# Convert centimeters to inches

Enter the number of centimeters you want to convert to inches in the text box below. The conversion to length in inches will update as you type.

centimeters (cm)
1 centimeters = 0.394 inches

## Precise decimal and fraction answers

The conversion in inches rounded to six significant decimal places is 1 cm = 0.393701 in. The precise fraction answer is 50/127 in.

### Decimal Precision

Conversion from one to ten decimal places

• 1 cm = 0.4 in
• 1 cm = 0.39 in
• 1 cm = 0.394 in
• 1 cm = 0.3937 in
• 1 cm = 0.39370 in
• 1 cm = 0.393701 in
• 1 cm = 0.3937008 in
• 1 cm = 0.39370079 in
• 1 cm = 0.393700787 in
• 1 cm = 0.3937007874 in

## Answer in feet and inches

1 cm equals 25/64 in using feet, inches and fractional inches instead of decimals as is traditional in the imperial system. This calculation is accurate to the nearest 1/64th of an inch.

## How many inches are in a centimeter?

There are 0.394 inches in one centimeter. A centimeter is 39.37% of an inch. An inch is 154% longer than one centimeter.

## Centimeters to inches conversion factor and formulas

Formula

The conversion factor between centimeters and inches is 2.54. This represents the ratio of centimeters per one inch. To calculate the value in inches, we can either divide by the conversion factor or multiply by its inverse.

### Division

To convert from centimeters to inches, divide centimeters by 2.54.
The formula is expressed as:
cm ÷ 2.54 = in

### Multiplication

Alternatively we can multiply by the inverse conversion factor to get the same result.
The inverse of 2.54 is 1/2.54 or 0.394. To convert from centimeters to inches, multiply centimeters by 0.394.
The formula is expressed as:
cm × 0.394 = in

Converting centimeters to inches is a conversion between units from separate unit systems - centimeters are metric (SI) defined units while inches are US Customary / UK Imperial .

SI Unit

Within the SI (metric) system of measurement, the centimeter is officially defined as one hundredth (1/100) of a meter. It is commonly used as measurement from shorter lengths. Internationally it is spelled 'centimetre' whereas the U.S. spells it 'centimeter'. The symbol for centimeters is cm.

Customary/Imperial Unit

The inch is a length measurement within US Customary and British Imperial units of measure. It is officially defined as 25.4 millimeters. Twelve inches equal one foot and thirty six inches equal a yard in the US/Imperial systems. The abbreviation for inches is either in or " as in 12". When measuring in inches, it is common to subdivide the inch into fractional portions like a half-inch, quarter-inch, eighth of an inch etc. instead of using decimals. Inches are frequently used in the building construction trades in the US and Canada. Internationally, inches are a common measurement of tire size and display screen sizes. Historically the inch is derived from the width of an adult thumb.

## Reverse this conversion

Convert from inches to centimeters instead.

## 1 centimeters to other length units

### Metric

• 1 cm = 1×10-5 km
• 1 cm = 0.01 m
• 1 cm = 0.1 dm
• 1 cm = 1 cm
• 1 cm = 10 mm
• 1 cm = 10,000 µ
• 1 cm = 1×107 nm

### Imperial/U.S.

• 1 cm = 6.214×10-6 mi
• 1 cm = 0.011 yd
• 1 cm = 0.033 ft
• 1 cm = 0.394 in

## References and Citations

1. International Bureau of Weights and Measures (BIPM) The International System of Units (SI)
2. National Institute of Standards and Technology (NIST) General Tables of Units of Measurement

## Centimeters to inches conversion table

cm in
1 cm 0.394 in
2 cm 0.787 in
3 cm 1.181 in
4 cm 1.575 in
5 cm 1.969 in
6 cm 2.362 in
7 cm 2.756 in
8 cm 3.15 in
9 cm 3.543 in
10 cm 3.937 in
cm in
20 cm 7.874 in
30 cm 11.811 in
40 cm 15.748 in
50 cm 19.685 in
60 cm 23.622 in
70 cm 27.559 in
80 cm 31.496 in
90 cm 35.433 in
100 cm 39.37 in
1,000 cm 393.701 in