What is the formula to convert cm to inches?

To convert centimeters to inches, divide the centimeter value by 2.54 (Inches = cm ÷ 2.54).

How many inches are in 1 centimeter?

1 centimeter is equal to approximately 0.393701 inches.

What is 30 cm in inches?

30 cm is equal to 11.811 inches (or approximately 11 13/16 inches).

Is this cm to inches converter free to use?

Yes, this online length converter is 100% free to use with no registration or login required.

CM to Inches Live Converter

CM to Inches Converter

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Tip: type a length in cm to get decimal inches and the nearest tape measure fraction. Several values (new line, space or semicolon) and decimals like 12.5 or 12,5 also work.

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Standard imperial-metric scale

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Passport & medical heights

CM to Feet

Human height real-world (ft/in)

Example 1: Convert 60 cm to Inches

Step	Calculation	Result
1. Divide by 2.54	60 / 2.54	23.62 in (to 2 decimals)
2. Count 1/16 marks	Inches x 16, rounded	378 marks of 1/16
3. Whole inches	Marks / 16, whole part	23 in
4. Leftover marks	Marks - 16 x 23	10/16
5. Reduce and join	Lowest terms	23 5/8 in

60 cm = 23.62 in = 23 5/8 in on a tape measure.

Example 2: Convert 100 cm to Inches

Step	Calculation	Result
1. Divide by 2.54	100 / 2.54	39.37 in (to 2 decimals)
2. Count 1/16 marks	Inches x 16, rounded	630 marks of 1/16
3. Whole inches	Marks / 16, whole part	39 in
4. Leftover marks	Marks - 16 x 39	6/16
5. Reduce and join	Lowest terms	39 3/8 in

100 cm = 39.37 in = 39 3/8 in on a tape measure.

Clothing Waist & Display Screen Chart (CM to Inches)

Centimeters	Decimal Inches	Ruler Fraction
10	3.94	3 15/16"
25	9.84	9 13/16"
40	15.75	15 3/4"
60	23.62	23 5/8"
80	31.50	31 1/2"
100	39.37	39 3/8"

Waist and Body Measurement Chart (60 to 120 cm)

Centimeters	Decimal Inches	Ruler Fraction
60	23.62	23 5/8"
62	24.41	24 7/16"
64	25.20	25 3/16"
66	25.98	26"
68	26.77	26 3/4"
70	27.56	27 9/16"
72	28.35	28 3/8"
74	29.13	29 1/8"
76	29.92	29 15/16"
78	30.71	30 11/16"
80	31.50	31 1/2"
82	32.28	32 5/16"
84	33.07	33 1/16"
86	33.86	33 7/8"
88	34.65	34 5/8"
90	35.43	35 7/16"
92	36.22	36 1/4"
94	37.01	37"
96	37.80	37 13/16"
98	38.58	38 9/16"
100	39.37	39 3/8"
102	40.16	40 3/16"
104	40.94	40 15/16"
106	41.73	41 3/4"
108	42.52	42 1/2"
110	43.31	43 5/16"
112	44.09	44 1/8"
114	44.88	44 7/8"
116	45.67	45 11/16"
118	46.46	46 7/16"
120	47.24	47 1/4"

Display Screen Size Chart (Inches to CM)

Screen Diagonal	CM
13"	33.02
14"	35.56
15.6"	39.62
17"	43.18
21.5"	54.61
24"	60.96
27"	68.58
32"	81.28
40"	101.60
43"	109.22
50"	127.00
55"	139.70
65"	165.10
75"	190.50
85"	215.90

CM to Inches Chart (1 to 100 cm)

Centimeters	Decimal Inches	Ruler Fraction
1	0.39	3/8"
2	0.79	13/16"
3	1.18	1 3/16"
4	1.57	1 9/16"
5	1.97	1 15/16"
6	2.36	2 3/8"
7	2.76	2 3/4"
8	3.15	3 1/8"
9	3.54	3 9/16"
10	3.94	3 15/16"
11	4.33	4 5/16"
12	4.72	4 3/4"
13	5.12	5 1/8"
14	5.51	5 1/2"
15	5.91	5 7/8"
16	6.30	6 5/16"
17	6.69	6 11/16"
18	7.09	7 1/16"
19	7.48	7 1/2"
20	7.87	7 7/8"
21	8.27	8 1/4"
22	8.66	8 11/16"
23	9.06	9 1/16"
24	9.45	9 7/16"
25	9.84	9 13/16"
26	10.24	10 1/4"
27	10.63	10 5/8"
28	11.02	11"
29	11.42	11 7/16"
30	11.81	11 13/16"
31	12.20	12 3/16"
32	12.60	12 5/8"
33	12.99	13"
34	13.39	13 3/8"
35	13.78	13 3/4"
36	14.17	14 3/16"
37	14.57	14 9/16"
38	14.96	14 15/16"
39	15.35	15 3/8"
40	15.75	15 3/4"
41	16.14	16 1/8"
42	16.54	16 9/16"
43	16.93	16 15/16"
44	17.32	17 5/16"
45	17.72	17 11/16"
46	18.11	18 1/8"
47	18.50	18 1/2"
48	18.90	18 7/8"
49	19.29	19 5/16"
50	19.69	19 11/16"
51	20.08	20 1/16"
52	20.47	20 1/2"
53	20.87	20 7/8"
54	21.26	21 1/4"
55	21.65	21 5/8"
56	22.05	22 1/16"
57	22.44	22 7/16"
58	22.83	22 13/16"
59	23.23	23 1/4"
60	23.62	23 5/8"
61	24.02	24"
62	24.41	24 7/16"
63	24.80	24 13/16"
64	25.20	25 3/16"
65	25.59	25 9/16"
66	25.98	26"
67	26.38	26 3/8"
68	26.77	26 3/4"
69	27.17	27 3/16"
70	27.56	27 9/16"
71	27.95	27 15/16"
72	28.35	28 3/8"
73	28.74	28 3/4"
74	29.13	29 1/8"
75	29.53	29 1/2"
76	29.92	29 15/16"
77	30.31	30 5/16"
78	30.71	30 11/16"
79	31.10	31 1/8"
80	31.50	31 1/2"
81	31.89	31 7/8"
82	32.28	32 5/16"
83	32.68	32 11/16"
84	33.07	33 1/16"
85	33.46	33 7/16"
86	33.86	33 7/8"
87	34.25	34 1/4"
88	34.65	34 5/8"
89	35.04	35 1/16"
90	35.43	35 7/16"
91	35.83	35 13/16"
92	36.22	36 1/4"
93	36.61	36 5/8"
94	37.01	37"
95	37.40	37 3/8"
96	37.80	37 13/16"
97	38.19	38 3/16"
98	38.58	38 9/16"
99	38.98	39"
100	39.37	39 3/8"

Ruler Fractions to CM (1/16 to 1 inch)

Ruler Fraction	Decimal Inches	CM
1/16"	0.0625	0.16
1/8"	0.1250	0.32
3/16"	0.1875	0.48
1/4"	0.2500	0.64
5/16"	0.3125	0.79
3/8"	0.3750	0.95
7/16"	0.4375	1.11
1/2"	0.5000	1.27
9/16"	0.5625	1.43
5/8"	0.6250	1.59
11/16"	0.6875	1.75
3/4"	0.7500	1.91
13/16"	0.8125	2.06
7/8"	0.8750	2.22
15/16"	0.9375	2.38
1"	1.0000	2.54

Common Sizes in CM and Inches

Object	CM	Decimal Inches	Ruler Fraction
Credit card width (ISO 7810)	8.56	3.37	3 3/8"
Credit card height (ISO 7810)	5.4	2.13	2 1/8"
A5 paper width	14.8	5.83	5 13/16"
A4 paper width	21	8.27	8 1/4"
A4 paper length	29.7	11.69	11 11/16"
A3 paper length	42	16.54	16 9/16"
US Letter width (8.5 in)	21.59	8.50	8 1/2"
US Letter length (11 in)	27.94	11.00	11"
Standard school ruler	30	11.81	11 13/16"
Meter stick	100	39.37	39 3/8"

Technical Q&A / FAQ Matrix

Technical Developer Question	Exact Solution & Code Snippet
How do I convert cm to inches in JavaScript?	`(60 / 2.54).toFixed(2) // 23.62`
How do I convert cm to inches in Python?	`round(60 / 2.54, 2)`
How do I convert cm to inches in Go?	`fmt.Printf("%.2f", 60/2.54)`
How do I convert cm to inches in Java?	`String.format("%.2f", 60 / 2.54)`
How do I convert cm to inches in C#?	`(60 / 2.54).ToString("F2")`
How do I convert cm to inches in PHP?	`echo round(60 / 2.54, 2);`
How do I convert cm to inches in Rust?	`format!("{:.2}", 60.0 / 2.54)`
How do I convert cm to inches on Linux?	`awk 'BEGIN { printf "%.2f\n", 60 / 2.54 }'`
How do I get a tape measure fraction in JavaScript?	`const frac = (cm, d = 16) => { const q = Math.round(cm / 2.54 * d), w = Math.floor(q / d), r = q % d, g = (a, b) => b ? g(b, a % b) : a; return r ? w + ' ' + r / g(r, d) + '/' + d / g(r, d) : '' + w }; // frac(60) = 23 5/8`
How do I get a tape measure fraction in Python?	`from fractions import Fraction; w, r = divmod(round(60 / 2.54 * 16), 16); print(w, Fraction(r, 16)) # 23 5/8`
How do I convert cm to inches by hand?	`Divide the centimeters by 2.54. 60 / 2.54 = 23.622, which rounds to 23.62 in.`
How do I turn decimal inches into a ruler fraction?	`Multiply the decimal part by 16 and round. 0.622 x 16 = 9.95, so 10/16, which reduces to 5/8. 60 cm = 23 5/8 in.`
Why do I divide by 2.54?	`The inch is defined as exactly 2.54 centimeters, so dividing centimeters by 2.54 gives inches.`
How many inches is 100 cm?	`39.37 in, or 39 3/8 in on a tape measure.`
How do I convert inches back to cm?	`Multiply by 2.54. For example 23.62 in x 2.54 = 59.99 cm, and 24 in = 60.96 cm.`
Why can the fraction differ from the decimal?	`A tape measure only has marks every 1/16 inch (or 1/8, 1/32), so the fraction is the nearest mark. 25 cm is 9.84 in, which is 9 13/16 in at 1/16 and 9 7/8 in at 1/8.`