Cicero. 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 cicero (Typographical (Europe - Didot system)). To switch the unit simply find the one you want on the page and click it.
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cicero to kilometer (km)
cicero to meter (m)
cicero to decimeter (dm)
cicero to centimeter (cm)
cicero to millimeter (mm)
cicero to micrometre (micron)
cicero to nanometer (nm)
cicero 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.

cicero to league
cicero to mile (mi)
cicero to land
cicero to furlong
cicero to bolt
cicero to chain
cicero to pole
cicero to rod (rd)
cicero to perch
cicero to yard (yd)
cicero to feet and inches (x'y")
cicero to span
cicero to hand
cicero to inch (in)
cicero to line
cicero to mil
cicero 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 The British Weights and Meausurements Act of 1824 repealed all existing British measures legislation and redefined existing units.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.
cicero to league
cicero to mile (mi)
cicero to land
cicero to skein
cicero to bolt
cicero to shackle
cicero to furlong
cicero to chain
cicero to rope
cicero to pole
cicero to goad
cicero to ell
cicero to yard (yd)
cicero to pace
cicero to cubit (cu)
cicero to foot (ft)
cicero to span (sp)
cicero to nail
cicero to shaftment
cicero to hand (hd)
cicero to palm (plm)
cicero to inch (in)
cicero to finger
cicero to digit
cicero to barleycorn
cicero to poppyseed
cicero to line
cicero to button
cicero to caliber
cicero to thou (th)
cicero 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

cicero to furlong
cicero to Ramsden's (engineers') chain (ch)
cicero to Gunter's (surveyors') chain (ch)
cicero to Gurley's chain (ch)
cicero to Gunter's (surveyors') pole
cicero to Gunter's (surveyors') yard
cicero 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.
cicero to nautical league (naut.leag)
cicero to nautical mile (naut.mi)
cicero to cable length (cbl)
cicero 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.
cicero to US nautical mile
cicero 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.
cicero to Admiralty mile
cicero 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.
cicero to cuadra of Argentina
cicero to cuadra of Bolivia
cicero to cuadra of Chile
cicero to cuadra of Colombia
cicero to cuadra of Ecuador
cicero to cuadra of Nicaragua
cicero to cuadra of Paraguay
cicero to cuadra of Uruguay
cicero to vara of Argentina
cicero to vara of Brazil
cicero to vara of Chile
cicero to vara of Colombia
cicero to vara of Costa Rica
cicero to vara of Cuba
cicero to vara of Dominican Republic
cicero to vara of Ecuador
cicero to vara of El Salvador
cicero to vara of Guatemala
cicero to vara of Honduras
cicero to vara of Mexico
cicero to vara of Nicaragua
cicero to vara of Panama
cicero to vara of Paraguay
cicero to vara of Peru (peruana)
cicero to vara of Peru (española)
cicero to vara of Uruguay
cicero to vara of São Tomé and Principe
cicero 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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cicero to ri (里)
cicero to cho (町)
cicero to jo (丈)
cicero to hiro (尋)
cicero to ken (間)
cicero to shaku (尺)
cicero to sun (寸)
cicero to bu (分)
cicero to rin (厘)
cicero 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

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

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

cicero to cek (尺)
cicero to tsun (寸)
cicero 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.
cicero to yot (โยชน์, league)
cicero to sen (เส้น, rope)
cicero to wa (วา, fathom)
cicero to sok (ศอก, cubit)
cicero to khuep (คืบ, span)
cicero to nio (นิ้ว, finger)
cicero 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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cicero to dioptre (diopter)
Units: dioptre (diopter)
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Geographical (German)

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

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

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

cicero to Paris point
Units: Paris point
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cicero to red shift (z)
cicero to parsec (pc)
cicero to light year
cicero to astronomical unit (au)
cicero to light minute
cicero 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.
cicero to light microsecond
cicero to light nanosecond
cicero 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.
cicero to Planck length (L)
Units: Planck length (L)

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