Millimeter (mm) Conversion Calculator

A millimeter (mm) is the smallest commonly used unit in the metric system for measuring length. It equals one-thousandth (1/1000) of a meter. For reference, a millimeter is about:

• The thickness of a credit card (≈ 0.8 mm)
• The diameter of a paper clip wire (≈ 1 mm)
• The thickness of a dime (≈ 1.35 mm)

Quick reference for millimeter conversions:

• 1 millimeter = 0.0393701 inches
• 1 millimeter = 0.1 centimeters
• 1 millimeter = 0.001 meters