Length unit conversion

Conversion result
Unit description:
  • International Units:
  • Millimeter (mm) - 1/1000 meter
  • Centimeter (cm) - 1/100 meter
  • decimeter (dm) - 1/10 meter
  • meter (m) - International Standard Unit
  • kilometer (km) - 1000 meters
  • Micrometer (μm) - 1/1,000,000 meter
  • Nanometer (nm) - 1/1,000,000,000 meter
  • Pimes (pm) - 1/1,000,000,000,000 meters
  • Imperial units:
  • Inches (in) - 0.0254 meters
  • feet (ft) - 12 inches
  • yards (yd) - 3 feet
  • Miles (mi) - 1760 yards
  • nautical miles (nmi) - 1852 meters
  • Astronomical units:
  • Light-year (ly) - The distance light travels in a vacuum in one year.
  • Astronomical Unit (AU) - The average distance from the Earth to the Sun
  • Parsec (pc) - approximately 3.26 light-years

Overview

Length unit conversion is a method of length conversion. A length unit is a basic unit for measuring spatial distance; it is a basic unit of measurement established by humans to standardize length.

Commonly used units include millimeter (mm), centimeter (cm), decimeter (dm), kilometer (km), meter (m), micrometer (μm), nanometer (nm), etc.

International standard unit of length

In the International System of Units (SI), the standard unit of length is the meter, denoted by the symbol "m". These units of length all belong to the metric system.

Imperial units of length

A few European and American countries, mainly the United Kingdom and the United States, use the imperial system of units, so they use different units of length, mainly miles, yards, feet, and inches.

Mile (mile) 1 mile = 1760 yards = 5280 feet = 1.609344 kilometers
yard (yd) 1 yard = 3 feet = 0.9144 meters
English fathom (f, fat, Fa, ftm) 1 fathom = 2 yards = 1.8288 meters
A wave (furlong) is 1 wave = 220 yards = 201.17 meters.
1 foot (ft, plural of feet) = 12 inches = 30.48 centimeters
Inch (inch, in) 1 inch = 2.54 centimeters

Astronomical unit of length

In astronomy, the "light-year" is often used as a unit of length. It is the distance that light travels in a vacuum in one year, and is therefore called a light-year.

1 light-year = 9.4653 × 10^12 km
1 parsec = 3.2616 light-years
1 astronomical unit ≈ 149.6 million kilometers

Other units of length include

The following are common unit types of meters: petameter (Pm), megameter (Mm), kilometer (km), decimeter (dm), centimeter (cm), millimeter (mm), filamenti (dmm), centimeter (cmm), micrometer (μm), nanometer (nm), picometer (pm), femtometer (fm), attometer (am), etc. Their conversion relationships to meters are as follows:

1 PM (palm) = 1 × 10^15 m
1 Gm (Jimmy/Kyoto Mitsubishi) = 1 × 10^9 m
1 Mm (megameter) = 1 × 10^6 m
1km (kilometer) = 1 × 10^3m
1 dm (decimeter) = 1 × 10^(-1) m
1 cm = 1 × 10^(-2) m
1 mm = 1 × 10^(-3) m
1 dmm (micrometer) = 1 × 10^(-4) m
1 cmm (hú m) = 1 × 10^(-5) m
1 μm (micrometer) = 1 × 10^(-6) m
1 nm (nanometer) = 1 × 10^(-9) m
1 pm (picometer) = 1 × 10^(-12) m
1fm (femtometer) = 1 × 10^(-15)m
1am (Am) = 1 × 10^(-18)m