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  7. Convert cm to inches

Convert cm to inches

Convert Centimeter (cm) to Inch (in) instantly.

Choose how you want the answer displayed.

1cm=0.393701in

Quick ConversionConverted
1 cm0.393701 in
2.54 cm1 in
5 cm1.968504 in
10 cm3.937008 in
30 cm11.811024 in
50 cm19.685039 in
100 cm39.370079 in
180 cm70.866142 in

Centimeter

A centimeter (cm), also spelled centimetre, is a metric unit of length in the International System of Units. The centi- prefix means one hundredth.

One centimeter is equal to 1/100 of a meter (m), 10 millimeters (mm), and 1/2.54 of an inch.

Same length, two labels

1 cm = 0.393701 in

cm
00.250.50.751
in
00.0984250.196850.2952760.393701
matchBoth colored scales mark the same physical length, showing the conversion relationship for this pair.

Inch

An inch (in or ") is a customary and imperial unit of length.

One inch is equal to 1/12 of a foot (ft), 1/36 of a yard (yd), and exactly 2.54 centimeters (cm).

How to Convert Centimeter to Inch

Mathematically, inch (in or ") = centimeter (cm) multiplied by the conversion factor shown below.

1 cm = 0.393701 in

1 in = 2.54 cm

1 cm x 0.393701 = 0.393701 in

The distance in inch (in or ") is the distance in centimeter (cm) multiplied by 0.393701.

distance(in) = distance(cm) x 0.393701

Or:

in = cm x 0.393701

Formula: value × 0.393700787402

Example: 15 cm = 5.905512 in

Example #1

Convert 12 centimeter to inch:

12 cm x 0.393701 = 4.724409 in

Example #2

Convert 72 centimeter to inch:

72 cm x 0.393701 = 28.346457 in

  1. Start with the length in centimeters (cm).
  2. Divide by 2.54 to convert centimeters into inches (in, also written with the double-prime mark: ").
  3. For example, 2.54 cm = 1 in, 10 cm = 3.937 in, and 25.4 cm = 10 in.
  4. Round the inch result according to the context, such as nearest tenth, nearest quarter inch, or a precise decimal.

Precision note: Use the exact relationship 1 in = 2.54 cm. Round only after deciding whether the result is for display, sizing, or precise comparison.

How many cm in inches and inches in cm

1 cm = 0.393701 in

1 in = 2.54 cm

If you are starting with inch instead, use the inches to cm page.

Centimeter [cm]Inch [in or "]
0.1 cm0.03937 in
0.5 cm0.19685 in
2 cm0.787402 in
3 cm1.181102 in
15 cm5.905512 in
20 cm7.874016 in
25 cm9.84252 in
40 cm15.748031 in
75 cm29.527559 in
150 cm59.055118 in
200 cm78.740157 in
250 cm98.425197 in

Choosing a Rounding Style

Choose the rounding style based on how the inch result will be used. Decimal inches are usually best for calculators, spreadsheets, engineering notes, and product data that may be converted again later.

For customer-facing copy, one decimal place or a familiar fraction can be easier to read. For example, 10 cm is 3.937 in, which may be shown as 3.9 in for a quick size note or about 4 in for a rough description.

For fit, clearance, hardware, frames, shelves, clothing, and packaging, keep extra precision until the final decision. Avoid rounding down when the question is whether something will physically fit.

Common Use Cases for cm to in

  • Converting product dimensions from centimeters to inches.
  • Checking clothing, craft, or furniture measurements across unit systems.
  • Comparing metric dimensions with inch-based hardware or packaging sizes.
  • Preparing international product copy for readers who expect inches.

FAQ

How many inches are in one centimeter?

One centimeter is about 0.393701 inches.

How many centimeters are in one inch?

One inch is exactly 2.54 centimeters.

Is 10 cm about 4 inches?

Yes. 10 cm is about 3.937 inches, which is close to 4 inches.

More Centimeter conversions

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