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cm to Inches

Enter a length in centimetres to get it in inches, to the nearest 1/16 inch for a tape measure, and in feet and inches for heights.

30 cm in inches
11.811 in
To the nearest 1/16 inch
11 13/16 in
Feet and inches
0 ft 11.8 in
  • An inch is exactly 2.54 cm: 30 ÷ 2.54 = 11.811 in.

⇄ Inches to centimetres · Every unit: the unit converter

How to convert centimetres to inches

  1. Divide the centimetres by 2.54 to get inches.
  2. For a ruler, multiply the decimal part by 16 and round: that's the number of sixteenths.
  3. For feet and inches, take 12 inches out for each foot.

Worked example

A 45 cm shelf: 45 ÷ 2.54 = 17.72 in, about 17 11/16 in on a tape measure, or 1 ft 5.7 in.

cm to inches chart

Centimetres to inches, with the nearest 1/16 inch and feet and inches
cminNearest 1/16 inFeet and inches
1 cm0.39 in3/80 ft 0.4 in
2 cm0.79 in13/160 ft 0.8 in
2.54 cm1 in10 ft 1 in
3 cm1.18 in1 3/160 ft 1.2 in
5 cm1.97 in1 15/160 ft 2 in
10 cm3.94 in3 15/160 ft 3.9 in
15 cm5.91 in5 7/80 ft 5.9 in
20 cm7.87 in7 7/80 ft 7.9 in
25 cm9.84 in9 13/160 ft 9.8 in
30 cm11.81 in11 13/160 ft 11.8 in
40 cm15.75 in15 3/41 ft 3.7 in
50 cm19.69 in19 11/161 ft 7.7 in
60 cm23.62 in23 5/81 ft 11.6 in
75 cm29.53 in29 1/22 ft 5.5 in
90 cm35.43 in35 7/162 ft 11.4 in
100 cm39.37 in39 3/83 ft 3.4 in
150 cm59.06 in59 1/164 ft 11.1 in
155 cm61.02 in615 ft 1 in
160 cm62.99 in635 ft 3 in
165 cm64.96 in64 15/165 ft 5 in
170 cm66.93 in66 15/165 ft 6.9 in
175 cm68.9 in68 7/85 ft 8.9 in
180 cm70.87 in70 7/85 ft 10.9 in
185 cm72.83 in72 13/166 ft 0.8 in
190 cm74.8 in74 13/166 ft 2.8 in

The inch is exactly 2.54 cm by definition, so these conversions are exact to the decimals shown. Everything runs in your browser.

Frequently asked questions

How many inches are in a centimetre?

0.3937 inches. An inch is defined as exactly 2.54 cm, so 1 cm = 1 ÷ 2.54 in.

How do I convert cm to inches?

Divide by 2.54. 30 cm ÷ 2.54 = 11.81 in, which is 11 13/16 in to the nearest sixteenth on a ruler.

How do I convert my height in cm to feet and inches?

Divide by 2.54 for inches, then take out 12 inches for every foot. 170 cm is 66.93 in, or 5 ft 6.9 in; 160 cm is 5 ft 3 in and 180 cm is 5 ft 10.9 in.

What does 13/16 of an inch mean on a ruler?

Imperial rulers divide the inch into 16 parts. 13/16 is the thirteenth mark after the whole inch; 8/16 is the half-inch mark, written 1/2, and 4/16 is 1/4.

What is 2.54 cm in inches?

Exactly 1 inch, by definition since 1959. 25.4 mm is the same inch.

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