Centimeters to Inches Converter

Fast, precise online length converter between centimeters (cm) and inches (in). Features exact fractional math, ruler fraction approximations, and instant copying.

Centimeters to Inches Converter

Best solution

Default conversion: 10 cm is 3.937 inches; nearest 1/16-inch mark: 3 15/16 in.

Quick:
Converted ValueFormula-based conversion
3.937inches
Fraction / Feet:3 15/16 in (3.94″)
Millimeters (up to 2 decimals):100 mm
inches = cm ÷ 2.54 (10 ÷ 2.54 = 3.937)
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Methodology & calculation rule

Inches = Centimeters ÷ 2.54

1 inch = exactly 2.54 cm by international standard

One international inch is exactly 2.54 centimeters. Decimal answers are rounded to four places; ruler fractions are rounded separately to the nearest sixteenth. A displayed ruler mark is not an actual-size ruler or a tolerance guarantee. NIST unit conversion reference.

Related conversions

Centimeters, decimal inches, and nearest sixteenth-inch marks
IntervalDecimal inchesNearest 1/16-inch mark
1 cm 0.39373/8 in
2 cm 0.787413/16 in
3 cm 1.18111 3/16 in
4 cm 1.57481 9/16 in
5 cm 1.96851 15/16 in
6 cm 2.36222 3/8 in
7 cm 2.75592 3/4 in
8 cm 3.14963 1/8 in
9 cm 3.54333 9/16 in
10 cm 3.9373 15/16 in
11 cm 4.33074 5/16 in
12 cm 4.72444 3/4 in
13 cm 5.11815 1/8 in
14 cm 5.51185 1/2 in
15 cm 5.90555 7/8 in
16 cm 6.29926 5/16 in
17 cm 6.69296 11/16 in
18 cm 7.08667 1/16 in
19 cm 7.48037 1/2 in
20 cm 7.8747 7/8 in
21 cm 8.26778 1/4 in
22 cm 8.66148 11/16 in
23 cm 9.05519 1/16 in
24 cm 9.44889 7/16 in
25 cm 9.84259 13/16 in
26 cm 10.236210 1/4 in
27 cm 10.629910 5/8 in
28 cm 11.023611 in
29 cm 11.417311 7/16 in
30 cm 11.81111 13/16 in
31 cm 12.204712 3/16 in
32 cm 12.598412 5/8 in
33 cm 12.992113 in
34 cm 13.385813 3/8 in
35 cm 13.779513 3/4 in
36 cm 14.173214 3/16 in
37 cm 14.566914 9/16 in
38 cm 14.960614 15/16 in
39 cm 15.354315 3/8 in
40 cm 15.74815 3/4 in
41 cm 16.141716 1/8 in
42 cm 16.535416 9/16 in
43 cm 16.929116 15/16 in
44 cm 17.322817 5/16 in
45 cm 17.716517 11/16 in
46 cm 18.110218 1/8 in
47 cm 18.503918 1/2 in
48 cm 18.897618 7/8 in
49 cm 19.291319 5/16 in
50 cm 19.68519 11/16 in
51 cm 20.078720 1/16 in
52 cm 20.472420 1/2 in
53 cm 20.866120 7/8 in
54 cm 21.259821 1/4 in
55 cm 21.653521 5/8 in
56 cm 22.047222 1/16 in
57 cm 22.440922 7/16 in
58 cm 22.834622 13/16 in
59 cm 23.228323 1/4 in
60 cm 23.62223 5/8 in
61 cm 24.015724 in
62 cm 24.409424 7/16 in
63 cm 24.803124 13/16 in
64 cm 25.196925 3/16 in
65 cm 25.590625 9/16 in
66 cm 25.984326 in
67 cm 26.37826 3/8 in
68 cm 26.771726 3/4 in
69 cm 27.165427 3/16 in
70 cm 27.559127 9/16 in
71 cm 27.952827 15/16 in
72 cm 28.346528 3/8 in
73 cm 28.740228 3/4 in
74 cm 29.133929 1/8 in
75 cm 29.527629 1/2 in
76 cm 29.921329 15/16 in
77 cm 30.31530 5/16 in
78 cm 30.708730 11/16 in
79 cm 31.102431 1/8 in
80 cm 31.496131 1/2 in
81 cm 31.889831 7/8 in
82 cm 32.283532 5/16 in
83 cm 32.677232 11/16 in
84 cm 33.070933 1/16 in
85 cm 33.464633 7/16 in
86 cm 33.858333 7/8 in
87 cm 34.25234 1/4 in
88 cm 34.645734 5/8 in
89 cm 35.039435 1/16 in
90 cm 35.433135 7/16 in
91 cm 35.826835 13/16 in
92 cm 36.220536 1/4 in
93 cm 36.614236 5/8 in
94 cm 37.007937 in
95 cm 37.401637 3/8 in
96 cm 37.795337 13/16 in
97 cm 38.18938 3/16 in
98 cm 38.582738 9/16 in
99 cm 38.976439 in
100 cm 39.370139 3/8 in

Frequently Asked Questions

How do I convert centimeters to inches?

Divide your length measurement in centimeters by 2.54. For example, 10 cm ÷ 2.54 = 3.9370 inches.

Why does 1 inch equal exactly 2.54 centimeters?

In 1959, the International Yard and Pound agreement defined the international inch as exactly 25.4 millimeters (2.54 centimeters).

Can I swap the conversion to inches to centimeters?

Yes, click the Swap button in the calculator to reverse the conversion direction instantly.