Light Year Conversion Chart

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1 This is a conversion chart for light year (Astronomical). To switch the unit simply find the one you want on the page and click it.
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2 Enter the value you want to convert (light year). Then click the Convert Me button.
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International Nautical Measure

The international nautical mile was defined by the First International Extraordinary Hydrographic Conference, Monaco in 1929. This is the only definition in widespread current use, and is the one accepted by the International Bureau of Weights and Measures. Before 1929 different countries had different definitions, and the Soviet Union, the United Kingdom and the United States did not immediately accept the international value.
nautical league (naut.leag)
nautical mile (naut.mi)
cable length (cbl)
fathom (fath)
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US Nautical Measure

These measures were abandoned in favor of the international nautical measures in 1954.
US nautical mile
US fathom (fath)
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British (Imperial) Nautical Measure

These measures were abandoned in favor of the international nautical measures in 1970.
Admiralty mile
Admiralty cable length
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Geographical (German)

geographical mile
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Computer Equipment

A rack unit, U or RU is a unit of measure that describes the height of equipment designed to mount in a 19-inch rack or a 23-inch rack. The 19-inch (482.6 mm) or 23-inch (584.2 mm) dimension refers to the width of the equipment mounting frame in the rack including the frame; the width of the equipment that can be mounted inside the rack is less.
rack unit (U)
horizontal pitch (HP)
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Typographical (British and U.S. - ATA system)

pica
pica [PostScript]
point (pt)
point [PostScript] (pt)
pixel (px)
twip
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Typographical (Europe - Didot system)

cicero
point (pt)
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Natural units

In physics, natural units are physical units of measurement based only on universal physical constants. The origin of their definition comes only from properties of nature and not from any human construct.
Planck length (L)
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The American System of Measures (US Customary Units)

American weight and measures are based on units used in Britain prior to 1824, when imperial system was officially established. The US law of 1866 set a relationship with the metric system by defining the meter as equal to 39.37 in. Since then all measures were redefined in terms of metric units with the last minimal adjustment in 1959. However the old standard of 1ft was retained with the name US survey foot.
league
mile (mi)
land
bolt
pole
rod (rd)
perch
yard (yd)
foot (ft)
span
hand
inch (in)
line
mil
microinch
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British (Imperial) Measure

The first English official measurement standards were defined in 15th century. British system of units, known as imperial units, was established in 1824. Later in 1963 the standards were redefined in terms of metre stantard maintained in Paris. From 1995 the UK adopted metric units for general use. The only imperial measures of length that can be officially used now are miles, yards, feet and inches for road traffic signs.
league
mile (mi)
land
skein
bolt
shackle
furlong
chain
rope
pole
goad
ell
yard (yd)
pace
cubit (cu)
foot (ft)
span (sp)
nail
shaftment
hand (hd)
palm (plm)
inch (in)
finger
digit
barleycorn
poppyseed
line
button
caliber
thou (th)
mil
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Japanese

mo
rin
bu
sun
shaku
ken
hiro
jo
cho
ri
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Chinese Imperial

li
yin
zhang
bu
chi
cun
fen
li (small)
hao
si
hu
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Old French

There were many local variations; the following are Quebec and Paris definitions
lieue commune
lieue marine
lieue de post
lieue metrique
arpent
perche
toise
pied [foot]
pouce [inch]
ligne
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Old Spanish and Portuguese

These units are now obsolete. The conversions below are given from Spain of 1801. Some of the units are still used in Latin America, but the value may differ in various places.
legua
paso
vara
pie
pulgada
linea
punto

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