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Inch to Centimeter Converter

Convert Inch (in) to Centimeter (cm) instantly. Enter any value — result updates live.

Length Converter
Result
2.54cm
click to copy
Formula: 1 in = 2.54 cm

About converting Inch to Centimeter

Converting Inch to Centimeter is a common length conversion. One inch (in) equals 2.54 centimeter (cm). Inches are used for screen sizes, pipe diameters, and small measurements in the US and UK.

This conversion is commonly needed for athletics and sports measurements, shipping and package dimensions, textile and fabric cutting. Centimeters are commonly used for body measurements, clothing sizes, and screen dimensions.

To put inch in perspective: a smartphone screen (about 6 in diagonal). In centimeter, common references include a standard ruler (30 cm).

Did you know?

The inch was traditionally defined as the width of a man's thumb, and later as three barleycorns laid end to end.

Real-world examples
Inch (in)
  • the diameter of a quarter coin (about 1 in)
  • a smartphone screen (about 6 in diagonal)
  • a standard pizza (12–14 in)
Centimeter (cm)
  • the width of a fingernail (about 1 cm)
  • a credit card length (8.5 cm)
  • a standard ruler (30 cm)
Did you know?

The centimeter became part of the metric system in the 1790s alongside the meter, as a convenient fraction for everyday measurements.

Common uses for length conversion

People frequently convert between inch and centimeter for:

  • travel planning and navigation
  • construction and home improvement
  • athletics and sports measurements
  • shipping and package dimensions
  • textile and fabric cutting
Popular Inch to Centimeter conversions
Inch (in)Centimeter (cm)
1 in2.54 cm
2 in5.08 cm
5 in12.7 cm
10 in25.4 cm
15 in38.1 cm
20 in50.8 cm
25 in63.5 cm
30 in76.2 cm
50 in127 cm
100 in254 cm
200 in508 cm
500 in1,270 cm
1000 in2,540 cm
More Inch conversions
Inch to Meterin → mInch to Kilometerin → kmInch to Millimeterin → mmInch to Milein → miInch to Yardin → ydInch to Footin → ftInch to Nautical Milein → nmiInch to Nanometerin → nm
Frequently asked questions
How do you convert Inch to Centimeter?
To convert Inch to Centimeter, use the formula: 1 in = 2.54 cm. For example, 1 in = 2.54 cm.
What is 1 Inch in Centimeter?
1 in is equal to 2.54 cm.
How many inch are in 1 centimeter?
1 cm is equal to 0.393700787 in. To convert Centimeter back to Inch, multiply the centimeter value by 0.393700787.
When would I need to convert inch to centimeter?
This conversion is commonly needed for travel planning and navigation, construction and home improvement, athletics and sports measurements. Inches are used for screen sizes, pipe diameters, and small measurements in the US and UK. Centimeters are commonly used for body measurements, clothing sizes, and screen dimensions.
What does 1 inch look like in real life?
For reference, a typical inch measurement is the diameter of a quarter coin (about 1 in). So 1 in (2.54 cm) gives you a practical sense of scale.