TvSize.app

Inches to cm converter

One inch is exactly 2.54 centimeters. Enter a value – the converter works in both directions, and the chart below lists every value from 1 to 100 inches.

1 in = 2.54 cm

For TVs, the size is the diagonal

The inch size of a TV or monitor is the screen diagonal. A 55-inch TV has a 139.7 cm diagonal – but the picture is only 121.8 cm wide and 68.5 cm tall. Our chart lists width and height for every size.

TV sizes with width and height →

Inches to cm chart

Common values from 1 to 100 inches – exact, since 1 inch is exactly 2.54 cm.

InchesCentimeters
1″2.54 cm
2″5.08 cm
3″7.62 cm
4″10.16 cm
5″12.7 cm
6″15.24 cm
7″17.78 cm
8″20.32 cm
9″22.86 cm
10″25.4 cm
11″27.94 cm
12″30.48 cm
13″33.02 cm
14″35.56 cm
15″38.1 cm
16″40.64 cm
17″43.18 cm
18″45.72 cm
19″48.26 cm
20″50.8 cm
21″53.34 cm
22″55.88 cm
23″58.42 cm
24″60.96 cm
25″63.5 cm
26″66.04 cm
27″68.58 cm
28″71.12 cm
29″73.66 cm
30″76.2 cm
32″81.28 cm
34″86.36 cm
38″96.52 cm
40″101.6 cm
42″106.68 cm
43″109.22 cm
45″114.3 cm
48″121.92 cm
49″124.46 cm
50″127 cm
55″139.7 cm
58″147.32 cm
60″152.4 cm
65″165.1 cm
70″177.8 cm
75″190.5 cm
77″195.58 cm
80″203.2 cm
83″210.82 cm
85″215.9 cm
86″218.44 cm
90″228.6 cm
98″248.92 cm
100″254 cm

Inches and centimeters FAQ

How many cm is 1 inch?

One inch is exactly 2.54 centimeters. This conversion has been fixed internationally since 1959.

How do I convert inches to cm?

Multiply the number of inches by 2.54. Example: 24 inches × 2.54 = 60.96 cm. To go the other way, divide centimeters by 2.54.

How many cm is a 55-inch TV?

A 55-inch TV has a 139.7 cm diagonal. That makes it about 121.8 cm wide and 68.5 cm tall (without bezel).