in - Inch. Conversion Chart / Distance and Length Converter, The American System (US Customary Units) And British Imperial Measures

in - Inch. 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.

Conversion settings:

Significant figures: ? Do you want rounded off figures or
scientifically precise ones?
For everyday conversions we recommend
choosing 3 or 4 significant digits.
Digit groups separator: ?
Choose how you want to have your
digit groups separated:
1234567.89 none
1 234 567.89 space
1,234,567.89 comma
1.234.567,89 point

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

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1	This is a conversion chart for inch (The American System (US Customary Units) and British Imperial Measures). 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.
2	Enter the value you want to convert (inch). Then click the Convert Me button. Your value gets instantly converted to all other units on the page.
3	Now find the unit you want and get the conversion result next to it. It's your answer.
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Your value (inch, in):

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Metric

inch to kilometer (km)
inch to meter (m)
inch to decimeter (dm)
inch to centimeter (cm)

inch to millimeter (mm)
inch to micrometre (micron)
inch to nanometer (nm)
inch 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.

inch to league
inch to mile (mi)
inch to land
inch to furlong
inch to bolt
inch to chain
inch to pole
inch to rod (rd)
inch to perch

inch to yard (yd)
inch to foot (ft)
inch to feet and inches (x'y")
inch to span
inch to hand
inch to line
inch to mil
inch 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 / / 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.

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

inch to furlong
inch to Ramsden's (engineers') chain (ch)
inch to Gunter's (surveyors') chain (ch)
inch to Gurley's chain (ch)
inch to Gunter's (surveyors') pole

inch to Gunter's (surveyors') yard
inch to Ramsden's (engineers') link
inch to Gunter's (surveyors') link
inch to Gurley's link
inch 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.

inch to nautical league (naut.leag)
inch to nautical mile (naut.mi)

inch to cable length (cbl)
inch 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.

inch to US nautical mile

inch to US cable length
inch 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.

inch to Admiralty mile

inch 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.

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

inch to ri (里)
inch to cho (町)
inch to jo (丈)
inch to hiro (尋)
inch to ken (間)

inch to shaku (尺)
inch to sun (寸)
inch to bu (分)
inch to rin (厘)
inch 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

inch to li (市里)
inch to yin (引)
inch to zhang (市丈)
inch to chi (市尺)
inch to cun (市寸)

inch to fen (市分)
inch to li (釐 or 厘)
inch to hao (毫)
inch to si (丝)
inch 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

inch to li (里)
inch to yin (引)
inch to zhang (丈)
inch to bu (步)
inch to chi (尺)

inch to cun (寸)
inch to fen (分)
inch to li (釐 or 厘)
inch to hao (毫)
inch to si (丝)
inch 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

inch to cek (尺)

inch to tsun (寸)
inch 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.

inch to yot (โยชน์, league)
inch to sen (เส้น, rope)
inch to wa (วา, fathom)

inch to sok (ศอก, cubit)
inch to khuep (คืบ, span)
inch to nio (นิ้ว, finger)
inch 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

inch to dioptre (diopter)

Units: dioptre (diopter)

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Geographical (German)

inch 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.

inch to rack unit (U)

inch to horizontal pitch (HP)

Units: rack unit (U) / horizontal pitch (HP)

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Typographical (British and U.S. - ATA system)

inch to pica
inch to pica [PostScript]
inch to point (pt)

inch to point [PostScript] (pt)
inch to pixel (px)
inch to twip

Units: pica / pica [PostScript] / point (pt) / point [PostScript] (pt) / pixel (px) / twip

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Typographical (Europe - Didot system)

inch to cicero

inch to point (pt)

Units: cicero / point (pt)

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European footwear unit

inch to Paris point

Units: Paris point

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Astronomical

inch to red shift (z)
inch to parsec (pc)
inch to light year

inch to astronomical unit (au)
inch to light minute
inch 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.

inch to light microsecond

inch to light nanosecond
inch 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.

inch to Planck length (L)

Units: Planck length (L)

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inch to foot (ft)
inch to span (sp)
inch to nail
inch to shaftment
inch to hand (hd)
inch to palm (plm)
inch to inch (in)
inch to finger
inch to digit
inch to barleycorn
inch to poppyseed
inch to line
inch to button
inch to caliber
inch to thou (th)
inch to mil

inch to cuadra of Argentina
inch to cuadra of Bolivia
inch to cuadra of Chile
inch to cuadra of Colombia
inch to cuadra of Ecuador
inch to cuadra of Nicaragua
inch to cuadra of Paraguay
inch to cuadra of Uruguay
inch to vara of Argentina
inch to vara of Brazil
inch to vara of Chile
inch to vara of Colombia
inch to vara of Costa Rica
inch to vara of Cuba

inch to vara of Dominican Republic
inch to vara of Ecuador
inch to vara of El Salvador
inch to vara of Guatemala
inch to vara of Honduras
inch to vara of Mexico
inch to vara of Nicaragua
inch to vara of Panama
inch to vara of Paraguay
inch to vara of Peru (peruana)
inch to vara of Peru (española)
inch to vara of Uruguay
inch to vara of São Tomé and Principe
inch to vara of Venezuela

in - Inch. Measurements Converter