Inches to CM Converter

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Convert inches to centimetres exactly (1 inch = 2.54 cm), for screen sizes, clothes and measurements.

From

1 in = 2.54 cm

1 in in every length unit
Unit	Value
Millimetre mm	25.4
Centimetre cm	2.54
Metre m	0.0254
Kilometre km	0.0000254
Inch in	1
Foot ft	0.08333333333
Yard yd	0.02777777778
Mile mi	0.00001578282828
Nautical mile nmi	0.00001371490281
Micrometre µm	25,400

How to use, limits & privacy

About Inches to CM Converter

Convert inches to centimetres exactly: cm = inches × 2.54, because the inch has been defined as exactly 2.54 cm since 1959. So 6 in = 15.24 cm, 12 in = 30.48 cm, 32 in = 81.28 cm and 55 in = 139.7 cm. The page opens with Inch in From and Centimetre in To. Inch values convert to a clean number of centimetres, and a table shows the same length in mm, metres and feet.

How to Use

Type the inches

Enter the number of inches in the From box, such as 32 for a waist size or 43 for a TV. Decimals like 5.5 work.

Read the centimetres

The To box shows the result straight away, for example 81.28 cm, and the line below repeats it in a sentence.

Check other units

The table lists the same length in millimetres, metres, feet and yards, with the current To unit highlighted.

Convert back or copy

Type in the To box to turn cm into inches, or press Swap units. Click Copy result to copy the number.

Privacy & Processing

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Rules & Limitations

Screen sizes are measured across the diagonal, so a 43 inch TV is 109.22 cm corner to corner, not wide.
Feet and inches cannot be typed together. Work out the total inches first (feet × 12 + inches), then convert.
Only plain numbers are accepted; leave out the inch sign (") and fractions such as 3/4 (type 0.75 instead).

Top Suggestions

Converting jeans and trouser waist sizes such as 30, 32 or 34 inches to cm
Working out a TV, monitor or phone screen size in cm
Reading tape measures and US product dimensions in centimetres
Converting photo print sizes such as 4 × 6 or 5 × 7 inches

Inches to CM Converter FAQ

How many cm is 1 inch?

Exactly 2.54 cm. This is the international definition, so every inch value converts to centimetres without rounding errors: 10 in is 25.4 cm and 100 in is 254 cm.

What is a 32 inch waist in cm?

32 in × 2.54 = 81.28 cm. For other sizes: 28 in is 71.12 cm, 30 in is 76.2 cm, 34 in is 86.36 cm and 36 in is 91.44 cm.

How big is a 43 inch or 55 inch TV in cm?

A 43 inch TV is 109.22 cm and a 55 inch TV is 139.7 cm, measured diagonally across the screen. The width is smaller than the diagonal: for a normal 16:9 screen it is about 87% of it.

How do I convert 5 feet 6 inches to cm?

Change it to inches first: 5 × 12 + 6 = 66 inches. Type 66 here and you get 167.64 cm. The tool has no box for feet and inches together.

How do I convert a 4 × 6 inch photo size to cm?

Convert each side: 4 in is 10.16 cm and 6 in is 15.24 cm, so a 4 × 6 print is 10.16 × 15.24 cm. A 5 × 7 print is 12.7 × 17.78 cm.