SwapUnits

    Convert

    km²in²

    Square Kilometer
    km²
    Square Inch
    1.55×10^9
    in²
    Rounded result (4 decimals max)

    Formula

    1 km² = 1.55×10^9 in²

    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

    Results update as you type. Swap the direction to convert back from in² to km².

    km² to in² 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 Kilometer (km²)Square Inch (in²)
    0.25 km²387,500,775.0016 in²
    0.5 km²775,001,550.0031 in²
    1 km²1.55×10^9 in²
    2 km²3.10001×10^9 in²
    5 km²7.75002×10^9 in²
    10 km²1.55×10^10 in²
    25 km²3.87501×10^10 in²
    100 km²1.55×10^11 in²

    in² back to km²

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

    Square Inch (in²)Square Kilometer (km²)
    0.25 in²1.6129×10^-10 km²
    0.5 in²3.2258×10^-10 km²
    1 in²6.4516×10^-10 km²
    2 in²1.29032×10^-9 km²
    5 in²3.2258×10^-9 km²
    10 in²6.4516×10^-9 km²
    25 in²1.6129×10^-8 km²
    100 in²6.4516×10^-8 km²

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