Use this converter to turn centimeters into inches with exact SI factors. Ideal for height, product dimensions, and DIY measurements.
How Centimeter to Inch works
One inch equals exactly 2.54 centimeters. To convert centimeters to inches, divide the length in centimeters by 2.54. The converter applies that factor automatically and shows the scale relationship for the current pair.
Common Centimeter to Inch conversions
Centimeter
Inch
1 cm
0.393700787402 in
2.54 cm
1 in
5 cm
1.96850393701 in
10 cm
3.93700787402 in
30 cm
11.811023622 in
100 cm
39.3700787402 in
Common questions
How many inches are in 1 cm?
1 centimeter is about 0.3937 inches (exactly 1 ÷ 2.54).
Is the cm to inches factor exact?
Yes. By definition, 1 inch = 2.54 cm exactly in the modern SI relationship.