Centimeters to Inches Converter

How to convert centimeters to inches

inches = centimeters ÷ 2.54

1 centimeter is one hundredth of a meter (SI prefix centi, 10⁻²). 1 inch is exactly 25.4 millimeters.

Dividing by 2.54 is exact. Written as a multiplication the factor is a repeating decimal, 1 cm = 0.3937007874016… in, so a rounded multiplier such as 0.3937 is slightly off. This converter keeps the exact fraction (50/127) and rounds only the result it shows.

Worked example: 25 cm

1. Start with the value in centimeters: 25 cm.
2. Divide by 2.54, because 1 inch = 2.54 centimeters: 25 ÷ 2.54 = 9.842519685….
3. Round to the precision you need: 9.84 in to two decimals.
4. On a tape measure that is 9 13/16 in to the nearest 1/16.

Centimeters and inches side by side

Centimeters to inches chart

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Centimeters from 1 to 100 converted to inches with the exact factor, shown to five significant digits.

Centimeters to inches, part 1 of 4

cm	in	in, nearest 1/16
1	0.3937	3/8
2	0.7874	13/16
3	1.1811	1 3/16
4	1.5748	1 9/16
5	1.9685	1 15/16
6	2.3622	2 3/8
7	2.7559	2 3/4
8	3.1496	3 1/8
9	3.5433	3 9/16
10	3.937	3 15/16
11	4.3307	4 5/16
12	4.7244	4 3/4
13	5.1181	5 1/8
14	5.5118	5 1/2
15	5.9055	5 7/8
16	6.2992	6 5/16
17	6.6929	6 11/16
18	7.0866	7 1/16
19	7.4803	7 1/2
20	7.874	7 7/8
21	8.2677	8 1/4
22	8.6614	8 11/16
23	9.0551	9 1/16
24	9.4488	9 7/16
25	9.8425	9 13/16

Centimeters to inches, part 2 of 4

cm	in	in, nearest 1/16
26	10.236	10 1/4
27	10.63	10 5/8
28	11.024	11
29	11.417	11 7/16
30	11.811	11 13/16
31	12.205	12 3/16
32	12.598	12 5/8
33	12.992	13
34	13.386	13 3/8
35	13.78	13 3/4
36	14.173	14 3/16
37	14.567	14 9/16
38	14.961	14 15/16
39	15.354	15 3/8
40	15.748	15 3/4
41	16.142	16 1/8
42	16.535	16 9/16
43	16.929	16 15/16
44	17.323	17 5/16
45	17.717	17 11/16
46	18.11	18 1/8
47	18.504	18 1/2
48	18.898	18 7/8
49	19.291	19 5/16
50	19.685	19 11/16

Centimeters to inches, part 3 of 4

cm	in	in, nearest 1/16
51	20.079	20 1/16
52	20.472	20 1/2
53	20.866	20 7/8
54	21.26	21 1/4
55	21.654	21 5/8
56	22.047	22 1/16
57	22.441	22 7/16
58	22.835	22 13/16
59	23.228	23 1/4
60	23.622	23 5/8
61	24.016	24
62	24.409	24 7/16
63	24.803	24 13/16
64	25.197	25 3/16
65	25.591	25 9/16
66	25.984	26
67	26.378	26 3/8
68	26.772	26 3/4
69	27.165	27 3/16
70	27.559	27 9/16
71	27.953	27 15/16
72	28.346	28 3/8
73	28.74	28 3/4
74	29.134	29 1/8
75	29.528	29 1/2

Centimeters to inches, part 4 of 4

cm	in	in, nearest 1/16
76	29.921	29 15/16
77	30.315	30 5/16
78	30.709	30 11/16
79	31.102	31 1/8
80	31.496	31 1/2
81	31.89	31 7/8
82	32.283	32 5/16
83	32.677	32 11/16
84	33.071	33 1/16
85	33.465	33 7/16
86	33.858	33 7/8
87	34.252	34 1/4
88	34.646	34 5/8
89	35.039	35 1/16
90	35.433	35 7/16
91	35.827	35 13/16
92	36.22	36 1/4
93	36.614	36 5/8
94	37.008	37
95	37.402	37 3/8
96	37.795	37 13/16
97	38.189	38 3/16
98	38.583	38 9/16
99	38.976	39
100	39.37	39 3/8

Fractions of an inch in decimals and millimeters

Every value is exact: 1 inch is 25.4 mm by definition.

Inch fractions in decimals and millimeters, part 1 of 2

Fraction	Decimal in	mm
1/16 in	0.0625	1.5875
1/8 in	0.125	3.175
3/16 in	0.1875	4.7625
1/4 in	0.25	6.35
5/16 in	0.3125	7.9375
3/8 in	0.375	9.525
7/16 in	0.4375	11.1125
1/2 in	0.5	12.7

Inch fractions in decimals and millimeters, part 2 of 2

Fraction	Decimal in	mm
9/16 in	0.5625	14.2875
5/8 in	0.625	15.875
11/16 in	0.6875	17.4625
3/4 in	0.75	19.05
13/16 in	0.8125	20.6375
7/8 in	0.875	22.225
15/16 in	0.9375	23.8125
1 in	1	25.4

inches = centimeters ÷ 2.54. Factors: NIST SP 811, NIST Handbook 44, BIPM SI Brochure. unitcheck.net/length/centimeters-to-inches/

Common values

Going the other way? Use the Inches to Centimeters converter.