Centimeters to inches converter

1 cm = 0.3937008 in. To convert centimeters to inches, divide by 2.54 (or multiply by ≈ 0.3937008). Example: 10 cm = 3.937008 in.

Result (in)

in = cm ÷ 2.54 · Swap: Inches to centimeters

Open the full tool: Unit converter →

Centimeters to inches chart

CentimetersInches
1 cm0.393701 in
2 cm0.787402 in
3 cm1.1811 in
4 cm1.5748 in
5 cm1.9685 in
6 cm2.3622 in
7 cm2.75591 in
8 cm3.14961 in
9 cm3.54331 in
10 cm3.93701 in
12 cm4.72441 in
15 cm5.90551 in
20 cm7.87402 in
25 cm9.84252 in
30 cm11.811 in
40 cm15.748 in
50 cm19.685 in
60 cm23.622 in
75 cm29.5276 in
100 cm39.3701 in
200 cm78.7402 in
500 cm196.85 in
1000 cm393.701 in

How to convert centimeters to inches

Formula: in = cm ÷ 2.54. Worked example: 10 cm = 3.937008 in. Quick estimate: multiply by about 0.4 — the error is 1.6%, fine for everyday use but not for engineering or shopping by exact size.

About these units

Since 1959 the international inch is defined as exactly 25.4 mm, so 1 inch = 2.54 cm with no rounding. Inches are used for screen and TV diagonals, wheel and rim sizes, jeans waist sizes and many US/UK product dimensions.

Category: length. Results on this page are calculated in your browser and rounded to 7 significant digits; the table above uses 6. For other units of length open the full unit converter, or use the reverse page — inches to centimeters.

FAQ

How many inches are in one cm?

1 cm = 0.3937007874 in (rounded). Conversely, 1 in = 2.54 cm.

What is 100 cm in inches?

100 cm = 39.37008 in.

Is this converter accurate?

Yes — it uses the official definitions (1 cm = 0.01 m, 1 in = 0.0254 m) and shows results rounded to 7 significant digits.

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