L - Planck Length. 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 Planck length (Natural units). 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 (Planck length). Then click the Convert Me button.
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Number of significat figures

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

Digit groups separator

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1234567.89none
1 234 567.89space
1,234,567.89comma
1.234.567,89point

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  • Significant figures:
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Your value (Planck length, L):
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Metric

Planck length to kilometer (km)
Planck length to meter (m)
Planck length to decimeter (dm)
Planck length to centimeter (cm)
Planck length to millimeter (mm)
Planck length to micrometre (micron)
Planck length to nanometer (nm)
Planck length 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.

Planck length to league
Planck length to mile (mi)
Planck length to land
Planck length to furlong
Planck length to bolt
Planck length to chain
Planck length to pole
Planck length to rod (rd)
Planck length to perch
Planck length to yard (yd)
Planck length to feet and inches (x'y")
Planck length to span
Planck length to hand
Planck length to inch (in)
Planck length to line
Planck length to mil
Planck length 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.
Planck length to league
Planck length to mile (mi)
Planck length to land
Planck length to skein
Planck length to bolt
Planck length to shackle
Planck length to furlong
Planck length to chain
Planck length to rope
Planck length to pole
Planck length to goad
Planck length to ell
Planck length to yard (yd)
Planck length to pace
Planck length to cubit (cu)
Planck length to foot (ft)
Planck length to span (sp)
Planck length to nail
Planck length to shaftment
Planck length to hand (hd)
Planck length to palm (plm)
Planck length to inch (in)
Planck length to finger
Planck length to digit
Planck length to barleycorn
Planck length to poppyseed
Planck length to line
Planck length to button
Planck length to caliber
Planck length to thou (th)
Planck length to mil
Units: 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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US Surveyors' Measure

Planck length to furlong
Planck length to Ramsden's (engineers') chain (ch)
Planck length to Gunter's (surveyors') chain (ch)
Planck length to Gurley's chain (ch)
Planck length to Gunter's (surveyors') pole
Planck length to Gunter's (surveyors') yard
Planck length 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.
Planck length to nautical league (naut.leag)
Planck length to nautical mile (naut.mi)
Planck length to cable length (cbl)
Planck length 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.
Planck length to US nautical mile
Planck length 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.
Planck length to Admiralty mile
Planck length 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.
Planck length to cuadra of Argentina
Planck length to cuadra of Bolivia
Planck length to cuadra of Chile
Planck length to cuadra of Colombia
Planck length to cuadra of Ecuador
Planck length to cuadra of Nicaragua
Planck length to cuadra of Paraguay
Planck length to cuadra of Uruguay
Planck length to vara of Argentina
Planck length to vara of Brazil
Planck length to vara of Chile
Planck length to vara of Colombia
Planck length to vara of Costa Rica
Planck length to vara of Cuba
Planck length to vara of Dominican Republic
Planck length to vara of Ecuador
Planck length to vara of El Salvador
Planck length to vara of Guatemala
Planck length to vara of Honduras
Planck length to vara of Mexico
Planck length to vara of Nicaragua
Planck length to vara of Panama
Planck length to vara of Paraguay
Planck length to vara of Peru (peruana)
Planck length to vara of Peru (española)
Planck length to vara of Uruguay
Planck length to vara of São Tomé and Principe
Planck length 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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Japanese

Planck length to ri (里)
Planck length to cho (町)
Planck length to jo (丈)
Planck length to hiro (尋)
Planck length to ken (間)
Planck length to shaku (尺)
Planck length to sun (寸)
Planck length to bu (分)
Planck length to rin (厘)
Planck length 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

Planck length to li (市里)
Planck length to yin (引)
Planck length to zhang (市丈)
Planck length to chi (市尺)
Planck length to cun (市寸)
Planck length to fen (市分)
Planck length to li (釐 or 厘)
Planck length to hao (毫)
Planck length to si (丝)
Planck length 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

Planck length to li (里)
Planck length to yin (引)
Planck length to zhang (丈)
Planck length to bu (步)
Planck length to chi (尺)
Planck length to cun (寸)
Planck length to fen (分)
Planck length to li (釐 or 厘)
Planck length to hao (毫)
Planck length to si (丝)
Planck length 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

Planck length to cek (尺)
Planck length to tsun (寸)
Planck length 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.
Planck length to yot (โยชน์, league)
Planck length to sen (เส้น, rope)
Planck length to wa (วา, fathom)
Planck length to sok (ศอก, cubit)
Planck length to khuep (คืบ, span)
Planck length to nio (นิ้ว, finger)
Planck length 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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Optical

Planck length to dioptre (diopter)
Units: dioptre (diopter)
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Geographical (German)

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

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

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

Planck length to Paris point
Units: Paris point
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Astronomical

Planck length to red shift (z)
Planck length to parsec (pc)
Planck length to light year
Planck length to astronomical unit (au)
Planck length to light minute
Planck length 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.
Planck length to light microsecond
Planck length to light nanosecond
Planck length to light picosecond
Units: light microsecond  / light nanosecond  / light picosecond

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