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    Convert Centimeters to Inches

    1 centimeter (cm) equals 0.3937007874 inches (in).

    cm
    Swap: convert inches to centimeters
    in

    1 cm = 0.3937007874 in

    Type in either box. Scientific notation works: 1.5e-3.

    Converting a list? Use the bulk centimeter to inch converter to paste a column from Excel.

    How to Convert Centimeter to Inch

    • 1 cm = 0.3937007874 in
    • 1 in = 2.54 cm
    • Example: convert 15 cm to in: 15 cm = 15 × 0.3937007874 in = 5.905511811 in

    Reference conditions. in: The international yard and pound agreement (1959) fixed 1 yard = 0.9144 m exactly, so the inch, foot and mile are exact.

    Formula

    in = cm × 0.3937007874016

    or in = cm ÷ 2.54

    Derivation from SI units:

    • 1 cm = 10⁻² m
    • 1 in = 2.54 cm = 0.0254 m (exact)
    • 1 cm = 0.01 m ÷ 0.0254 m per in = 0.3937007874016 in

    Both units are defined exactly, so the factor is exact. Centimeter definition: centimeter; Inch definition: inch.

    Worked examples

    1. A 30 cm ruler is 11.81102362 in long.
      30 cm × 0.3937007874 = 11.81102362 in
    2. A height of 170 cm is 66.92913386 in.
      170 cm × 0.3937007874 = 66.92913386 in

    Centimeter to Inch conversion table

    Centimeter to Inch conversion table
    Centimeters (cm)Inches (in)
    1 cm0.3937007874 in
    2 cm0.7874015748 in
    2.54 cm1 in
    5 cm1.968503937 in
    10 cm3.937007874 in
    15 cm5.905511811 in
    20 cm7.874015748 in
    25 cm9.842519685 in
    30 cm11.81102362 in
    45 cm17.71653543 in
    50 cm19.68503937 in
    60 cm23.62204724 in
    75 cm29.52755906 in
    90 cm35.43307087 in
    100 cm39.37007874 in
    120 cm47.24409449 in
    150 cm59.05511811 in
    160 cm62.99212598 in
    165 cm64.96062992 in
    170 cm66.92913386 in
    175 cm68.8976378 in
    180 cm70.86614173 in
    185 cm72.83464567 in
    190 cm74.80314961 in
    200 cm78.74015748 in

    Where it's used

    Clothing sizes, screens, furniture and body measurements are given in centimetres in metric countries and in inches in the US. Because 1 inch is defined as exactly 2.54 cm, the conversion is exact.

    Centimeter to other length units

    1 cm expressed in every length unit
    Conversion1 cm equals
    centimeter to meter 0.01 m
    centimeter to kilometer 0.00001 km
    centimeter to millimeter 10 mm
    centimeter to micrometer 10000 µm
    centimeter to nanometer 10000000 nm
    centimeter to angstrom 100000000 Å
    centimeter to mile 0.000006213711922 mi
    centimeter to yard 0.01093613298 yd
    centimeter to foot 0.03280839895 ft
    centimeter to inch 0.3937007874 in
    centimeter to mil 393.7007874 mil
    centimeter to nautical mile 0.000005399568035 nmi

    Frequently asked questions

    How many inches is 1 cm?

    1 cm = 0.3937007874 in, so 10 cm ≈ 3.94 in.

    How many inches are in 1 centimeter?

    1 cm = 0.3937007874 in.

    How do I convert centimeters to inches?

    Multiply the value in cm by 0.3937007874, or divide it by 2.54. For example, 15 cm × 0.3937007874 = 5.905511811 in.

    Is the cm to in conversion exact?

    Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).

    Sources

    Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.

    Cite this page

    APA

    Scientific Converters. (2026, October 15). Convert Centimeters to Inches. Retrieved October 17, 2026, from https://scientificconverters.com/length/centimeters-to-inches/

    IEEE

    Scientific Converters, "Convert Centimeters to Inches," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/length/centimeters-to-inches/