1 Meter = 1 000 000 Micrometers
There are 1 000 000 (one million) micrometers in a meter because there are 10 decimeters in a meter, 10 centimeters in a decimeter, 10 millimeters in a centimeter and 1000 micrometers in a millimeter, that makes 10 * 10 * 10 * 1000 = 1 000 000 micrometers in a meter.
Meter (metre) is a metric system base length unit and defined as the length of the path travelled by light in vacuum during a time interval of 1/299,792,458 of a second. It equals to 3.280839895 feet or 39.3700787 inches. The abbreviation is "m".
Micrometer (micrometre) is a metric unit and used for precise measurement of small distances in engineering and machining. The abbreviation is "µm".