qcalculate

Inches to CM Converter

Change inches to centimetres, with the working shown. An inch is exactly 2.54 cm, so multiply by 2.54: the answer is always exact.

in to cm

30.48 cm

12 inches is 30.48 centimetres.

The same amount in other units

Show me how

All steps as text

    Tip: press ← and → to move between steps, or click any step.

    How to convert inches to cm

    Multiply the inches by 2.54. For 12 inches: 12 × 2.54 = 30.48 cm. Written as a fraction equal to 1: 12 in × (2.54 cm / 1 in), and the inches cancel.

    For feet and inches, change it all to inches first: 5 ft 9 in is 5 × 12 + 9 = 69 inches, and 69 × 2.54 = 175.26 cm.

    Inches to cm chart

    InchesCentimetres
    0.25 in0.635 cm
    0.5 in1.27 cm
    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
    15.6 in39.624 cm
    24 in60.96 cm
    27 in68.58 cm
    32 in81.28 cm
    36 in91.44 cm
    48 in121.92 cm
    55 in139.7 cm
    65 in165.1 cm

    All values are exact.

    Screen and TV sizes

    Screens are measured across the diagonal in inches. A 15.6-inch laptop screen is 15.6 × 2.54 = 39.624 cm corner to corner, and a 55-inch TV is 139.7 cm.

    Questions

    How many cm is 1 inch?

    Exactly 2.54 cm.

    How many cm is 5 feet?

    152.4 cm: 5 feet is 60 inches, and 60 × 2.54 = 152.4.

    How do I convert cm back to inches?

    Divide by 2.54. The cm to inches converter shows the steps.