Shackle. Conversion Chart

This converter features contemporary units of length. There is also a special converter for historical units of length you might want to visit for ancient, medieval and other old units that are no longer used.
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1This is a conversion chart for shackle (British Imperial Measure before 1963). To switch the unit simply find the one you want on the page and click it.
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2Enter the value you want to convert (shackle). Then click the Convert Me button.
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Do you want rounded off figures or scientifically precise ones? For everyday conversions we recommend choosing 3 or 4 significant digits. If you want maximum precision, set the number to 9

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Your value (shackle):
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shackle to kilometer (km)
shackle to meter (m)
shackle to decimeter (dm)
shackle to centimeter (cm)
shackle to millimeter (mm)
shackle to micrometre (micron)
shackle to nanometer (nm)
shackle to ångström
Units: kilometer (km)  / meter (m)  / decimeter (dm)  / centimeter (cm)  / millimeter (mm)  / micrometre (micron)  / nanometer (nm)  / ångström
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The American System (US Customary Units) and British Imperial Measures

American weights and measures are based on units used in Britain prior to 1826, when imperial system was officially established. Until 1960-1963 American and British units of length were different in 2 parts per million. In the middle of 20th century it started causing problems and the governments of the two countries agreed to refine the measures to exactly match. Since then Great Britain and the United States were using the same measures of length. In the U.S. the old standard of foot was retained with the name US survey foot.

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.

shackle to league
shackle to mile (mi)
shackle to land
shackle to furlong
shackle to bolt
shackle to chain
shackle to pole
shackle to rod (rd)
shackle to perch
shackle to yard (yd)
shackle to feet and inches (x'y")
shackle to span
shackle to hand
shackle to inch (in)
shackle to line
shackle to mil
shackle to microinch
Units: league  / mile (mi)  / land  / furlong  / bolt  / chain  / pole  / rod (rd)  / perch  / yard (yd)  / foot (ft)  / feet and inches (x'y")  / span  / hand  / inch (in)  / line  / mil  / microinch
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British Imperial Measure before 1963

The first English official measurement standards were defined in 15th century. British system of units, known as imperial units, was established in 1824. The British Weights and Meausurements Act of 1824 repealed all existing British measures legislation and redefined existing units. The 1963 Weights and Measures Act standartized the international measures.
shackle to league
shackle to mile (mi)
shackle to land
shackle to skein
shackle to bolt
shackle to furlong
shackle to chain
shackle to rope
shackle to pole
shackle to goad
shackle to ell
shackle to yard (yd)
shackle to pace
shackle to cubit (cu)
shackle to foot (ft)
shackle to span (sp)
shackle to nail
shackle to shaftment
shackle to hand (hd)
shackle to palm (plm)
shackle to inch (in)
shackle to finger
shackle to digit
shackle to barleycorn
shackle to poppyseed
shackle to line
shackle to button
shackle to caliber
shackle to thou (th)
shackle to mil
Units: league  / mile (mi)  / land  / skein  / bolt  /  / 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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US Surveyors' Measure

shackle to furlong
shackle to Ramsden's (engineers') chain (ch)
shackle to Gunter's (surveyors') chain (ch)
shackle to Gurley's chain (ch)
shackle to Gunter's (surveyors') pole
shackle to Gunter's (surveyors') yard
shackle to Gunter's (surveyors') foot (ft)
Units: furlong  / Ramsden's (engineers') chain (ch)  / Gunter's (surveyors') chain (ch)  / Gurley's chain (ch)  / Gunter's (surveyors') pole  / Gunter's (surveyors') yard  / Ramsden's (engineers') link  / Gunter's (surveyors') link  / Gurley's link  / Gunter's (surveyors') foot (ft)
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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.
shackle to nautical league (naut.leag)
shackle to nautical mile (naut.mi)
shackle to cable length (cbl)
shackle to fathom (fath)
Units: 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.
shackle to US nautical mile
shackle to US fathom (fath)
Units: US nautical mile  / US cable length  / US fathom (fath)
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British (Imperial) Nautical Measure

These measures were abandoned in favor of the international nautical measures in 1970.
shackle to Admiralty mile
shackle to Admiralty cable length
Units: Admiralty mile  / Admiralty cable length
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Spanish Customary Units Still In Use Today

These units are still actively used in some countries of Latin America. Their values vary from country to country. You can find more old Spanish customary units on our historical lengths page.
shackle to cuadra of Argentina
shackle to cuadra of Bolivia
shackle to cuadra of Chile
shackle to cuadra of Colombia
shackle to cuadra of Ecuador
shackle to cuadra of Nicaragua
shackle to cuadra of Paraguay
shackle to cuadra of Uruguay
shackle to vara of Argentina
shackle to vara of Brazil
shackle to vara of Chile
shackle to vara of Colombia
shackle to vara of Costa Rica
shackle to vara of Cuba
shackle to vara of Dominican Republic
shackle to vara of Ecuador
shackle to vara of El Salvador
shackle to vara of Guatemala
shackle to vara of Honduras
shackle to vara of Mexico
shackle to vara of Nicaragua
shackle to vara of Panama
shackle to vara of Paraguay
shackle to vara of Peru (peruana)
shackle to vara of Peru (española)
shackle to vara of Uruguay
shackle to vara of São Tomé and Principe
shackle to vara of Venezuela
Units: cuadra of Argentina  / cuadra of Bolivia  / cuadra of Chile  / cuadra of Colombia  / cuadra of Ecuador  / cuadra of Nicaragua  / cuadra of Paraguay  / cuadra of Uruguay  / vara of Argentina  / vara of Brazil  / vara of Chile  / vara of Colombia  / vara of Costa Rica  / vara of Cuba  / vara of Dominican Republic  / vara of Ecuador  / vara of El Salvador  / vara of Guatemala  / vara of Honduras  / vara of Mexico  / vara of Nicaragua  / vara of Panama  / vara of Paraguay  / vara of Peru (peruana)  / vara of Peru (española)  / vara of Uruguay  / vara of São Tomé and Principe  / vara of Venezuela
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shackle to ri (里)
shackle to cho (町)
shackle to jo (丈)
shackle to hiro (尋)
shackle to ken (間)
shackle to shaku (尺)
shackle to sun (寸)
shackle to bu (分)
shackle to rin (厘)
shackle to mo (毛, 毫)
Units: ri (里)  / cho (町)  / jo (丈)  / hiro (尋)  / ken (間)  / shaku (尺)  / sun (寸)  / bu (分)  / rin (厘)  / mo (毛, 毫)
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Chinese units of 1930

shackle to li (市里)
shackle to yin (引)
shackle to zhang (市丈)
shackle to chi (市尺)
shackle to cun (市寸)
shackle to fen (市分)
shackle to li (釐 or 厘)
shackle to hao (毫)
shackle to si (丝)
shackle to hu (忽)
Units: li (市里)  / yin (引)  / zhang (市丈)  / chi (市尺)  / cun (市寸)  / fen (市分)  / li (釐 or 厘)  / hao (毫)  / si (丝)  / hu (忽)
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Chinese units of 1915

shackle to li (里)
shackle to yin (引)
shackle to zhang (丈)
shackle to bu (步)
shackle to chi (尺)
shackle to cun (寸)
shackle to fen (分)
shackle to li (釐 or 厘)
shackle to hao (毫)
shackle to si (丝)
shackle to hu (忽)
Units: li (里)  / yin (引)  / zhang (丈)  / bu (步)  / chi (尺)  / cun (寸)  / fen (分)  / li (釐 or 厘)  / hao (毫)  / si (丝)  / hu (忽)
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Hong Kong units

shackle to cek (尺)
shackle to tsun (寸)
shackle to fan (分)
Units: cek (尺)  / tsun (寸)  / fan (分)
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Thai units

Some of these units are still in use even though metric system was formally established in 1923. Before the metrication the old units were standartied to exact metric values.
shackle to yot (โยชน์, league)
shackle to sen (เส้น, rope)
shackle to wa (วา, fathom)
shackle to sok (ศอก, cubit)
shackle to khuep (คืบ, span)
shackle to nio (นิ้ว, finger)
shackle to krabiat (กระเบียด, quarter of a finger)
Units: yot (โยชน์, league)  / sen (เส้น, rope)  / wa (วา, fathom)  / sok (ศอก, cubit)  / khuep (คืบ, span)  / nio (นิ้ว, finger)  / krabiat (กระเบียด, quarter of a finger)
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shackle to dioptre (diopter)
Units: dioptre (diopter)
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Geographical (German)

shackle to geographical mile
Units: 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.
shackle to rack unit (U)
shackle to horizontal pitch (HP)
Units: rack unit (U)  / horizontal pitch (HP)
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Typographical (British and U.S. - ATA system)

shackle to pica
shackle to pica [PostScript]
shackle to point (pt)
shackle to point [PostScript] (pt)
shackle to pixel (px)
shackle to twip
Units: pica  / pica [PostScript]  / point (pt)  / point [PostScript] (pt)  / pixel (px)  / twip
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Typographical (Europe - Didot system)

shackle to cicero
shackle to point (pt)
Units: cicero  / point (pt)
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European footwear unit

shackle to Paris point
Units: Paris point
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shackle to red shift (z)
shackle to parsec (pc)
shackle to light year
shackle to astronomical unit (au)
shackle to light minute
shackle to light second
Units: red shift (z)  / parsec (pc)  / light year  / astronomical unit (au)  / light minute  / light second
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Grace Hopper's units of distance

Grace Hopper is famous for her nanoseconds visual aid. People used to ask her why satellite communication took so long. She started handing out pieces of wire that were just under one foot long (11.80 inches) — the distance that light travels in one nanosecond. She also passed out packets of pepper, calling the individual grains of ground pepper picoseconds. She also used these aids to illustrate why computers had to be small to be fast.
shackle to light microsecond
shackle to light nanosecond
shackle to light picosecond
Units: light microsecond  / light nanosecond  / light picosecond
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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.
shackle to Planck length (L)
Units: Planck length (L)

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