It depends on what type you're talking about. The universal system of measurement is the metric system, which includes a meter, kilometer and millimeter. Seawise, distance is measured in nautical miles, which is 1,852 meters, and spacewise, there are astromonical units, which are about 149,597,870.7 kilometers long. Hope this helps.
distance
The meter, the SI unit for distance.
The answer depends on the scale but the SI unit is a metre.
Angstroms
light years
mainly meters are being used : symbol (m)
The standard measure for distance is the METRE
The unit that measures the greatest distance is a light-year, which represents the distance that light travels in one year. This unit is frequently used in astronomy to measure vast distances between celestial objects.
Kilometers are a unit of length, used to measure distance.
Distance is measured metrically in meters
meter
Metre