Acre. Conversion Chart

This conversion page features historical units (ancient, medieval, etc.) that are mostly no longer in use. If you are looking for units of area that are used today, including many national units of various countries, please switch to our main area conversion page.
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1This is a conversion chart for acre (British (Imperial) And U.S. System). 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 (acre). Then click the Convert Me button.
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3Now find the unit you want and get the conversion result next to it. It's your answer.

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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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Metric

We only include several basic units here for you to convert historical units to contemporary ones. A more comprehensive list of metric units is available on the main area conversion page.
acre to square kilometer (km²)
acre to hectare
acre to square meter (m²)
acre to square centimeter (cm²)
acre to square millimeter (mm²)
Units: square kilometer (km²)  / hectare  / square meter (m²)  / square centimeter (cm²)  / square millimeter (mm²)
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British (Imperial) And U.S. System

We only include several basic units here for you to convert historical units to contemporary ones. A more comprehensive list of British and U.S. units is available on the main area conversion page.
acre to square mile
acre to square yard (yd²)
acre to square foot (ft²)
acre to square inch (in²)
Units: square mile  /  / square yard (yd²)  / square foot (ft²)  / square inch (in²)
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Ancient Greek

acre to plethron (πλέθρον)
acre to aroura (ἄρουρα)
acre to hektos (ἕκτος)
acre to hēmiektos (ἡμίεκτος)
acre to dodecaorgion (δωδεκάωργον)
acre to decaorgion (δεκάωργον)
acre to akaina (ἄκαινα)
acre to hexapodēs or orgya (ἑξαπόδης, ὀργυιά)
acre to bema or diploum (βῆμα, ἀπλοῦν)
acre to pous (πούς), square foot
Units: plethron (πλέθρον)  / aroura (ἄρουρα)  / hektos (ἕκτος)  / hēmiektos (ἡμίεκτος)  / dodecaorgion (δωδεκάωργον)  / decaorgion (δεκάωργον)  / akaina (ἄκαινα)  / hexapodēs or orgya (ἑξαπόδης, ὀργυιά)  / bema or diploum (βῆμα, ἀπλοῦν)  / pous (πούς), square foot
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Ancient Roman

acre to salt
acre to century
acre to geredium
acre to uger
acre to square akt
acre to klima
acre to square akt (small)
acre to square decimpeda
acre to square ped (ordinary)
acre to square ped (legal)
Units: salt  / century  / geredium  / uger  / square akt  / klima  / square akt (small)  / square decimpeda  / square ped (ordinary)  / square ped (legal)
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Old French

There were many local variations; the following are Quebec and Paris definitions
acre to arpent
acre to royal square perche
acre to square toise
acre to square pied
acre to square pouce
Units: arpent  / royal square perche  / square toise  / square pied  / square pouce
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Old Spanish

These units are occasionally used today in some Latin America countries, as well as in southern U.S. states, e.g. in Texas.
acre to league (square)
acre to labor
acre to caballería
acre to yugada
acre to fanegada
acre to aranzada
acre to cuerda of Puerto Rico
acre to celemin
acre to cuartillo
acre to estadal cuadrado (square estadal)
acre to vara cuadrada (square vara)
acre to pie cuadrado (square pie)
Units: league (square)  / labor  / caballería  / yugada  / fanegada  / aranzada  / cuerda of Puerto Rico  / celemin  / cuartillo  / estadal cuadrado (square estadal)  / vara cuadrada (square vara)  / pie cuadrado (square pie)
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Old Portuguese

These units were used in Portugal, Brazil and other countries of the Portuguese Empire until the adoption of the metric system in 19th century.
acre to braça quadrada (square braça)
acre to vara quadrada (square vara)
acre to palmo quadrado (square palmo)
acre to polegada quadrada (square polegada)
Units: braça quadrada (square braça)  / vara quadrada (square vara)  / palmo quadrado (square palmo)  / polegada quadrada (square polegada)
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Old Russian

acre to desyatina (state)
acre to desyatina (farmery)
acre to square verst
acre to square arshin
acre to square foot
Units: desyatina (state)  / desyatina (farmery)  / square verst  / square arshin  / square foot

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