It depends on what you want to measure. A unit that is suitable for the distance between subatomic particles will be of little use in measuring intergalactic distances (and conversely).
meter
Measuring length, width, height, and distance are all forms of what measurement?
Lightyears
Length, width, and height are forms of linear measurement, while distance is also a form of linear measurement but refers to the space between two points. Together, they help describe the physical dimensions or placement of objects in space.
mainly meters are being used : symbol (m)
Length. Distance.
distance/length
length / distance
Length or distance.
Length is the measurement of distance between two points.
meter
Strictly speaking, the length of something is the distance between the two end points of it.
Line measurement.
Measuring length, width, height, and distance are all forms of what measurement?
300 feet ( ft ) is a measurement of length or distance not a measurement of weight
Metric
Lightyears