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Inches to Centimeters Converter

1 inch = 2.54 cm. Enter any value to convert inches (in) to centimeters (cm), or use the table below for common values.

Results

1 in =2.54 cminches → centimeters
1 in2.54 cm
1 cm0.3937007874 in
Formula
cm = in × 2.54
1 in in other units
UnitValue
millimeters (mm)25.4
centimeters (cm)2.54
meters (m)0.0254
kilometers (km)0.0000254
feet (ft)0.08333333333
yards (yd)0.02777777778
miles (mi)0.00001578282828
nautical miles (nmi)0.00001371490281

Formula

cm = in × 2.54

Example: 10 in = 25.4 cm. To convert the other way, use in = cm × 0.3937007874.

Quick mental estimate: multiply by about 2.5.

Inches to Centimeters conversion table

Inches (in)Centimeters (cm)
1 in2.54 cm
2 in5.08 cm
3 in7.62 cm
4 in10.16 cm
5 in12.7 cm
6 in15.24 cm
7 in17.78 cm
8 in20.32 cm
9 in22.86 cm
10 in25.4 cm
15 in38.1 cm
20 in50.8 cm
25 in63.5 cm
30 in76.2 cm
40 in101.6 cm
50 in127 cm
75 in190.5 cm
100 in254 cm
250 in635 cm
500 in1,270 cm
1,000 in2,540 cm

About inches and centimeters

The inch is defined as exactly 2.54 centimeters (international agreement of 1959). It is used in the US and UK for screen sizes, lumber, fasteners and body height.

The centimeter is one hundredth of a meter. It is used for body height, clothing sizes and everyday objects in almost every country outside the United States.

Other Length conversions

Centimeters → InchesReverse conversionMillimeters → Centimetersmm → cmMeters → Centimetersm → cmKilometers → Centimeterskm → cmInches → Millimetersin → mmInches → Metersin → mInches → Kilometersin → kmInches → Feetin → ftInches → Yardsin → ydInches → Milesin → miInches → Nautical Milesin → nmiFeet → Centimetersft → cmYards → Centimetersyd → cmMiles → Centimetersmi → cmNautical Miles → Centimetersnmi → cm

Frequently asked questions

How do I convert inches to centimeters?

Use the formula cm = in × 2.54. For example, 10 in = 25.4 cm.

What is 1 inch in centimeters?

1 in = 2.54 cm.

How do I convert centimeters back to inches?

Use in = cm × 0.3937007874. 1 cm = 0.3937007874 in.