Convert 5 Inch (in) to Centimeter (cm).

5 Inch equals 12.7 Centimeter. Multiply 5 by 2.54.

5 Inch = 12.7 Centimeter | UnitConvertLab

Worked example: converting Inch to Centimeter

Step 1 — start with the formula. cm = in × 2.54
Step 2 — substitute your figure. 5 in × 2.54
Step 3 — read the result. 5 in = 12.7 cm
Step 4 — check it in reverse. in = cm × 0.3937007874 returns 5 in, which matches the figure you started with.

Length Converter

31 units available

Decimals:

From

To

12.7

5 in = 12.7 cm

Formula:

cm = in × 2.54

With your value: 5 in = 12.7 cm

How big is that?

Everyday references on a logarithmic scale, all expressed in inch so you can sanity-check the result.

Credit card (long side) (1/1.5 your value)3.37 in

Your value5.00 in

A4 sheet (height) (2.3× your value)11.7 in

Adult stride (5.9× your value)29.5 in

Standard door height (16× your value)78.7 in

London double-decker bus (87× your value)433 in

Other Inch to Centimeter conversions

1 in to cm 2 in to cm 3 in to cm 4 in to cm 6 in to cm 7 in to cm 8 in to cm Full Inch to Centimeter converter

Inch to Centimeter Conversion Table

Inch (in)	Centimeter (cm)
0.5	1.27
1	2.54
2	5.08
5	12.7
10	25.4
15	38.1
20	50.8
25	63.5
50	127
100	254
250	635
500	1,270
1000	2,540

Centimeter to Inch Conversion Table

Centimeter (cm)	Inch (in)
0.5	0.19685
1	0.393701
2	0.787402
5	1.968504
10	3.937008
15	5.905512
20	7.874016
25	9.84252
50	19.685039
100	39.370079
250	98.425197
500	196.850394
1000	393.700787

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Inch (in)

Length

Exact conversion

1 inch = 25.4 mm exactly, fixed by the 1959 international yard and pound agreement.

Source: International Yard and Pound Agreement of 1959; NIST Federal Register Notice 59-5442

US, UK, Canada, Australia, New Zealand, South Africa · Reviewed 2026-07-01

Centimeter (cm)

Length

Exact conversion

Traceable to the metre, defined by fixing the speed of light in vacuum at 299 792 458 m/s. Imperial lengths derive from the 1959 international yard (0.9144 m exactly).

Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)

Bureau International des Poids et Mesures · Reviewed 2026-07-01

Standards and context behind Inch to Centimeter

International Yard and Pound Agreement (1959): Fixed the inch at exactly 25.4 mm across the US, UK, Canada, Australia, New Zealand and South Africa, ending the older, slightly longer US survey inch.
BIPM / SI metre: The centimetre is one hundredth of the SI metre, defined by the speed of light in vacuum (299,792,458 m/s).
US survey inch: Retired for most purposes on 1 January 2023 by NIST; it differed from the international inch by about 2 parts per million, which matters only over survey-scale distances.

How to Convert Inch to Centimeter

To convert from Inch (in) to Centimeter (cm), multiply the value by 2.54.

Formula: cm = in × 2.54

Reverse: in = cm × 0.3937007874

Step-by-Step Example

Start with your value in Inch. For example: 5 in
Multiply by the conversion factor: 5 x 2.54
The result is: 12.7 cm

About Inch

The inch is an imperial unit equal to 1/12 of a foot or 2.54 centimeters. It is widely used in the US and UK for small measurements.

Fun Fact: The inch was historically defined as the width of a man's thumb.

Common uses: screen sizes, construction, clothing.

About Centimeter

The centimeter equals one hundredth of a meter. It is commonly used for everyday measurements of length.

Common uses: body measurements, clothing, furniture.

Frequently Asked Questions

What is 5 Inch in Centimeter?

5 Inch equals 12.7 Centimeter.

How many Centimeter are in 1 Inch?

There are exactly 2.54 Centimeter in 1 Inch. This means the conversion factor from Inch to Centimeter is 2.54.

What is the formula to convert Inch to Centimeter?

The formula to convert Inch to Centimeter is: cm = in × 2.54. For example, to convert 10 Inch to Centimeter, you would multiply 10 by 2.54.

What is a Inch?