No. 12 of 19

Inches to centimeters

One inch is exactly 2.54 cm, by international agreement since 1959. Type any length in inches, decimals or fractions such as 3 5/8, and get centimeters and millimeters, plus a full chart below.

Result–
Millimeters–
Meters–

Key: / jumps to the first field

Results are for information only.

Inches to centimeters chart

Inches to centimeters chart 1
InchesCentimeters
1 in2.54 cm
2 in5.08 cm
3 in7.62 cm
4 in10.16 cm
5 in12.7 cm
6 in15.24 cm
7 in17.78 cm
8 in20.32 cm
9 in22.86 cm
10 in25.4 cm
11 in27.94 cm
12 in30.48 cm
Inches to centimeters chart 2
InchesCentimeters
13 in33.02 cm
14 in35.56 cm
15 in38.1 cm
16 in40.64 cm
17 in43.18 cm
18 in45.72 cm
19 in48.26 cm
20 in50.8 cm
21 in53.34 cm
22 in55.88 cm
23 in58.42 cm
24 in60.96 cm
Inches to centimeters chart 3
InchesCentimeters
25 in63.5 cm
26 in66.04 cm
27 in68.58 cm
28 in71.12 cm
29 in73.66 cm
30 in76.2 cm
31 in78.74 cm
32 in81.28 cm
33 in83.82 cm
34 in86.36 cm
35 in88.9 cm
36 in91.44 cm
Inches to centimeters chart 4
InchesCentimeters
37 in93.98 cm
38 in96.52 cm
39 in99.06 cm
40 in101.6 cm
41 in104.14 cm
42 in106.68 cm
43 in109.22 cm
44 in111.76 cm
45 in114.3 cm
46 in116.84 cm
47 in119.38 cm
48 in121.92 cm

Fractions of an inch

Fractions of an inch
InchesCentimetersMillimeters
1/16 in0.159 cm1.59 mm
1/8 in0.318 cm3.17 mm
3/16 in0.476 cm4.76 mm
1/4 in0.635 cm6.35 mm
5/16 in0.794 cm7.94 mm
3/8 in0.953 cm9.52 mm
7/16 in1.111 cm11.11 mm
1/2 in1.27 cm12.7 mm
9/16 in1.429 cm14.29 mm
5/8 in1.587 cm15.88 mm
11/16 in1.746 cm17.46 mm
3/4 in1.905 cm19.05 mm
13/16 in2.064 cm20.64 mm
7/8 in2.223 cm22.22 mm
15/16 in2.381 cm23.81 mm
1 in2.54 cm25.4 mm

Popular conversions

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How to use it

  1. Type the length in inches. You can use decimals (3.625) or a fraction (3 5/8).
  2. Read the result in centimeters and millimeters.
  3. Use the chart for common values, or open a single conversion for a worked example.

Frequently asked questions

How many cm is one inch?

Exactly 2.54 cm. The definition is fixed, so the conversion never changes.

How do I convert inches to cm by hand?

Multiply by 2.54. For example, 7 in × 2.54 = 17.78 cm.

How do I enter fractions?

Type the whole number, a space and the fraction: 2 3/4 for two and three-quarter inches.