Convert Acre to Square Mile , British (Imperial) And U.S. System

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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acre
British (Imperial) And U.S. System
square mile
British (Imperial) And U.S. System

This page features online conversion from acre to square mile. These units belong to the same measurement system: British (Imperial) And U.S. System.

If you need to convert acre to another compatible unit, please pick the one you need on the page below. You can also switch to the converter for square mile to acre.

Other Units the Values Above Are Equal To

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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 acre
acre to square yard (yd²)
acre to square foot (ft²)
acre to square inch (in²)
Units: square mile  / acre  / 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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