Kayser is a unit of inverse length.
Kelvin is the fundamental SI unit of thermodynamic temperature.
Kilogram is the fundamental SI unit of mass.
KilogramWeight is a unit of force.
Knot
(Units Package Symbol) Knot is a unit of speed.
Lambert is a unit of luminance (photometric brightness).
League is a unit of length.
Link
(Units Package Symbol) Link is a unit of length.
Lumen
(Units Package Symbol) Lumen is the derived SI unit of luminous flux.
Lux
(Units Package Symbol) Lux is the derived SI unit of illumination (illuminance).