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    Convert

    mi² → km²

    Square Mile
    mi²
    Square Kilometer
    2.59
    km²
    Rounded result (4 decimals max)

    Formula

    1 mi² = 2.59 km²

    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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    mi² to km² 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 Mile (mi²)Square Kilometer (km²)
    0.25 mi²0.6475 km²
    0.5 mi²1.295 km²
    1 mi²2.59 km²
    2 mi²5.18 km²
    5 mi²12.9499 km²
    10 mi²25.8999 km²
    25 mi²64.7497 km²
    100 mi²258.9988 km²

    km² back to mi²

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

    Square Kilometer (km²)Square Mile (mi²)
    0.25 km²0.0965 mi²
    0.5 km²0.1931 mi²
    1 km²0.3861 mi²
    2 km²0.7722 mi²
    5 km²1.9305 mi²
    10 km²3.861 mi²
    25 km²9.6526 mi²
    100 km²38.6102 mi²

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