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    Convert

    in² → cm²

    Square Inch
    in²
    Square Centimeter
    6.4516
    cm²
    Rounded result (4 decimals max)

    Formula

    1 in² = 6.4516 cm²

    Conversion sourcesTap or click to view references

    • The International System of Units (SI) — NIST Special Publication 330

      National Institute of Standards and Technology (NIST). The SI Brochure (SP 330) is the definitive English edition of the BIPM SI tables. NIST’s edition lists the official constants and conversion factors tying inch-pound units to SI, which SwapUnits applies for length, mass, temperature, pressure, volume, and related conversions. See /standards/nist-si-tenfold for the complete decimal multiple/submultiple table. View source · View SI table

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    in² to cm² quick table

    Multiply any row by the same factor to scale results. Use the converter above to enter exact values with your own units.

    Square Inch (in²)Square Centimeter (cm²)
    0.25 in²1.6129 cm²
    0.5 in²3.2258 cm²
    1 in²6.4516 cm²
    2 in²12.9032 cm²
    5 in²32.258 cm²
    10 in²64.516 cm²
    25 in²161.29 cm²
    100 in²645.16 cm²

    cm² back to in²

    Keep the reciprocal handy when double-checking calculations or undoing a conversion.

    Square Centimeter (cm²)Square Inch (in²)
    0.25 cm²0.0388 in²
    0.5 cm²0.0775 in²
    1 cm²0.155 in²
    2 cm²0.31 in²
    5 cm²0.775 in²
    10 cm²1.55 in²
    25 cm²3.875 in²
    100 cm²15.5 in²

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