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Length converter

Centimeters to Inches

Converting Centimeters to Inches is a single multiplication when you know the factor. One cm equals 0.39370079 in, so multiply the value in cm by 0.39370079. The calculator below works in both directions and accepts decimals.

Formula 1 cm = 0.39370079 in

Need the other direction? Inches to Centimeters.

How to convert Centimeters to Inches

The centimetre is one hundredth of a metre and is common in clothing and furniture sizes. The inch is defined as exactly 2.54 centimetres, which anchors the whole imperial length system.

To convert Centimeters to Inches, multiply the value in cm by 0.39370079. For example, 10 cm × 0.39370079 = 3.937008 in. This works because the ratio between the two units is constant for every value in length.

Worked examples

cmin
1 cm0.39370079 in
2.5 cm0.98425197 in
5 cm1.968504 in
10 cm3.937008 in
25 cm9.84252 in
50 cm19.685039 in
100 cm39.370079 in

Reverse conversion

incm
1 in2.54 cm
5 in12.7 cm
10 in25.4 cm
25 in63.5 cm
50 in127 cm
100 in254 cm

When this conversion is useful

This is the calculation you need when you are working across metric and imperial measurements, shopping abroad or reading a spec sheet. Because the factor is fixed, you can use the same number for a single measurement or for a batch: 1,000 cm is 393.700787 in.

Is the conversion exact?

Yes for practical use: the factors come from international definitions, with rounding applied only for display.

Reference: BIPM SI Brochure and NIST SP 811. Last reviewed: 2026-11-01.

cm to in conversion chart

The chart lists the most requested values. For a value that is not here, use the converter at the top of the page.

Centimeters (cm)Inches (in)
1 cm0.39370079 in
2 cm0.78740157 in
3 cm1.181102 in
4 cm1.574803 in
5 cm1.968504 in
6 cm2.362205 in
7 cm2.755906 in
8 cm3.149606 in
9 cm3.543307 in
10 cm3.937008 in
11 cm4.330709 in
12 cm4.724409 in
13 cm5.11811 in
14 cm5.511811 in
15 cm5.905512 in
16 cm6.299213 in
17 cm6.692913 in
18 cm7.086614 in
19 cm7.480315 in
20 cm7.874016 in
21 cm8.267717 in
22 cm8.661417 in
23 cm9.055118 in
24 cm9.448819 in
25 cm9.84252 in
26 cm10.23622 in
27 cm10.629921 in
28 cm11.023622 in
29 cm11.417323 in
30 cm11.811024 in
31 cm12.204724 in
32 cm12.598425 in
33 cm12.992126 in
34 cm13.385827 in
35 cm13.779528 in
36 cm14.173228 in
37 cm14.566929 in
38 cm14.96063 in
39 cm15.354331 in
40 cm15.748031 in
41 cm16.141732 in
42 cm16.535433 in
43 cm16.929134 in
44 cm17.322835 in
45 cm17.716535 in
46 cm18.110236 in
47 cm18.503937 in
48 cm18.897638 in
49 cm19.291339 in
50 cm19.685039 in
60 cm23.622047 in
70 cm27.559055 in
80 cm31.496063 in
90 cm35.433071 in
100 cm39.370079 in

Frequently asked questions

How many Inches are in 1 Centimeters?

1 cm equals 0.39370079 in.

How do I convert Centimeters to Inches?

Multiply the cm value by 0.39370079. Example: 25 cm = 9.84252 in.

What is 2.5 cm in in?

2.5 cm = 0.98425197 in.

Is the cm to in conversion exact?

Yes for practical use: the factors come from international definitions, with rounding applied only for display.

Does the calculator work offline?

Yes. The conversion runs in your browser with JavaScript, so it works after the page has loaded, even without a connection.

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