Millimeter Converter

Convert millimeters (mm) to centimeters, meters, inches, and other length units.

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The millimeter (mm) is a metric unit of length equal to one-thousandth of a meter, or one-tenth of a centimeter. Used in engineering, drafting, medicine, and manufacturing where high measurement precision is required.

Common Millimeter Conversions

  • 1 mm = 0.1 cm — ten millimeters equal one centimeter.
  • 1 mm = 0.001 m — one thousand millimeters equal one meter.
  • 1 mm ≈ 0.0394 in — multiply by 0.0394 to convert to inches.
  • 1 mm ≈ 0.00328 ft — multiply by 0.00328 to convert to feet.
  • 25.4 mm = 1 in — exact value by definition.

Millimeters are the standard for precision in technical documentation, medical diagnostics, and jewelry. In everyday life, centimeters are more commonly used.