Light year, kilometre, metre, centimetre, millimetre, micrometre, nanometre.
And for the old fashioned, light year, mile, furlong, chain, yard, foot, inch, thou.
Both systems contain many other units that are used less often.
The base unit of distance is the metre.
meter
Km
meter (m)
kilometers - km, is a unit for distance, and can't be used to measure mass.
The unit of measurement typically used to measure the distance between buildings is feet or meters.
mainly meters are being used : symbol (m)
Miles
Metre.
in the united states feet & anywhere else meters
They are used to measure quantities that are not basic. Length, for example, is a basic unit, but area and volume are not so derived units will be used to measure area and volume.
Ancient Greek is the basic unit used to measure liquid. Ancient Greek can change location and epoch.
kilometers - km, is a unit for distance, and can't be used to measure mass.
Angstroms
light years
meter
Metre
Kilometers are a unit of length, used to measure distance.
grams
The unit of measurement typically used to measure the distance between buildings is feet or meters.
They are used to measure quantities that are not basic. Length, for example, is a basic unit, but area and volume are not so derived units will be used to measure area and volume.