Inches to Centimetres — in to cm

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

[ in / cm — Length ] instant · works offline
Inches · in
2.54
Centimetres · cm
1 in = 2.54 cm
Inches → Centimetres
⇄ Reverse: Centimetres → Inches
Formula

1 in = 2.54 cm

Multiply the number of inches by 2.54. For example, 10 in × 2.54 = 25.4 cm.

Quick Reference — Inches to Centimetres
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
cm → in ft → cm All length units
All Length Conversions
→Centimetres to inches →Feet to kilometres →Feet to metres →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 — Inches to Centimetres

How do I convert inches to centimetres?

Multiply the number of inches by 2.54. For example, 10 in × 2.54 = 25.4 cm.

How many centimetres are in one inch?

1 inch = 2.54 cm (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.