Multiple choice One micron is equal to 10-6m 10-5m 10-4m 10-3m Reveal answer Fill a bubble to check yourself A Correct answer Explanation One micron (micrometer) equals one millionth of a meter, or 10^-6 meters. The prefix 'micro-' in the metric system denotes 10^-6, just as 'milli-' denotes 10^-3 and 'nano-' denotes 10^-9.