Length unit ▲ The traditional length units in China are Li, Zhang, ruler, inch and so on.

1 Li = 150 sheets = 500m.

2 Li = 1 km (1000m)

1 ft = 10 ft,

1 foot = 10 inch.

1 sheet = 3.33m,

1 ft =3.33 decimeters,

1 inch =3.33 cm.

▲ In the international system of units, the standard unit of length is "meter", which is represented by the symbol "m".

▲ Other length units include: light year, meter (Pm), megameter (mm), kilometer (km), decimeter (dm), centimeter (cm), millimeter (Mm), silk rice (dmm), millet (cmm), micron (micron), nanometer (nm) and so on. Their conversion relationship with rice is as follows:

1 light year = 9.46PM (about, light year)

1 mm = 1× 10 meter (megameter)

1 km =1x10 3m (km)

1 decimeter = 1× 10 (- 1) meter (decimeter)

1 cm = 1x 10 (-2) meters (cm)

1 mm = 1× 10 (-3) meters (mm)

1DMM =1×10 (-4) meters (silk rice)

1 CMM = 1× 10 (-5) m (Mi Hu)

1μ m =/kloc-0 /×10 (-6) meters (microns)

1 nm = 1× 10 (-9) meter (nm)

1pm =1×10 (-12) meters (picometers)

1FM =1×10 (-15) meters (femtometers)

1am = 1× 10(- 18)m(Ami)

▲ In astronomy, "light year" is often used as the unit of length, which is the distance that light travels in a vacuum state for one year, so it is also called light year.

1 light year = 9.4653×1012km.

But it is customary to say that light years are units of distance.

▲ The conversion between lengths can be quickly converted on/tools _ leng.php.

1nm= 10ā (angstrom) =>1ā =1×10 (-10) m.