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What is the math equation to convert from mm to inches?

5 Answers

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  • Favorite Answer

    1 inch = 25.4mm

    therefore

    1 mm = (1/25.4) inch

    "Z" mm = (1/25.4) * Z inch

    Source(s): Basic Maths -- SJ
  • Jeff
    Lv 7
    1 decade ago

    Since 1 mm = 0.0393700787402 inches

    M mm = M x (0.0393700787402) inches

  • fizixx
    Lv 7
    1 decade ago

    There's a potentially easier way to remember this.

    If you just remember that ✜✜ 1" = 2.54 cm ✜✜ then you can get a LOT of other conversions.

    Just know that 1 cm = 10 mm, so 2.54 cm = 25.4 mm

    Then 1" = 25.4 mm

    ► 1 mm = (1/25.4)"

    That's it.

    Then multiply both sides by your mm value and you'll have your values in inches.

  • 1 decade ago

    1 millimeter = 0.0393700787 inches

  • 1 decade ago

    1 millimeter = 0.0393700787 in

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