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One millimeter is equal to one million nanometers. This is the conversion relationship between the length units, because 1 meter = 100 centimeters, 1 centimeter = 10 millimeters, 1 millimeter = 1000 microns, 1 micron = 1000 nanometers, this topic is the relationship between the large unit of millimeters into nanometers, that is, 1 millimeter = 1 million nanometers, which is equal to the number of 1x10 to the sixth power of nanometers.