z - Red Shift. 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 red shift (Astronomical). To switch the unit simply find the one you want on the page and click it.
You can also go to the universal conversion page.
2Enter the value you want to convert (red shift). Then click the Convert Me button.
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Conversion settings explained

First of all, you don't have to change any settings to use the converter. It's absolutely optional.

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

Choose how you want to have your digit groups separated in long numbers:

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

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  • Significant figures:
  • Digit groups separator:
Your value (red shift, z):
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Metric

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

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

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

red shift to ri (里)
red shift to cho (町)
red shift to jo (丈)
red shift to hiro (尋)
red shift to ken (間)
red shift to shaku (尺)
red shift to sun (寸)
red shift to bu (分)
red shift to rin (厘)
red shift 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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» hide »

Chinese units of 1930

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

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

Hong Kong units

red shift to cek (尺)
red shift to tsun (寸)
red shift 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.
red shift to yot (โยชน์, league)
red shift to sen (เส้น, rope)
red shift to wa (วา, fathom)
red shift to sok (ศอก, cubit)
red shift to khuep (คืบ, span)
red shift to nio (นิ้ว, finger)
red shift 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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» hide »

Optical

red shift to dioptre (diopter)
Units: dioptre (diopter)
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» hide »

Geographical (German)

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

red shift to pica
red shift to pica [PostScript]
red shift to point (pt)
red shift to point [PostScript] (pt)
red shift to pixel (px)
red shift to twip
Units: pica  / pica [PostScript]  / point (pt)  / point [PostScript] (pt)  / pixel (px)  / twip
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» hide »

Typographical (Europe - Didot system)

red shift to cicero
red shift to point (pt)
Units: cicero  / point (pt)
» show »
» hide »

European footwear unit

red shift to Paris point
Units: Paris point
» show »
» hide »

Astronomical

red shift to parsec (pc)
red shift to light year
red shift to astronomical unit (au)
red shift to light minute
red shift to light second
Units:  / parsec (pc)  / light year  / astronomical unit (au)  / light minute  / light second
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» hide »

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.
red shift to light microsecond
red shift to light nanosecond
red shift to light picosecond
Units: light microsecond  / light nanosecond  / light picosecond
» show »
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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.
red shift to Planck length (L)
Units: Planck length (L)

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