34 cm
22 in55.88 cm
23 in58.42 cm
24 in60.96 cm
25 in63.50 cm
26 in66.04 cm
27 in68.58 cm
28 in71.12 cm
29 in73.66 cm
30 in76.20 cm
31 in78.74 cm
32 in81.28 cm
33 in83.82 cm
34 in86.36 cm
35 in88.90 cm
36 in91.44 cm
37 in93.98 cm
38 in96.52 cm
39 in99.06 cm
40 in101.60 cm
41 in104.14 cm
42 in106.68 cm
43 in109.22 cm
44 in111.76 cm
45 in114.30 cm
46 in116.84 cm
47 in119.38 cm
48 in121.92 cm
49 in124.46 cm
50 in127.00 cm
51 in129.54 cm
52 in132.08 cm
53 in134.62 cm
54 in137.16 cm
55 in139.70 cm
56 in142.24 cm
57 in144.78 cm
58 in147.32 cm
59 in149.86 cm
60 in152.40 cm
61 in154.94 cm
62 in157.48 cm
63 in160.02 cm
64 in162.56 cm
65 in165.10 cm
66 in167.64 cm
67 in170.18 cm
68 in172.72 cm
69 in175.26 cm
70 in177.80 cm
71 in180.34 cm
72 in182.88 cm
73 in185.42 cm
74 in187.96 cm
75 in190.50 cm
76 in193.04 cm
77 in195.58 cm
78 in198.12 cm
79 in200.66 cm
80 in203.20 cm
81 in205.74 cm
82 in208.28 cm
83 in210.82 cm
84 in213.36 cm
85 in215.90 cm
86 in218.44 cm
87 in220.98 cm
88 in223.52 cm
89 in226.06 cm
90 in228.60 cm
91 in231.14 cm
92 in233.68 cm
93 in236.22 cm
94 in238.76 cm
95 in241.30 cm
96 in243.84 cm
97 in246.38 cm
98 in248.92 cm
99 in251.46 cm
100 in254.00 cm
inches (in)centimeters (cm)
101 in256.54 cm
102 ft259.08 cm
103 ft261.62 cm
104 ft264.16 cm
105 ft266.70 cm
106 ft269.24 cm
107 ft271.78 cm
108 ft274.32 cm
109 ft276.86 cm
110 ft279.40 cm
111 ft281.94 cm
112 ft284.48 cm
113 ft287.02 cm
114 ft289.56 cm
115 ft292.10 cm
116 ft294.64 cm
117 ft297.18 cm
118 ft299.72 cm
119 ft302.26 cm
120 ft304.80 cm
121 ft307.34 cm
122 ft309.88 cm
123 ft312.42 cm
124 ft314.96 cm
125 ft317.50 cm
126 ft320.04 cm
127 ft322.58 cm
128 ft325.12 cm
129 ft327.66 cm
130 ft330.20 cm
131 ft332.74 cm
132 ft335.28 cm
133 ft337.82 cm
134 ft340.36 cm
135 ft342.90 cm
136 ft345.44 cm
137 ft347.98 cm
138 ft350.52 cm
139 ft353.06 cm
140 ft355.60 cm
141 ft358.14 cm
142 ft360.68 cm
143 ft363.22 cm
144 ft365.76 cm
145 ft368.30 cm
146 ft370.84 cm
147 ft373.38 cm
148 ft375.92 cm
149 ft378.46 cm
150 ft381.00 cm
151 ft383.54 cm
152 ft386.08 cm
153 ft388.62 cm
154 ft391.16 cm
155 ft393.70 cm
156 ft396.24 cm
157 ft398.78 cm
158 ft401.32 cm
159 ft403.86 cm
160 ft406.40 cm
161 ft408.94 cm
162 ft411.48 cm
163 ft414.02 cm
164 ft416.56 cm
165 ft419.10 cm
166 ft421.64 cm
167 ft424.18 cm
168 ft426.72 cm
169 ft429.26 cm
170 ft431.80 cm
171 ft434.34 cm
172 ft436.88 cm
173 ft439.42 cm
174 ft441.96 cm
175 ft444.50 cm
176 ft447.04 cm
177 ft449.58 cm
178 ft452.12 cm
179 ft454.66 cm
180 ft457.20 cm
181 ft459.74 cm
182 ft462.28 cm
183 ft464.82 cm
184 ft467.36 cm
185 ft469.90 cm
186 ft472.44 cm
187 ft474.98 cm
188 ft477.52 cm
189 ft480.06 cm
190 ft482.60 cm
191 ft485.14 cm
192 ft487.68 cm
193 ft490.22 cm
194 ft492.76 cm
195 ft495.30 cm
196 ft497.84 cm
197 ft500.38 cm
198 ft502.92 cm
199 ft505.46 cm
200 ft508.00 cm

Conversion of 1 inch (in) to other units of length

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

  • 1 inch (in) = 25,400,000 nanometers (nm)
  • 1 inch (in) = 25,400 micrometers (ยตm)
  • 1 inch (in) = 25.4 millimeters (mm)
  • 1 inch (in) = 2.54 centimeters (cm)
  • 1 inch (in) = 0.254 decimeter (dm)
  • 1 inch (in) = 0.0254 meter (m)
  • 1 inch (in) = 0.0000254 kilometer (km)
  • 1 inch (in) = 0.083333333333333 feet (ft)
  • 1 inch (in) = 0.027777777777778 yard (yd)
  • 1 inch (in) = 0.000015782828282828 mile (mi)
  • 1 inch (in) = 0.000013714902807775 nautical mile (nmi)

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.

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.