Centimetres to Inches — cm to in

Enter a value to convert centimetres (cm) to inches (in). Works in your browser with no sign-up.

[ cm / in — Length ] instant · works offline
Centimetres · cm
0.3937008
Inches · in
1 cm = 0.3937008 in
Centimetres → Inches
⇄ Reverse: Inches → Centimetres
Formula

1 cm = 0.3937008 in

Multiply the number of centimetres by 0.3937008 (or divide by 2.54). For example, 10 cm × 0.3937008 = 3.937008 in.

Quick Reference — Centimetres to Inches
About Length Units

Most of the world measures distance in metres and kilometres, while the United States uses miles, feet and inches for everyday distances, and the UK still signs its roads in miles. Nautical miles (exactly 1,852 m) are used at sea and in aviation. The inch is defined as exactly 2.54 cm and the foot as exactly 0.3048 m, so these conversions are exact.

Related Conversions
in → cm All length units
All Length Conversions
→Feet to kilometres →Feet to metres →Inches to centimetres →Kilometres to miles →Metres to feet →Miles to kilometres →Miles to metres →Feet to centimetres →Kilometres to metres →Nautical miles to kilometres →Kilometres to feet →Metres to miles
FAQ — Centimetres to Inches

How do I convert centimetres to inches?

Multiply the number of centimetres by 0.3937008 (or divide by 2.54). For example, 10 cm × 0.3937008 = 3.937008 in.

How many inches are in one centimetre?

1 centimetre = 0.3937008 in (shown to up to 7 significant figures).

Is the conversion exact?

Yes for metric–imperial length: the international inch is exactly 2.54 cm, the foot exactly 0.3048 m and the mile exactly 1,609.344 m. Results are shown to 7 significant figures.

Does this converter work offline?

Yes. Once the page has loaded, conversions run entirely in your browser and nothing is sent to a server.