Convert inch to centimetre
1 inch = 2.54 centimetres. Enter any value below for an exact conversion.
1 in =
2.54 cm
centimetres
Need the reverse? Convert centimetre to inch →
Formula
1 inch = 2.54 centimetres centimetre = inches × 2.54 inch = centimetres × 0.3937008
inch to centimetre conversion table
About converting inches to centimetres
Converting inches to centimetres comes up constantly when buying US-spec products in metric countries — TVs and monitors quoted in inches, tyre and wheel sizes, picture frames, and DIY measurements. One inch is defined as exactly 2.54 cm, so the conversion is precise rather than approximate.
Frequently asked questions
How many centimetres are in a inch?
One inch equals 2.54 centimetres. So 10 inches is 25.4 centimetres. Use the converter above for any value.
What is the formula to convert inches to centimetres?
1 inch = 2.54 centimetres centimetre = inches × 2.54 inch = centimetres × 0.3937008
Is the inch-to-centimetre conversion exact?
Yes. The conversion factor between inches and centimetres is defined exactly, so results are precise — only rounded for display.