1 micrometre = 1000 nanometres
so
1000 micrometres = 1 million nanometres
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A micrometer is 1 millionth of a meter and a nanometer is 1 billionth. 1000 billionths is equivalent to 1 milionth, or 1 micrometer. That is because 1 billion is 1000 millions.
1000 nanometres = 1 micrometre so 50 nm = 50/1000 mcm = 0.05 micrometres. Simple!
1 angstrom = 0.1 nanometers
one thousand thousands is a million
One nanometre is equal to 0.000000001 metres. Therefore, 532 nanometres is equal to 0.000000001 x 532 = 0.000000532 metres.