Unit Converter: Length (metre, inch, yard, etc.)

Metric system

 angstrom Å nanometre nm micrometre μm millimetre mm centimetre cm metre m kilometre km

United States customary units / Imperial units

 inch in foot ft yard yd chain ch furlong fur mile mi

Japanese units of measurement

 sun 寸 shaku 尺 jō 丈 ken 間 chō 町 ri 里

Nautical

 nautical mile nm / M
* Round to the 14th decimal place.
* About the notation of "e": Numbers with many digits may be displayed as "1e9". This is a computer exponential notation, where “e” represents a power of 10.
1e3 = 103 = 1,000
1e6 = 106 = 1,000,000
1e9 = 109 = 1,000,000,000
1e-3 = 10-3 = 0.001
1e-6 = 10-6 = 0.000001
1e-9 = 10-9 = 0.000000001

Metric system

$1km = 10^3m$ $1m = 10^2cm = 10^3mm = 10^6μm = 10^9nm = 10^{10}\text{\AA}$

United States customary units / Imperial units

$1mile = 8furlong = 80chain = 1760yard$ $1yard = 3foot = 36inch$ $1inch = 25.4mm$

Japanese units of measurement

$1\text{里} = 36\text{町}$ $1\text{町} = 60\text{間} = 360\text{尺}$ $1\text{間} = 6\text{尺}$ $1\text{丈} = 10\text{尺}$ $1\text{尺} = 10\text{寸} = {\dfrac {10}{33}}m \approx 0.3030303m$

Nautical

$1nm = 1852m$