Length converter: meter → millimeter
Facts about the Meter
The meter (m) is the base unit of length in the International System of Units (SI). Originally defined in the late 18th century as one ten-millionth of the distance from the equator to the North Pole, it has since been redefined using the speed of light. Today, 1 meter is exactly the distance light travels in 1/299,792,458 of a second. Meters are used globally in science, construction, athletics, and daily measurements.
Facts about the Millimeter
The millimeter (mm) is one-thousandth of a meter and is commonly used in fields that require precision, such as engineering, machining, and medicine. It is also widely used in tools like rulers, micrometers, and mechanical part specifications. Millimeters are ideal for measuring thickness, gaps, and tolerances.