Inches to Centimeters (in to cm) Converter

Enter inches, as a whole number or a decimal such as 0.375 for 3/8, to get the exact length in centimeters.

1 inch = 2.54 cm exactly

From
To
2.54
Try:
Step-by-stepin โ†’ cm
11 in = 2.54 cmformula
21 ร— 2.54substitute
32.54 cmresult
URLiunitconverter.com/length/inches-to-centimeters?value=1Open
1 in in every unit
mm
Millimeter
1 mm = 0.1 cm
25.4 mm
cm
Centimeter
1 cm = 10 mm
2.54 cm
m
Meter
SI base unit
0.0254 m
km
Kilometer
1 km = 1,000 m
0.0000254 km
in
Inch
1 in = 2.54 cm exactly
1 in
ft
Foot
1 ft = 12 in
0.083333333 ft
yd
Yard
1 yd = 3 ft
0.027777778 yd
mi
Mile
1 mi = 5,280 ft
0.000015782828 mi

Inches to Centimeters Formula

centimeters = inches ร— 2.54

One inch is 2.54 centimeters, by definition, so the conversion is exact. For example, 12 in ร— 2.54 = 30.48 cm.

Converting Fractions of an Inch

To convert a fraction, divide the top number by the bottom number first, then multiply by 2.54. Because 2.54 is exact, these results are exact too.

FractionDecimal inchesCentimeters
1/16 in0.06250.15875 cm
1/8 in0.1250.3175 cm
1/4 in0.250.635 cm
3/8 in0.3750.9525 cm
1/2 in0.51.27 cm
5/8 in0.6251.5875 cm
3/4 in0.751.905 cm
7/8 in0.8752.2225 cm

Screen Sizes in Centimeters

Phones, laptops and TVs are sold by screen size in inches in almost every country. The number is the diagonal, corner to corner, not the width.

Advertised sizeDiagonal in cm
6.1โ€ณ15.5 cm
13.3โ€ณ33.8 cm
15.6โ€ณ39.6 cm
24โ€ณ61 cm
27โ€ณ68.6 cm
32โ€ณ81.3 cm
55โ€ณ139.7 cm
65โ€ณ165.1 cm

Inches to Centimeters Table

Inches (in)Centimeters (cm)
0.25 in0.635 cm
0.5 in1.27 cm
1 in2.54 cm
2 in5.08 cm
3 in7.62 cm
4 in10.16 cm
5 in12.7 cm
6 in15.24 cm
8 in20.32 cm
10 in25.4 cm
12 in30.48 cm
18 in45.72 cm
24 in60.96 cm
36 in91.44 cm
48 in121.92 cm
60 in152.4 cm

Common Questions

How many centimeters are in an inch?
Exactly 2.54 centimeters. The inch has been defined this way since 1959.
How many cm is 12 inches?
12 inches is 30.48 cm, which is one foot.
How do I convert 5/8 inch to cm?
Divide 5 by 8 to get 0.625 in, then multiply by 2.54: 0.625 ร— 2.54 = 1.5875 cm.
Is a 55-inch TV 55 inches wide?
No. 55 inches (139.7 cm) is the diagonal. A 16:9 screen of that size is about 47.9 in (121.8 cm) wide.